Generic Requirements for Electronic
Equipment Cabinets
Telcordia Technologies Generic Requirements
GR-487-CORE
Issue 3, April 2009
Comments Requested (See Preface)
Telcordia Technologies, Inc. — Enterprise License Restrictions
This document is available only via an Enterprise License (EL), and can only be
shared among the EL purchasers of this document. Violators of the
EL agreement are subject to copyright infringement.
GR-487-CORE
Issue 3, April 2009
Copyright Page
Generic Requirements for Electronic Equipment Cabinets
Target audience: This document is intended for the use of manufacturers and end users of
Electronic Equipment and Broadband Cabinets.
This document completely replaces: GR-487-CORE, Issue 2, March 2000.
Technical contact:
Telcordia — GR-487-CORE
Ernie Gallo
Principal Consultant
One Telcordia Drive, Room 4D644
Piscataway, NJ 08854-4182
Phone: + 1.732.699.3312
E-mail: egallo@telcordia.com
To obtain copies of this document, contact your company’s document coordinator or your
Telcordia account manager, call + 1.732.699.5828 (Worldwide), or go to
telecom-info.telcordia.com. Visit us at telcordia.com.
Copyright © 1996-2009 Telcordia Technologies, Inc. All rights reserved.
For more information on the Telcordia Enterprise License (EL), go to
telecom-info.telcordia.com and select “Licensing Info.”
Trademark Acknowledgments
Telcordia is a registered trademark, NEBS is a trademark, and AXESS is a service mark of
Telcordia Technologies, Inc.
All other brand or product names are trademarks of their respective companies or organizations.
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Generic Requirements Notice of Disclaimer
Generic Requirements Notice of Disclaimer
This Generic Requirements document (GR) is published by Telcordia Technologies
to inform the industry of the Telcordia view of proposed generic requirements for
Electronic Equipment Cabinets. The generic requirements contained herein are
subject to review and change, and superseding generic requirements regarding this
subject may differ from those in this document. Telcordia reserves the right to revise
this document for any reason (consistent with applicable provisions of the
Telecommunications Act of 1996 and applicable FCC rules).
TELCORDIA AND THE OTHER PARTICIPANTS IDENTIFIED IN THE PREFACE
MAKE NO REPRESENTATION OR WARRANTY, EXPRESSED OR IMPLIED, WITH
RESPECT TO THE SUFFICIENCY, ACCURACY, OR UTILITY OF ANY
INFORMATION OR OPINION CONTAINED HEREIN.
TELCORDIA AND THE OTHER PARTICIPANTS EXPRESSLY ADVISE THAT ANY
USE OF OR RELIANCE UPON SAID INFORMATION OR OPINION IS AT THE RISK
OF THE USER AND THAT NEITHER TELCORDIA NOR ANY OTHER
PARTICIPANT SHALL BE LIABLE FOR ANY DAMAGE OR INJURY INCURRED BY
ANY PERSON ARISING OUT OF THE SUFFICIENCY, ACCURACY, OR UTILITY OF
ANY INFORMATION OR OPINION CONTAINED HEREIN.
LOCAL CONDITIONS MAY GIVE RISE TO A NEED FOR ADDITIONAL
PROFESSIONAL INVESTIGATIONS, MODIFICATIONS, OR SAFEGUARDS TO
MEET SITE, EQUIPMENT, ENVIRONMENTAL SAFETY, OR COMPANY-SPECIFIC
REQUIREMENTS. IN NO EVENT IS THIS INFORMATION INTENDED TO
REPLACE FEDERAL, STATE, LOCAL, PROVINCIAL, OR OTHER APPLICABLE
CODES, LAWS, OR REGULATIONS. SPECIFIC APPLICATIONS WILL CONTAIN
VARIABLES UNKNOWN TO OR BEYOND THE CONTROL OF TELCORDIA. AS A
RESULT, TELCORDIA CANNOT WARRANT THAT THE APPLICATION OF THIS
INFORMATION WILL PRODUCE THE TECHNICAL RESULT OR SAFETY
ORIGINALLY INTENDED.
This GR is not to be construed as a suggestion to anyone to modify or change any
product or service, nor does this GR represent any commitment by anyone,
including but not limited to Telcordia and the other participants in the development
of this Telcordia GR, to purchase, manufacture, or sell any product with the
described characteristics.
Readers are specifically advised that any entity may have needs, specifications, or
requirements different from the generic descriptions herein. Therefore, anyone
wishing to know any entity’s needs, specifications, or requirements should
communicate directly with that entity.
Nothing contained herein shall be construed as conferring by implication, estoppel,
or otherwise any license or right under any patent, whether or not the use of any
information herein necessarily employs an invention of any existing or later issued
patent.
TELCORDIA DOES NOT HEREBY RECOMMEND, APPROVE, CERTIFY,
WARRANT, GUARANTEE, OR ENDORSE ANY PRODUCTS, PROCESSES, OR
SERVICES, AND NOTHING CONTAINED HEREIN IS INTENDED OR SHOULD BE
UNDERSTOOD AS ANY SUCH RECOMMENDATION, APPROVAL,
CERTIFICATION, WARRANTY, GUARANTY, OR ENDORSEMENT TO ANYONE.
iii
Telcordia Technologies, Inc. — Enterprise License Restrictions. See restrictions on title page.
Generic Requirements Notice of Disclaimer
GR-487-CORE
Issue 3, April 2009
For general information about this or any other Telcordia documents, please
contact:
Telcordia Customer Service
One Telcordia Drive, Room 1B180
Piscataway, NJ 08854-4182
+ 1.732.699.5828 (Worldwide)
+ 1.732.336.2226 (FAX)
E-mail: document-info@telcordia.com
Web site: telecom-info.telcordia.com
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Telcordia Technologies, Inc. — Enterprise License Restrictions. See restrictions on title page.
Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Table of Contents
Table of Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
The Telcordia Technologies GR Process . . . . . . . . . . . . . . . . . . . . Preface–xi
About GR-487-CORE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface–xi
Submit Comments on This GR . . . . . . . . . . . . . . . . . . . . . . . . . Preface–xii
Telcordia Consulting and Testing Services . . . . . . . . . . . . . . . . . . Preface–xii
1 Introduction
1.1 Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
1.2 Target Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.3 Reasons for GR-487-CORE, Issue 3 . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.4 Reasons for GR-487-CORE, Issue 2 . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
1.5 Structure and Use of This Document . . . . . . . . . . . . . . . . . . . . . . . . 1–3
1.6 Products Covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
1.6.1 Landline Electronic Equipment Cabinets . . . . . . . . . . . . . . . . . . . 1–4
1.6.2 Wireless Cabinets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
1.6.3 Field Retrofit Cabinets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
1.6.4 Field Adjunct Cabinets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
1.6.5 Power Pedestals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
1.6.6 Smaller-Sized Cabinets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
1.7 Battery References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
1.8 Coordination With GR-3108-CORE, Generic Requirements for Network
Equipment in the Outside Plant . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
1.8.1 GR-3108-CORE Class References . . . . . . . . . . . . . . . . . . . . . . . 1–7
1.8.1.1 GR-3108 Class 1: Controlled Protected Environments . . . . . . . . 1–7
1.8.1.2 GR-3108 Class 2: Protected Environments . . . . . . . . . . . . . . . 1–8
1.8.1.3 GR-3108 Class 3: Protected Equipment in Severe Outside
Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–9
1.8.1.4 GR-3108 Class 4: Products in Unprotected Environment . . . . . . 1–10
1.9 Requirements Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–10
1.10 Requirement Labeling Conventions . . . . . . . . . . . . . . . . . . . . . . . 1–11
1.10.1 Numbering of Requirement and Related Objects . . . . . . . . . . . . . 1–11
1.10.2 Requirement, Conditional Requirement, and Objective Identification . 1–12
1.10.3 Requirement Conformance . . . . . . . . . . . . . . . . . . . . . . . . . 1–12
2 General Information
2.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
2.2 Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
2.3 Telecommunications Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
2.4 Test Environmental Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
2.4.1 Ambient Laboratory Conditions . . . . . . . . . . . . . . . . . . . . . . . . 2–2
2.4.2 Environmental Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
2.4.3 Thermal Soak Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
2.5 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
2.6 Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
2.7 Laboratory Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
2.8 Sample Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
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GR-487-CORE
Issue 3, April 2009
Table of Contents
2.9 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
3 Detailed Requirements
3.1 Product Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
3.2 Product Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
3.3 Safety and Reliability Considerations . . . . . . . . . . . . . . . . . . . . . . . . 3–1
3.3.1 Restriction of Hazardous Substances (RoHS) Compliance . . . . . . . . 3–3
3.3.2 Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3
3.3.3 Surface Temperature Requirements . . . . . . . . . . . . . . . . . . . . . 3–3
3.3.3.1 Test Conditions for Surface Temperature Measurements for
Cabinets/Enclosures Placed in a Class 4 Environment . . . . . . . . 3–5
3.4 Metallic Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.5 Polymeric and Other Non-Metallic Materials . . . . . . . . . . . . . . . . . . . 3–6
3.6 Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11
3.6.1 Color . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11
3.6.2 Appearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11
3.6.3 Paint Adhesion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–12
3.6.4 Flexibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–12
3.6.5 Paint Adhesion After Exposure . . . . . . . . . . . . . . . . . . . . . . . 3–12
3.6.6 Ultraviolet Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13
3.7 Screens and Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13
3.8 Insect Intrusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–14
3.9 Door Restrainers (Vertically Hinged Doors) . . . . . . . . . . . . . . . . . . . 3–16
3.10 Wall-Mounted Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–19
3.11 Horizontally Hinged Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–19
3.12 Lifting Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–21
3.13 Roof Compression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–21
3.14 External Icing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–24
3.15 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–24
3.16 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–25
3.16.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–25
3.16.2 Engine Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–27
3.17 Condensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–27
3.18 Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–28
3.19 Bonding and Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–28
3.20 AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–29
3.20.1 Commercial Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–30
3.20.2 Auxiliary Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–31
3.21 Splicing Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–32
3.22 Electronic Equipment Compartment . . . . . . . . . . . . . . . . . . . . . . 3–33
3.23 Battery Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–34
3.24 Engine-Generator Compartment . . . . . . . . . . . . . . . . . . . . . . . . . 3–36
3.25 Pole-Mounted Aerial Cabinets . . . . . . . . . . . . . . . . . . . . . . . . . . 3–37
3.26 Marking, Packaging, and Shipping . . . . . . . . . . . . . . . . . . . . . . . . 3–38
3.27 Installation and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 3–40
3.28 Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–42
3.29 Exposure to High Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 3–42
3.30 Thermal Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–51
3.31 Water and Dust Intrusion, and Water Resistance . . . . . . . . . . . . . . . 3–54
3.31.1 Wind-Driven Rain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–54
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Table of Contents
3.31.2 Rain Intrusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.31.3 Water Intrusion for Below-Grade Cabinets . . . . . . . . . . . . . . . .
3.31.4 Water Intrusion Flood-Prone Areas . . . . . . . . . . . . . . . . . . . .
3.31.5 Lawn Sprinklers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.31.6 Weathertightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.32 Acoustical Noise Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.33 Conditional Noise Requirements . . . . . . . . . . . . . . . . . . . . . . . . .
3.34 Wind Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.35 Impact Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.36 Firearms Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.37 Fire Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.38 Corrosion Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.38.1 Salt Fog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.38.2 Temperature Cycling/High Humidity . . . . . . . . . . . . . . . . . . .
3.39 Shock and Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.39.1 Transportation Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.39.2 Transportation Shock (Rail) . . . . . . . . . . . . . . . . . . . . . . . .
3.39.3 Transportation Vibration— Packaged Environment . . . . . . . . . . .
3.39.4 Installation Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.39.5 Environmentally Induced Vibration . . . . . . . . . . . . . . . . . . . .
3.39.6 Earthquake Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–55
3–56
3–56
3–57
3–57
3–58
3–60
3–60
3–65
3–65
3–66
3–68
3–68
3–69
3–71
3–71
3–71
3–71
3–72
3–72
3–73
Appendix A: Evaluating Dust Accumulation and Wind-Driven Rain Test
A.1 Observational Standard for Evaluating Dust Accumulation . . . . . . . . . . . A–1
A.2 Wind-Driven Rain Test Set-Up Calibration Suggested Procedure . . . . . . . . A–2
A.2.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A–2
A.2.2 Test Set Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A–2
Appendix B: References
B.1 Non-Telcordia Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–2
B.2 Reference Note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–4
B.3 Contact Telcordia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–5
B.4 Order Documents Online From the Telcordia Information SuperStore . . . . . B–5
B.5 Telcordia Web Sites for Generic Requirements Information . . . . . . . . . . . B–6
B.6 Telcordia Licensing Agreements . . . . . . . . . . . . . . . . . . . . . . . . . . B–6
Appendix C: Acronyms
Appendix D: OSP Cabinet Retrofit/Augment Guidelines
D.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1
D.2 Basic Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1
D.3 Retrofit Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1
D.3.1 Physical Space – Parameter 1 . . . . . . . . . . . . . . . . . . . . . . . . . D–2
D.3.2 DC Power – Parameter 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–2
D.3.3 Power/Battery Reserve – Parameter 3 . . . . . . . . . . . . . . . . . . . . D–3
D.3.4 AC Power – Parameter 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–3
D.3.5 Thermal Capacity – Parameter 5 . . . . . . . . . . . . . . . . . . . . . . . D–4
D.3.6 Signal/Transmission Capacity – Parameter 6 . . . . . . . . . . . . . . . . D–5
D.3.7 Electromagnetic Interference (EMI) – Parameter 7 . . . . . . . . . . . . . D–5
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GR-487-CORE
Issue 3, April 2009
Table of Contents
D.3.8 Bonding and Grounding Safety – Parameter 8 . . . . . . . . . . . . . . . D–5
D.3.9 Acoustic Noise - Parameter 9 . . . . . . . . . . . . . . . . . . . . . . . . . D–6
D.4 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–6
D.5 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–6
Requirement-Object Index
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
List of Figures
List of Figures
Figure 3-1
Figure 3-2
Figure 3-3
Figure 3-4
Figure 3-5
Figure 3-6
Figure 3-7
Figure 3-8
Figure 3-9
Figure A-1
Figure A-2
Figure A-3
Three-Point Test Fixture . . . . . . . . . . . . . . . . . . . . . . . . . 3–8
Insect Intrusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–15
Dynamic Wind Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–18
Roof Compression . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–23
Temperature Cycle — Thermal Shock . . . . . . . . . . . . . . . . 3–53
Acoustic Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–59
Application of Force to Pole-Mounted Cabinet . . . . . . . . . . . 3–62
Overturning Moment Applied to Pad-Mounted Cabinet . . . . . . . 3–64
Temperature Cycle — Temperature Cycling/High Humidity . . . . 3–70
Observational Standard . . . . . . . . . . . . . . . . . . . . . . . . . A–1
Wind Speed and Rainfall Verification Fixture . . . . . . . . . . . . . A–3
Reduction of Water Collection Aperture With an Inclined Rain
Gauge During Wind-Driven Rain Testing . . . . . . . . . . . . . . . . A–4
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List of Tables
GR-487-CORE
Issue 3, April 2009
List of Tables
Table 1-1
Table 3-1
Table 3-2
Table 3-3
Table 3-4
Table 3-5
Detailed Summary of Criteria . . . . . . . . . . . . . . . . . . . . . 1–13
Limits for Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4
Ultraviolet Resistance Sources . . . . . . . . . . . . . . . . . . . . 3–10
Ultraviolet Resistance Sources . . . . . . . . . . . . . . . . . . . . 3–13
Solar Load Categories . . . . . . . . . . . . . . . . . . . . . . . . . 3–44
Spectral Distribution of Solar Simulator . . . . . . . . . . . . . . . 3–48
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Preface
Preface
The Telcordia Technologies GR Process
Generic Requirements documents (GRs) provide the Telcordia view of proposed
generic criteria for telecommunications equipment, systems, or services, and
involve a wide variety of factors, including interoperability, network integrity, the
expressed needs of industry members who have paid a fee to participate in the
development of specific GRs, and other input. For more information, visit the
Generic Requirements Overview web site.
The Telcordia GR process implements Telecommunications Act of 1996 directives
relative to the development of industry-wide generic requirements relating to
telecommunications equipment, including integral software and customer premises
equipment. Pursuant to that Act, Telcordia invites members of the industry to
participate in the development of GRs. Invitations to participate and the
participation fees are published online.
At the conclusion of the GR development process, Telcordia publishes the GR,
which is available for license. The license fee entitles the licensee to receive that
issue of the GR (GR-CORE) along with any Issues List Report (GR-ILR) and
revisions, if any are released under that GR project. ILRs contain any technical
issues that arise during GR development that Telcordia and the other participants
would like further industry interaction on. The ILR may present issues for
discussion, with or without proposed resolutions, and may describe proposed
resolutions that lead to changes to the GR. Significant changes or additional material
may be released as a revision to the GR-CORE.
Telcordia may also solicit general industry nonproprietary input regarding such GR
material at the time of its publication, or through a special Industry Interaction
Notice appearing on the web site What’s New, which has replaced the Digest.
While unsolicited comments are welcome, any subsequent work by Telcordia
regarding such comments will depend on participation in such GR work. Telcordia
will acknowledge receipt of comments and will provide a status to the submitting
company.
About GR-487-CORE
Participants in the Development of GR-487-CORE, Issue 3:
• 3M
• Adtran
• Alcatel/Lucent
• AT&T
• Commscope
• Emerson Network Power
• Ericsson
• Fujitsu Network Communications
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GR-487-CORE
Issue 3, April 2009
Preface
• Huawei
• Nortel
• Purcell
• Telcordia
• Tellabs
• Underwriters Laboratories.
Participants in the Development of GR-487-CORE, Issue 2:
• Anacapa Technology
• BellSouth Telecommunications
• Fujitsu Network Communications
• Lucent Technologies
• Marconi Communications
• Telcordia
• U S WEST.
Relative Maturity Level
This is a mature technology and requirements reflect maintenance mode.
GR-487-CORE Plans
GR-487-CORE will be reissued as warranted by industry.
Submit Comments on This GR
Telcordia welcomes your comments on this GR. When submitting your comments,
please include the GR document number, and cite any pertinent section and
requirement number. If you are responding to an ILR, identify the pertinent Issue ID
number. Please provide the name and e-mail address of the contact person in your
company for further discussion.
Telcordia Consulting and Testing Services
Telcordia is uniquely positioned to provide in-depth, expert consulting regarding
this GR, including knowledge of how these generic requirements are used by
telecommunication carriers in selecting products to meet their deployment needs.
Telcordia also offers a comprehensive and independent laboratory testing service
that helps manufacturers develop and qualify new products and bring those
products to market in a timely and cost-effective manner.
To submit comments on this GR, or to obtain further information regarding
Telcordia Consulting and Testing Services, please contact:
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Preface
Telcordia — GR-487-CORE
Ernie Gallo
Principal Consultant
One Telcordia Drive, Room 4D644
Piscataway, NJ 08854-4182
Phone: + 1.732.699.3312
E-mail: egallo@telcordia.com
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Preface
GR-487-CORE
Issue 3, April 2009
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Introduction
1 Introduction
1.1 Purpose and Scope
This Generic Requirements document (GR) outlines the Telcordia view of generic
requirements for telecommunications equipment enclosures and cabinets. The
Telcordia view represents the expressed needs and interests of the funding
companies of the Telcordia Technical Forum (TTF) members for this GR (see the
Preface), and may meet the needs of other telecommunications service providers,
equipment manufacturers, and integrators.
The stated generic requirements are intended to provide a suitable environment for
telecommunication companies’ electronic and passive equipment that is housed in
above ground cabinets or enclosures, typically pad- or pole-mounted, in an Outside
Plant (OSP) environment (see Section 1.8.1 for definitions and descriptions of
environmental classes from GR-3108-CORE,[25] Generic Requirements for Network
Equipment in the Outside Plant (OSP); and ATIS-0600010.01[61]). GR-3108-CORE
provides the criteria for the equipment inside of a cabinet or enclosure, and is
intended to work in harmony with GR-487-CORE, which provides the enclosure
criteria. Equipment evaluated to GR-3108-CORE expects GR-487-CORE to provide
the applicable Class 2 or Class 3 environment. Cabinets and enclosures evaluated to
GR-487-CORE are anticipated to be deployed in a Class 4 environment. The
equipment housed in cabinets is typically accessible to the craftsperson through
doors. Other types of smaller enclosures may only have access panels, lids, or
compartment covers. This document does not cover large cabinets such as huts and
Controlled Environmental Vaults (CEVs) that can be entered by the craftsperson.
The terms “cabinets” and “enclosures” are generally used synonymously throughout
this document. Many of criteria in this GR are based on traditional cabinets, and may
not be applicable or appropriate for other types of enclosures (or may need to be
adapted). The applicability of criteria to other types of enclosures will need to be
determined on a case-by-case basis, but need to be consistent with the intent of this
document, which is to protect the equipment contained in the enclosure from the
Class 4 (outdoor) environment. If a cabinet or enclosure includes electronic or
telecommunication equipment, this equipment is expected to comply with the
criteria contained in GR-3108-CORE, unless equipment such as Optical Network
Units (ONUs), pedestals, and Building Entrance Terminals (BETs) are explicitly
covered by a more specific GR as described below. GR-3108-CORE defers most
enclosure criteria to GR-487-CORE. In some cases, customers may require some
additional criteria for specific applications based on equipment needs. For instance,
submersion or hand-hole criteria may be necessary and those necessary criteria
should be chosen from another relevant GR or industry standard.
In general, GR-487-CORE and these documents take precedence over other
documents that may indicate requirements for cabinets and enclosures deployed in
the OSP environment. Similarly, GR-63-CORE,[4] NEBSTM Requirements: Physical
Protection, defines requirements for equipment used within the Central Office (CO)
environment, which includes CEVs and huts. The following documents complement
the information in this document:
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GR-487-CORE
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Introduction
• GR-13-CORE,[1] Generic Requirements for Pedestal Terminal Closures,
outlines the requirements for partially buried closures that provide access to
telecommunications distribution points.
• GR-26-CORE,[2] Generic Requirements for Controlled Environment Vaults
(CEVs), outlines the requirements for below ground structures that utilize an air
conditioning system to provide a suitable environment for equipment and the
craftsperson.
• GR-43-CORE,[3] Generic Requirements for Telecommunications Huts, outlines
the requirements for above ground buildings that utilize an air conditioning
system to provide a suitable environment for equipment and the craftsperson.
• GR-937-CORE,[13] Generic Requirements for Building Entrance Terminals
(BETs), outlines the requirements for Outdoor Building Entrance Terminals and
Indoor Building Entrance Terminals equipped with protector units.
• GR-950-CORE,[14] Generic Requirements for Optical Network Unit (ONU)
Closures, outlines the requirements for closures containing the optical-metallic
interface at the customer end of a Fiber-in-the-Loop system.
• GR-2832-CORE,[21] Generic Requirements for Walk-In Cabinets, outlines the
requirements for partially buried cabinets that utilize an air conditioning system
for equipment cooling and can be entered by the craftsperson.
• GR-3108-CORE,[25] Generic Requirements for Network Equipment in the
Outside Plant (OSP), outlines the requirements for network electronic
equipment that is intended to be installed in the OSP.
• GR-3115-CORE,[26] Generic Requirements for Copper Cross-Connect Cabinets,
outlines the requirements for copper cross-connect cabinets. These are
sometimes referred to as serving area terminals or SAC boxes.
• GR-3125-CORE,[27] Generic Requirements for Outdoor Fiber Distribution
Hubs (FDHs), outlines the requirements for passive optical fiber FDHs.
• GR-3142-CORE,[28] Generic Requirements for Intelligent Network Interface
Devices (iNIDs), outlines requirements for active NIDs that provide voice, data,
and video services.
1.2 Target Audience
This document is intended for the use of manufacturers and end users of cabinets
and enclosures used to house electronic or telecommunications equipment that will
be utilized in a Class 4 OSP environment (see Section 1.8.1).
1.3 Reasons for GR-487-CORE, Issue 3
The following changes in Issue 3 include, but are not limited to:
• A new format and reorganization of GR-487-CORE based on seven years of
testing experience with Issue 2 of this document.
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Introduction
• Harmonization of GR-487-CORE with other industry standards (e.g., ISO, ATIS,
and UL standards), and with recent updates to related Telcordia documents
including GR-3108-CORE,[25] GR-63-CORE,[4] and GR-1089-CORE.[17]
• Revisions to accommodate emerging telecommunications technologies and
changing network applications that have altered the needs of users (i.e.,
telecommunication service providers, equipment manufacturers, and system
integrators).
• Revisions to the reporting requirements to include more specific thermal
dissipation information, operational acoustic levels, and test report data.
• Additional guidance information on requirements for integrated products
(equipment plus closure) with specific requirements defined for associated
closures.
• Appendix D, which is a new addendum to this document, contains Outside Plant
(OSP) cabinet retrofit/augment guidelines.
Due to the extensive modifications, additions, rearrangements, and re-numbering of
the requirements, the changes were not highlighted by change bars in the margins.
The new requirements for this re-issue begin at absolute number [224].
GR-487-CORE, Issue 3, completely replaces Issue 2.
1.4 Reasons for GR-487-CORE, Issue 2
Issue 2 was published to clarify the stated requirements and related test procedures,
and to incorporate broadband cabinet requirements into a single document. For
present purposes, broadband equipment is considered to be capable of providing
subscriber services at very high frequencies or bit rates (e.g., greater than
DS3/45 Mbs), typically delivered over coaxial or fiber media. The broadband cabinet
document, GR-2927-CORE, was replaced by GR-487-CORE, Issue 2. Thus,
Issue 2 included additional requirements for the splicing compartment, which may
serve coaxial or fiber media, as well as requirements for a permanent engine
generator. Requirements related to touch temperature, wind loads, and temperature
extremes are examples of other areas that were significantly modified or expanded.
1.5 Structure and Use of This Document
This document is organized as follows:
• Section 1 outlines the purpose, scope, target audience, structure, reason for
reissue, and terminology.
• Section 2 provides product description and application information.
• Section 3 outlines features, functions, and performance requirements, and
related test procedures.
• Appendix A, “Evaluating Dust Accumulation and Wind-Driven Rain Test.”
• Appendix B, “References.”
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Introduction
• Appendix C, “Acronyms.”
• Appendix D, “OSP Cabinet Retrofit/Augment Guidelines.”
This document should be used in conjunction with telecommunications equipment
and broadband systems specification. The systems specification should detail the
identification and location of all housed components and the requirements for those
components as they relate to the cabinet in which they are to be housed.
1.6 Products Covered
GR-487-CORE covers cabinets and enclosures deployed in the Outside Plant (OSP)
Class 4 environment. The following applications are described in Section 1.6.1
through Section 1.6.6.
• Landline Electronic Equipment Cabinets
• Wireless Cabinets
• Field Retrofit Cabinets
• Field Adjunct Cabinets
• Power Pedestals
• Smaller Cabinets.
1.6.1 Landline Electronic Equipment Cabinets
These may be used for landline telephony service. They may use Digital Loop Carrier
(DLC) or Digital Subscriber Line Access Multiplexer (DSLAM) technology, may be
fiber fed from the service provider side and provide xDSL or Ethernet to customers,
or even provide fiber to the customer. The cabinets may also contain only passive
components or fiber. As new technologies develop, other applications will emerge
that will provide landline service to customers.
1.6.2 Wireless Cabinets
Cabinets used in the wireless industry are similar to those used in landline telephony
service. They may or may not be intended for use with backup batteries, and
normally are not intended for use with backup generators. When conducting an
analysis of a wireless cabinet, the applicable GR-487-CORE requirements shall apply
in the same manner as landline cabinets.
1.6.3 Field Retrofit Cabinets
A field retrofit cabinet is a cabinet that is already installed in the field and is being
modified to incorporate new electronics or passive equipment. The GR-487-CORE
requirements are recommended to review a field retrofit cabinet. Any testing for a
field retrofit cabinet must be representative of actual field installation including not
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Introduction
only the new equipment, but the equipment that would already be installed in the
cabinet. Additional information can be found in Appendix D of this GR.
1.6.4 Field Adjunct Cabinets
A field adjunct cabinet is a cabinet that is placed next to or is incorporated as part
of an existing host cabinet. The adjunct cabinet may be placed to house new
electronics, cross connections, or expand the capacity of a cabinet already installed
in the field. Any testing for a field adjunct cabinet must be representative of the
actual field installation. An engineering assessment shall be performed to ascertain
that the installation of the adjunct cabinet does not degrade the performance of the
parent cabinet.
1.6.5 Power Pedestals
Power pedestals provide a separate housing for AC commercial power used by
telecommunications electronic equipment cabinets. They are normally provided
with a service meter, circuit breaker, transfer switch, and a plug for connection to
remote power. Sometimes they are referred to as a “juice box.” The requirements for
power pedestals are to be listed per UL 67[75] and UL 891,[78] as appropriate.
1.6.6 Smaller-Sized Cabinets
Smaller-sized cabinets are covered in GR-487-CORE, and different requirements
apply to these products versus the larger products. For use in GR-487-CORE, a
smaller cabinet is defined as a cabinet less than 8 cubic feet.
1.7 Battery References
GR-487-CORE covers electronic equipment cabinets. One of the main elements in
these cabinets are the backup batteries provided.
Below are documents pertaining to batteries, which are most likely to be deployed
in GR-487-CORE cabinets.
• GR-1200-CORE,[18] Generic Requirements for Accelerated Life Testing of Valve
Regulated Lead Acid Batteries at High Temperatures.
• GR-1515-CORE,[19] Generic Requirements for the Detection and Control of
Thermal Runaway in VRLA Batteries.
• GR-3020-CORE,[24] Nickel Cadmium Batteries in the Outside Plant.
• GR-3150-CORE,[29] Generic Requirements for Secondary Non-Aqueous
Lithium Batteries.
• SR-4228,[30] VRLA Battery String Certification Levels Based on Requirements
for Safety and Performance.
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Introduction
• GR-232-CORE,[7] Generic Requirements for Lead-Acid Storage Batteries. (This
GR pertains to CO batteries.)
• GR-513-CORE,[10] LSSGR: Power, Section 13. This is a generic power document
that cross references the above GRs; it is scheduled for a reissue.
1.8 Coordination With GR-3108-CORE, Generic Requirements for Network
Equipment in the Outside Plant
GR-3108-CORE[25] outlines the Telcordia view of generic requirements for network
equipment that is intended to be installed in Class 2 and 3 environments. GR-487CORE cabinets and enclosures are intended to provide these types of environments
for the equipment they contain. GR-487-CORE covers the OSP cabinet or enclosure
whereas GR-3108-CORE covers the associated electronics and equipment located
inside the enclosure. There is a symbionic relationship between these two GRs, and
they are intended to complement each other. There is not any intention to have
mutually exclusive criteria. If criteria between the two documents conflict, the best
engineering judgment should be used to meet the intent.
One can evaluate the cabinet electronics or equipment as part of a GR-487 analysis
or a GR-3108 analysis. However, if the electronics or internal equipment are
evaluated using GR-487-CORE, those results may not be acceptable if they are
placed in other cabinets or enclosures. In addition, GR-3108-CORE has additional
criteria that must be addressed to ensure proper functionality and design of that
equipment. For example, GR-487-CORE does not contain an Operational
Temperature and Humidity Cycling test to ensure the equipment functions properly
at extreme temperatures and humidities over time. As a result, the documents are
intended to be used together. It is suggested that during the initial evaluation of a
cabinet and any of its associated electronics and equipment, that a GR-487 test
program be conducted on the cabinet with its known associated electronics
installed. If a cabinet does not need physical design changes to enable the
replacement of existing electronics or addition of new electronics, then only a GR3108 analysis of the equipment is required. If a GR-487 test program is used to review
both the cabinet and electronics, appropriate requirements from GR-3108-CORE
should be included in the test program.
GR-3108-CORE[25] also addresses equipment that has an integral enclosure (where
the equipment inside is always the same or is always known). This type of equipment
is evaluated to GR-3108-CORE, environment Class 4. In addition, GR-3108-CORE,
Section 7, “Closure Requirements for Integrated Products,” refers most of the
applicable enclosure criteria to GR-487-CORE, so a test plan utilizing GR-3108CORE and GR-487-CORE is necessary. Other criteria that may be necessary for
certain applications should be utilized from other relevant GRs or industry
standards as needed. In general, a combination of GR-3108-CORE and GR-487-CORE
is sufficient for this type of equipment.
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Introduction
1.8.1 GR-3108-CORE Class References
As noted above, GR-487-CORE covers electronic equipment cabinets and
GR-3108-CORE[25] covers equipment. These two documents are intended to work
together. A key element of GR-3108-CORE is the equipment classifications. Key
aspects include:
• The equipment space within a GR-487 cabinet should generally be considered a
Class 2 environment as far as GR-3108 is concerned.
• Battery or engine compartments should generally be considered Class 3
environments, as far as GR-3108 is concerned, with a caveat that such
compartments can be considered Class 2 if engineering analysis or field data are
provided to show that the temperature is maintained within the Class 2
boundaries at all times.
Temperature ranges shall be dictated by the battery technology (see
Section 1.7).
1.8.1.1 GR-3108 Class 1: Controlled Protected Environments
Class 1 environments are “controlled” protected environments where the equipment
space is protected from direct outside weather and environmental stresses by a
building or structure. The climate is controlled between -5°C (23°F) and 50°C
(122°F) and these locations usually have active means of controlling the
temperature inside its envelope within a preset temperature range. The control may
be achieved through thermostat-controlled fans, refrigeration units, heat
exchangers, coolers, or heaters. A telecommunications hut or controlled
environmental vault are Class 1 locations.
The Class 1 environments defined in GR-3108-CORE and ATIS-0600010,[60] are
considered equivalent. In ATIS-0600010, Class 1 is defined as “Controlled Protected Environment - Network Equipment Facilities” and described as follows.
An environment where the electronics (shelf/cards, etc.) are protected from direct
exposure to the OSP environment by a building/structure. Environmental
conditions such as the controlled-temperature/humidity, vibration, EMC,
lightning, etc., are expected to stress equipment in a Class 1 environment.
Examples of equipment systems which might be exposed to Class 1 environments
are switches, rectifiers, batteries, DLCs, DSLAMs, routers, equipment shelves,
printed circuit cards and other similar types of equipment that are intended to be
placed inside COs, huts, CEVs, interior of actively controlled outside frames/
cabinets, and some residential and business customer locations that provide a
moderate level of protection from the elements.
Requirements for Class 1 are outside the scope of this ATIS thermal standard;
however, they are covered in other related standards or industry documents
(including other ATIS standards, Telcordia GR-63-CORE and GR-3108-CORE).
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Issue 3, April 2009
Introduction
From a thermal and humidity perspective, Class 1 equipment is exposed to a
moderate range of temperature and humidity conditions that are controlled, such
that the ambient temperature and humidity around the electronics is maintained
within the Class 1 limits.
Class 1 is not used in GR-487-CORE; it is provided for informational purpose only.
1.8.1.2 GR-3108 Class 2: Protected Environments
Class 2 environments are spaces protected from direct outside weather and
environmental stresses by a closure and where the operating climate is between
-40°C (-40°F) and 65°C (149°F). These locations usually have either
(a) an active means of cooling using fans and/or heat exchangers, or
(b) design features (cooling fins or airflow pattern) within the closure or the
equipment to effectively dissipate heat from active equipment.
Although these facilities do not have a preset specific temperature range as a target,
their physical design features (e.g., cooling fins) and devices (e.g., fans, heat
exchangers) greatly aid heat dissipation and help moderate the thermal environment
surrounding the electronic equipment. Examples of network locations where Class
2 environments are usually maintained include the interior spaces within outdoor
(OSP) cabinets designed to meet GR-487.
In ATIS-0600010.01,[61] Class 2 is defined as “Harsh Protected Environment” and
described as follows. An environment where the electronics (shelf/cards, etc.) are
protected from direct exposure to the OSP environment by a cabinet/enclosure.
Environmental conditions such as partially controlled temperature, humidity,
salt fog, vibration, EMC, lightning, etc., are expected to stress equipment in a
Class 2 environment. Examples of equipment systems which might be exposed to
Class 2 environments are rectifiers, batteries,1 DLCs, DSLAMs, routers,
equipment shelves, printed circuit cards, or similar types of equipment that are
intended to be placed inside an OSP enclosure that provides protection from the
elements.
Specific design criteria are necessary for this type of environment. Requirements
other than thermal and humidity are outside the scope of this ATIS thermal
standard. However, these other requirements are covered in other related
standards or industry documents (such as ATIS standards, and Telcordia
GR-3108-CORE).
From a thermal and humidity perspective, Class 2 environments may expose the
electronics to a wide range of temperature and humidity conditions that are
controlled in some manner, such that the ambient temperature and humidity
around the electronics is maintained within the Class 2 limits as specified in this
1. Currently, the large majority of batteries in telecommunications networks are placed in
separate compartments as per GR-487 to prevent outgas products (e.g., hydrogen, electrolytes)
from the batteries damaging electronics. In the future, different battery technologies may
permit safe co-location of batteries and electronics. In the interim, most batteries will be found
in separate compartments with uncontrolled environments or no active cooling devices and
would usually be classified as Class 3 environments.
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Introduction
standard. The Class 2 environment is the normal OSP environment that service
providers try to maintain for electronics inside an enclosure. These limits are
based on those defined in this GR document.
1.8.1.3 GR-3108 Class 3: Protected Equipment in Severe Outside Environments
Class 3 environments are generally for equipment spaces protected from direct
sunlight and rain exposure by closures that may not be sealed. Equipment located in
Class 3 environments may be exposed to outside hot air, humid atmosphere, and
particulate contamination through ventilation openings, drain holes, and cable
access ports. The closures associated with these environments do not usually have
active cooling devices such as fans and heat exchangers although they may include
cooling fins and vent holes. A Class 3 thermal environment could also exist in
conventional OSP cabinets that provide protection and active cooling, but cannot
maintain an upper thermal limit of +65°C. Within Class 3 environments, the ambient
conditions around the equipment could be between -40°C (-40°F) and 70°C (158°F).
Examples of network locations where Class 3 environments are maintained include,
but are not limited to, pedestals, distribution cross boxes, and some interior spaces
(battery and engine compartments) within outdoor cabinets operating in desert
climates.
In ATIS-0600010.01,[61] Class 3 is defined as “Extreme Protected Environment”
and described as follows. An environment where the electronics (shelf/cards, etc.)
or enclosed equipment are protected from direct exposure to the OSP environment
by a cabinet/enclosure. Environmental conditions such as partially or
uncontrolled temperature, humidity, salt fog, vibration, EMC, lightning, etc., are
expected to stress equipment in a Class 3 environment. Examples of equipment
that are likely to be located in a Class 3 Environment are similar to Class 2, but
may also include an enclosure.2 Generally there are no active thermal controls. It
is possible that some type of thermal regulation (active or passive) exists, but is
insufficient to maintain the Class 2 thermal environmental limits. However, they
are expected to remain within the Class 3 limits as specified in this standard.
From a thermal and humidity perspective, the Class 3 Environment is protected
from direct precipitation, but depicts an environment that was not originally
intended to protect active electronics. As such, high humidity and condensing
moisture may occur in this environment. ATIS Class 3 Environments are
considered extreme and thus only applicable in special applications where these
extreme temperature and humidity limits are deemed necessary by the service
provider. The Class 3 limits are beyond those defined in this GR document.
2. This example covers the application where a product initially designed with an integral closure
for direct outside exposure to sun and weather is deployed inside a second closure for network
security, plant maintenance or other convenience reasons. For testing purposes, such a
product would be treated as residing in a Class 3 environment unless otherwise designated by
the user.
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1.8.1.4 GR-3108 Class 4: Products in Unprotected Environment
The products for this environment are integrated products consisting of equipment
and closure. Class 4 environments are those where the integrated equipment
product is directly exposed to outside weather conditions of sunlight, rain, wind,
and other climatic stresses. Products designed for placement in Class 4
environments are envisioned to have the electronics equipment integrated within a
weather-protective closure as a single product offering. Class 4 environments are
those where the product is exposed to the outside weather conditions that are
expected to range between -40°C (-40°F) and 46°C (115°F), plus solar radiation.
In ATIS-0600010.01,[61] Class 4 is defined as “Unprotected Environment” and is
described as follows. An environment where the equipment (electronics and
cabinet/enclosure as a system) is directly exposed to the OSP environment and all
of its associated elements. Environmental conditions such as uncontrolled
temperature, humidity, rain, salt fog, fungus, vibration, EMC, lightning, etc., are
expected to stress equipment in a Class 4 Environment. Examples of equipment
systems which might be exposed to Class 4 environments are repeater housings,
apparatus cases, OSP DSLAMs, cabinets, NEMA enclosures, pedestals, iNIDs,
NIDs, or similar types of exposed equipment that includes the electronics and a
known or integral enclosure that provides the protection from the elements.
Specific design criteria are necessary for this type of environment. Requirements
other than thermal and humidity are outside the scope of this ATIS thermal
standard and are covered in other related standards or industry documents (such
as other ATIS standards, and Telcordia GR-3108-CORE).
From a thermal and humidity perspective, Class 4 Environments may expose the
equipment to a wide range of temperature and humidity conditions that are
uncontrolled, and as a result the ambient temperature and humidity surrounding
the equipment is expected to be within the Class 4 limits as specified in the
ATIS-0600010.01[61] standard.
This definition is based on GR-3108-CORE, where the electronics are integrated into
the enclosure. GR -487-CORE addresses cabinets and enclosures, and may not know
what the electronics inside the cabinets may ultimately be. However, the Class 4
environment is the same for both GR-487-CORE and GR-3108-CORE.
1.9 Requirements Terminology
The following requirements terminology is used throughout this document:
• Requirement — Feature or function that, in the view of Telcordia, is necessary
to satisfy the needs of a typical client company. Failure to meet a requirement
may cause application restrictions, result in improper functioning of the
product, or hinder operations. A Requirement contains the words shall or must
and is flagged by the letter “R.”
• Conditional Requirement — Feature or function that, in the view of Telcordia,
is necessary in specific applications. If a client company identifies a
Conditional Requirement as necessary, it shall be treated as a requirement for
the application(s). Conditions that may cause the Conditional Requirement to
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apply include, but are not limited to, certain client companies’ application
environments, elements, or other requirements, etc. A Conditional Requirement
is flagged by the letters “CR.”
• Objective — Feature or function that, in the view of Telcordia, is desirable and
may be required by a client company. An Objective represents a goal to be
achieved. An Objective may be reclassified as a Requirement at a specified date.
An objective is flagged by the letter “O” and includes the words it is desirable or
it is an objective.
• Conditional Objective — Feature or function that, in the view of Telcordia, is
desirable in specific applications and may be required by a client company. It
represents a goal to be achieved in the specified Condition(s). If a client
company identifies a Conditional Objective as necessary, it shall be treated as a
requirement for the application(s). A Conditional Objective is flagged by the
letters “CO.”
• Condition — The circumstances that, in the view of Telcordia, will cause a
Conditional Requirement or Conditional Objective to apply. A Condition is
flagged by the letters “Cn.”
1.10 Requirement Labeling Conventions
As part of the Telcordia GR Process, proposed requirements and objectives are
labeled using conventions that are explained in the following two sections.
1.10.1 Numbering of Requirement and Related Objects
Each Requirement, Objective, Condition, Conditional Requirement, and Conditional
Objective object is identified by both a local and an absolute number. The local
number consists of the object’s document section number and its sequence number
in the section (e.g., R3-1 is the first Requirement in Section 3). The local number
appears in the margin to the left of the Requirement. A Requirement object’s local
number may change in subsequent issues of a document if other Requirements are
added to the section or deleted.
The absolute number is a permanently assigned number that will remain for the life
of the Requirement; it will not change with new issues of the document. The
absolute number is presented in brackets (e.g., [2]) at the beginning of the
requirement text.
Neither the local nor the absolute number of a Conditional Requirement or
Conditional Objective depends on the number of the related Condition(s). If there is
any ambiguity about which Conditions apply, the specific Condition(s) will be
referred to by number in the text of the Conditional Requirement or Conditional
Objective.
References to Requirements, Objectives, or Conditions published in other Generic
Requirements documents will include both the document number and the
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GR-487-CORE
Issue 3, April 2009
Introduction
Requirement object’s absolute number. For example, R2345-12 refers to
Requirement [12] in GR-2345-CORE.
1.10.2 Requirement, Conditional Requirement, and Objective Identification
A Requirement object may have numerous elements (paragraphs, lists, tables,
equations, etc.). To aid the reader in identifying each part of the requirement,
horizontal rules are used above and below requirement content.
1.10.3 Requirement Conformance
To better understand how conformance to a requirement within this GR is
determined, the following definitions are provided:
• Verify — Verify by a review of the documentation that the information or
accessories specified by the criteria were supplied or are available from the
manufacturer.
• Analyze — Draw conclusions based on vendor-supplied product information,
test data, and other information as to the conformance or nonconformance of
the product to the criteria.
• Inspect — Visually inspect the product to determine conformance or
nonconformance to the criteria.
• Test — Measure quantitatively product features or performance to determine
conformance or nonconformance to the criteria.
Table 1-1 provides a detailed summary of criteria.
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Introduction
Table 1-1 Detailed Summary of Criteria (Sheet 1 of 3)
GR-487 Section(s)
V
E
R
I
F
Y
A
N
A
L
Y
Z
E
I
N
S
P
E
C
T
X
X
T
E
S
T
2 General Information
2.1 General Description
2.2 Operating Environment
X
X
2.3 Telecommunications Equipment
2.4 Test Environmental Criteria
X
X
2.4.1 Ambient Laboratory Conditions
2.4.2 Environmental Tests
X
X
2.4.3 Thermal Soak Time
2.5 Safety Precautions
X
X
2.8 Sample Preparation
2.9 Calibration
X
X
3 Detailed Requirements
3.1 Product Samples
X
3.2 Product Changes
3.3 Safety and Reliability Considerations
X
3.3.1 Restriction of Hazardous Substances (RoHS) Compliance
3.3.3 Surface Temperature Requirements
X
3.3.1.1 Test Conditions for Surface Temperature Measurements for
Cabinets/Enclosures Placed in a Class 4 Environment
3.4 Metallic Materials
X
X
X
3.5 Polymeric and Other Non-Metallic Materials
3.6 Finish
X
3.6.1 Color
3.6.2 Appearance
X
X
X
X
3.6.3 Paint Adhesion
3.6.4 Flexibility
X
X
3.6.5 Paint Adhesion After Exposure
3.6.6 Ultraviolet Resistance
X
X
3.7 Screens and Filters
3.8 Insect Intrusion
X
X
3.9 Door Restrainers (Vertically Hinged Doors)
3.10 Wall-Mounted Equipment
3.11 Horizontally-Hinged Doors
X
X
X
X
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Introduction
Table 1-1 Detailed Summary of Criteria (Sheet 2 of 3)
GR-487 Section(s)
V
E
R
I
F
Y
A
N
A
L
Y
Z
E
I
N
S
P
E
C
T
3.12 Lifting Details
T
E
S
T
X
3.13 Roof Compression
3.14 External Icing
X
X
X
3.15 Security
3.16 Alarms
X
X
X
3.16.1 General
3.16.2 Engine Generator
X
X
3.17 Condensation
3.18 Fans
X
X
3.19 Bonding and Grounding
3.20 AC Power
X
X
X
3.20.1 Commercial Power
3.20.2 Auxiliary Power
X
X
3.21 Splicing Area
3.22 Electronic Equipment Compartment
X
X
3.23 Battery Compartment
3.24 Engine-Generator Compartment
X
X
X
3.25 Pole-Mounted, Aerial Cabinets
3.26 Marking, Packaging, and Shipping
X
X
X
3.27 Installation and Maintenance
3.28 Quality
X
X
3.29 Exposure to High Temperature
3.30 Thermal Shock
X
X
3.31 Water and Dust Intrusion, and Water Resistance
3.31.1 Wind-Driven Rain
X
X
3.31.2 Rain Intrusion
3.31.3 Water Intrusion for Below-Grade Cabinets
X
X
3.31.4 Water Intrusion Flood-Prone Areas
3.31.5 Lawn Sprinklers
X
X
3.31.6 Weathertightness
3.32 Acoustical Noise Emissions
X
X
3.33 Conditional Noise Requirements
3.34 Wind Resistance
X
X
3.35 Impact Resistance
X
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
Introduction
Table 1-1 Detailed Summary of Criteria (Sheet 3 of 3)
GR-487 Section(s)
V
E
R
I
F
Y
A
N
A
L
Y
Z
E
I
N
S
P
E
C
T
T
E
S
T
3.36 Firearms Resistance
X
3.37 Fire Resistance
3.38 Corrosion Resistance
X
X
3.38.1 Salt Fog
3.38.2 Temperature Cycling/High Humidity
X
X
3.39 Shock and Vibration
3.39.1 Transportation Shock
X
X
3.39.2 Transportation Shock (Rail)
3.39.3 Transportation Vibration— Packaged Environment
X
X
3.39.4 Installation Shock
3.39.5 Environmentally Induced Vibration
X
X
3.39.6 Earthquake Resistance
X
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GR-487-CORE
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Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
General Information
2 General Information
2.1 General Description
A cabinet, as defined in this document, is an outdoor enclosure constructed of either
metallic or nonmetallic materials, or a combination thereof, sized to house
telecommunications equipment, including broadband, ranging from active
electronic and optical systems to passive mechanical cross-connect and splicing
fields, as well as backup power. These cabinets provide mechanical and
environmental protection for the equipment contained within, allow access for
craftspersons work activities, and discourage access by unauthorized persons.
Cabinet cooling is provided by various means including, but not limited to, external
natural convection, radiation, internal convection or forced air circulation, fanforced heat exchangers, or various combinations of such cooling methods. Cabinets
may be pad mounted, pole mounted, wall or stub pole mounted, or may be designed
for some other mode of installation.
Considering the complexity of the many current systems, these cabinets may be
separated into discrete compartments to accommodate different craftspersons’
work activities and different equipment. Various sections, possibly isolated, may be
required for certain applications, including a compartment or section for
• Electronic equipment
• Commercial power entrance
• Back-up power
• Generator set
• Cable splicing
• Cross-connect field.
2.2 Operating Environment
Electronic equipment cabinets are designed to withstand climatic conditions
existing throughout the United States including, but not limited to: rain, snow, sleet,
high winds, ice, salt spray, and sand storms. These environments are described in
Section 1.8.1. Ambient temperatures ranging from -40°C (-40°F) to 46°C (115°F),
with varying degrees of solar loading, and humidity levels ranging from below 10%
up to 100%, can be encountered. These temperatures and humidity ranges are
examples and do not necessarily mean that all equipment will see these conditions,
nor does it necessarily encompass all possible climatic or deployment conditions.
Some locations or applications may experience higher temperatures or lead to more
severe thermal conditions; some geographic locations may be prone to earthquakes
or particularly severe lightning storms. In some cases, requirements for specific
areas are provided as conditional requirements.
The cabinets and enclosures described in this GR (where the actual electronics and
equipment are not necessarily known) are intended to provide an internal
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GR-487-CORE
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General Information
environment that meets Class 2 or Class 3 conditions as specified in GR-3108-CORE
and ATIS-0600010.01.[61] This is validated by R3-211 [219]. Cabinets with integrated
or known electronics may exceed these temperature limits provided critical
component temperatures are not exceeded, and the thermal cycling and hot start
tests in GR-3108-CORE are compliant and do not need to comply with R3-211 [219].
2.3 Telecommunications Equipment
Cabinet applications range from housings for active equipment to those providing
environmental protection. Section 1.6, “Products Covered,” describes the type of
housings covered by this document as well as structure and enclosure applications,
which are not covered. Generic requirements for the housed telecommunications
equipment are contained in separate documents.
This GR document should be used in conjunction with telecommunications
equipment. The systems specification should detail the identification and location of
all housed components and the requirements for those components as they relate to
the cabinet in which they are to be housed.
2.4 Test Environmental Criteria
2.4.1 Ambient Laboratory Conditions
R2-1 [224] Ambient laboratory conditions during testing shall be noted in the test report.
2.4.2 Environmental Tests
R2-2 [225] The environmental chambers used in GR-487-CORE shall meet the following
criteria based on GR-3108-CORE[25] and ATIS-0600010.01:[61]
• All environmental chambers shall be capable of controlling temperature within
a tolerance of ±3°C (±5.4°F), and humidity within a tolerance of ±5% RH (unless
otherwise specified.
• For Section 3.29, “Exposure to High Temperature,” (solar load) the chamber (if
used) shall:
— Meet the specifications listed in Section 3.29, and provide at least 1 m
(39.6in) of clearance between the equipment under test and the interior
chamber walls (clearance does not apply to the bottom).
— Have a provision for access that will allow the any necessary wiring and
cabling to pass into the chamber.
• For Section 3.38.2, “Temperature Cycling/High Humidity,” the chamber shall:
— Meet the specifications listed in Section 3.38.2, and provide at least 0.127 m
(6 inches) of clearance between the equipment under test and the interior
chamber walls (clearance does not apply to the bottom).
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— The air flow in the test chamber should be less than 1 m/s (3.28 feet/second)
near the equipment under test. Chamber airflow velocity can be assessed
prior to insertion of equipment under test.
— Control the temperature and humidity such that the rates of change can be
obtained.
2.4.3 Thermal Soak Time
For some tests, it may not be practical to conduct part of the test (e.g., impact) in the
test conditioning environmental chamber. In those cases when it is not practical to
conduct the test in the chamber, after the sample has been properly conditioned, it
is permissible to remove the sample from the conditioning chamber and subject it to
the applied force, load, etc., with testing completed within 10 minutes of its removal
from the test conditioning chamber.
2.5 Safety Precautions
Proper safety precautions shall be followed for all tests conducted. Tests shall be
conducted only by properly trained personnel following local codes, laws, and
practices.
Some test procedures specified in this document are potentially hazardous to
personnel owing to high voltage, high current, extreme temperatures, loud sound,
chemical exposure, firearms, etc. Proper safety precautions are necessary to
prevent injury. Use of these test procedures is solely at the user’s risk.
2.6 Measurements
Where numeric measurements are obtained in testing and are required to determine
conformance, the values shall be rounded up or down based on standard rounding
techniques (e.g., ASTM E 29[40]), unless otherwise specified by the referenced GR or
standard. Test equipment utilized for making these measurements should be
capable of measuring to at least one decimal place beyond the values stated in a
criteria, and shall measure to the accuracy stated by the criteria, referenced GR, or
referenced standard.
2.7 Laboratory Conditions
Normal conditions for the test laboratory are 23° ± 3°C (73° ± 6°F) and 30-60% RH.
Ambient temperatures, humidity, and air pressure for performing tests shall be as
specified in the test method of the criteria, or in the referenced GR or referenced
standard. If no temperature, humidity, or air pressure is provided, these parameters
are not considered critical in the performance of the test. Equipment shall be
exercised according to the specific test methods specified in the criteria, referenced
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GR-487-CORE
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GRs, or referenced standards. In the absence of specific guidelines, the equipment
shall be populated, functionally checked, and exercised in a manner that permits
conformance with the criteria to be adequately demonstrated.
2.8 Sample Preparation
All samples, systems, cabinets and components, shall be representative of
production.
It is acknowledged, complete (full) cabinets may not be appropriate or desired for
all tests, but all test samples and their configuration shall be fully documented.
In the event that multiple closures make up a single closure family, the number of
samples required shall be determined on a case-by-case basis. This determination
shall be made based on an engineering evaluation of the degree of design variation
among the various closures that make up the product family.
2.9 Calibration
Calibration and use of equipment shall be in accordance with ISO 17025:2005,
General Requirements for the Competence of Testing and Calibration
Laboratories.
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Detailed Requirements
3 Detailed Requirements
3.1 Product Samples
R3-1 [1] Samples provided for all product analyses against this document are intended to
be representative of currently manufactured and marketed products. If
pre-production samples are provided, they shall be identified as such and so noted
in the test report. Future production may be inspected by the customer or its agent.
R3-2 [2] Samples provided for all product analyses shall be clearly identified
(manufacturer’s name, model or part number, and date code) and shall include
appropriate documentation. A permanent label, or equivalent, with the
aforementioned information is located in a sealed compartment of the cabinet.
R3-3 [3] For the evaluation process, component parts provided for the product analyses
and tests identified in this GR shall be identified with the cabinet model(s) in which
the parts are used.
3.2 Product Changes
R3-4 [4] The supplier shall provide the customer with proper notification (Product
Change Notice [PCN]) of all product changes including changes in materials used to
manufacture the product. The procedures outlined in GR-209-CORE[6] shall be
followed. Conformance is to be determined by supplier attestation.
3.3 Safety and Reliability Considerations
Equipment shall be manufactured in accordance with the applicable requirements
identified by:
• Federal Communications Commission (FCC), e.g., Part 15.
• Most recent version of NFPA 70,[37] National Electric Code (NEC).
• Most recent version of ANSI/IEEE C2,[35] National Electrical Safety Code
(NESC).
• Department of Labor – Occupational Safety and Health Administration (OSHA).
• Other applicable federal, provincial/state, and local laws, regulations, or
requirements, including but not limited to, statutes, rules, regulations, orders, or
otherwise imposed by law.
The safety guidelines of this section can be evaluated through review of the
installation manual, product specification sheets, and testing experience
(operational and handling) during a product analysis to the tests of
GR-3108-CORE.[25]
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Detailed Requirements
NOTE: The equipment manufacturer and their materials supplier may wish
to consider the possible consequences to environmental regulations and
directives such as the European Union RoHS and WEEE directives, and
Environmental Protection Agency (EPA) regulations, when making their
materials and design choices. Although telecommunications equipment
is currently exempt from RoHS restrictions, suppliers may wish to
consider market forces and possible future restrictions in their choice of
materials for the OSP equipment.
Materials in the product shall present no dermal, environmental, or other safety
hazard as defined by current industry standards or applicable federal, state, or
provincial laws and regulations.
Consideration shall be made for laser safety. See GR-449-CORE,[9] Generic
Requirements and Design Considerations for Fiber Distributing Frames, Section
3.5.2.
Product integrity shall be maintained, and there shall be no deviations from physical
criteria that may or will adversely affect the product with respect to safety,
reliability, interchangeability, life, performance and operation, quality, and
maintenance. The manufacturer shall make any proposal to the user that will
improve the product with respect to safety, reliability, interchangeability, life,
performance, quality, and maintenance.
R3-5 [5] The cabinet shall be free of hazards, such as sharp edges, burrs, etc., that could
present a safety hazard to personnel involved in the assembly, installation, use or
maintenance of the cabinet.
R3-6 [6] This requirement has been deleted per Issue 3.
R3-7 [7] This requirement has been deleted per Issue 3.
R3-8 [8] Unless clearly documented to the customer/carrier, the cabinet shall not include
any known environmental hazards as defined by current industry standards or
applicable laws or regulations.
NOTE: Some customers require that the supplier identify any hazardous
materials and their properties that are shipped with the cabinet or
shipped separately.
By default the
• Reporting of lead is excluded when it is a part of a circuit board or wiring
assembly, unless requested by the customer.
• Reporting of batteries is excluded, unless requested by the customer.
R3-9 [226] Cabinets and Enclosures that incorporate primary protection systems and/or
primary protectors shall comply with the applicable primary protection criteria of
GR-1089-CORE,[17] Sections 4.8 and 4.9.
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Detailed Requirements
3.3.1 Restriction of Hazardous Substances (RoHS) Compliance
CR3-10 [227] If required by the end user, the closure and any associated materials shall
comply with RoHS criteria as detailed in Directive 2002/95/EC of the European
Parliament and of the Council of January 27, 2003.
3.3.2 Listing
CR3-11 [228] A cabinet used in accordance with the ANSI/NFPA 70,[37] National Electric
Code (NEC), installed in an area that is not under the exclusive control of the service
provider such as customer premises, shall be listed by a nationally recognized
testing laboratory and have the testing laboratory’s approval identification on the
cabinet.
3.3.3 Surface Temperature Requirements
Hot surfaces of equipment installed in the OSP may pose a hazard to service
personnel or the general public. Limitations on the temperatures of these touchable
surfaces are necessary to minimize this risk. Limits and conditions for testing are
based on UL 60950-1[80]/UL 60950-22,[81] and GR-3108-CORE.[25] To be consistent
with UL safety standards, the effects of solar loading are ignored during this
particular test.
R3-12 [173] For cabinets/enclosures that are intended to be deployed in a Class 4
environment as defined in GR-3108-CORE,[25] the Equipment Under Test (EUT)
shall comply with one of the following:
• If the equipment is listed as a complete assembly (including the cabinet/
enclosure) to UL 60950-1,[80] utilizing UL 60950-22,[81] R3-12 [173] is met.
If the product is not listed as described in the bulleted item above, the following
criteria shall be met:
• The equipment shall comply with the limits of Table 3-1 when tested according
to the conditions of Section 3.3.3.1, “Test Conditions for Surface Temperature
Measurements for Cabinets/Enclosures Placed in a Class 4 Environment.”
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Detailed Requirements
Table 3-1 Limits for Equipment
Maximum Allowable Temperature (°C)
Metal
Glass, Porcelain,
and Vitreous
Materials
Rubber and
Plastic
External handles, knobs, etc., held
only for a short period of time (≤ 10
seconds).
60°C (140°F)
70°C (158°F)
85°C (185°F)
External handles, knobs, etc., held
for long periods of time (>10
seconds).
55°C (131°F)
65°C (149°F)
75°C (167°F)
External surfaces of equipment that
may be touched by the general
public, or internal surfaces within
customer access compartments of
equipment.
70°Ca (158°F)
80°Ca (176°F)
95°Ca (203°F)
Surfaces within an enclosure that are 70°Cb (158°F)
likely to be touched by service
personnel that are not in customer
access locations.b
80°Cb (176°F)
95°Cb (203°F)
Equipment
a. Surface temperatures ≤ 100°C (212°F) are permissible on the following parts:
• Areas that are not likely to be touched during normal use, that do not have any dimension
exceeding 50 mm (~2 in)
• A part of equipment requiring heat for the intended function (e.g., a heat-exchanger or
cooling fans), provided that this condition is clear to the general public and service person,
as applicable. A warning shall be marked on the equipment in a visible position adjacent to
the hot part. The warning shall be either:
— The symbol (IEC 60417-5041[67] [DB: 2002-10]), or
— The following text (or similar text):
WARNING!
HOT SURFACE
DO NOT TOUCH
b. Temperatures exceeding the limits in Table 3-1 are permitted provided that all the
following conditions are met:
• The part is a heat sink, or unintentional contact with the part is considered unlikely
• The part is marked indicating it is hot. The warning shall be either:
— The symbol (IEC 60417-5041[67] [DB:2002-10]), or
— The following text (or similar text):
WARNING!
HOT SURFACE
DO NOT TOUCH
• The parts do not exceed 90°C/194°F (excluding rubber and plastic parts that cannot
exceed 95°C/203°F).
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Detailed Requirements
3.3.3.1 Test Conditions for Surface Temperature Measurements for Cabinets/Enclosures
Placed in a Class 4 Environment
The following test conditions shall be utilized when making the surface temperature
measurements to determine conformance with Table 3-1.
• The ambient temperature surrounding the cabinet/enclosure shall be
40°C (104°F). This condition is based on UL 60950-22.[81] If the cabinet/
enclosure has no active cooling or fans, the testing can be performed at any
convenient ambient temperature of ≤ 40°C; however, the measured surface
temperature shall then be increased by the difference between the ambient and
40°C.
• The cabinet/enclosure shall be set up and operating/loaded in a manner
consistent with ATIS-0600004,[59] Section 6.4.2.1, with the following exceptions:
— Simulation of high ambient temperature — the 46°C (115°F) temperature
specified in this section shall be replaced by 40°C (104°F).
— Accounting for presence of wind — this section shall be ignored for this test.
— Solar absorptance — this section shall be ignored for this test.
— Clarification of the 753 W/m2 (70W/ft2) — this section shall be ignored for
this test.
— If the equipment inside the cabinet/enclosure is unknown, heat loads
representing the worst-case loading condition shall be installed in the
cabinet and documented.
• Solar loading is not simulated during this test.
• Prior to making the temperature measurements, the cabinet/enclosure shall
reach thermal stabilization based on ATIS-0600004.[59]
• Measurements shall be made with test equipment that meets the requirements
and accuracy specified in ATIS-0600004.[59]
• Measurements made on interior surfaces shall be made within 1 minute of
opening an exterior door or cover. Only 1 door or cover shall be opened at the
same time while making interior measurements.
3.4 Metallic Materials
In general, metallic materials used in cabinet construction shall be resistant to
various forms of corrosion, including general and localized corrosion, as well as
galvanic effects associated with dissimilar metals. The tests indicated in
Section 3.38, “Corrosion Resistance,” shall be used to verify such resistance.
Specific requirements related to metallic usage are indicated below.
CR3-13 [9] Some customers may require that the supplier identify the types of metallic
materials used to fabricate cabinet components and their properties.
R3-14 [34] Carbon-steel pad or pole-mounting hardware shall be zinc-plated per
ASTM A 153.[43]
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Detailed Requirements
R3-15 [35] Stainless-steel hardware and exposed stainless-steel cabinet components shall
be corrosion resistant and passivated and/or equivalent surface treatments.
The following are referenced standards for passivating stainless steel:
• ASTM A 380-05e1,[46] Standard Practice for Cleaning, Descaling, and
Passivation of Stainless Steel Parts, Equipment, and Systems
• ASTM A 967,[51] Standard Specification for Chemical Passivation Treatments
for Stainless Steel Parts.
Passivation Procedures
Typical passivation procedures are described as follows. Passivation is the generic
term applied to procedures developed to remove the presence of metallic (free) iron
from the surface of stainless-steel products. The presence of free iron particles on
the surface of stainless-steel products can cause the product to show rust spots that
should not occur with a clean or “passive” stainless-steel surface. A passive
stainless-steel surface would have no free iron particles that could potentially
corrode or “rust.”
During the handling and processing operations such as forming, machining, and
tumbling, the particles of iron and tool steel can be embedded or smeared on the
surface of the hardware. If allowed to remain, these free iron particles will corrode
and show as rust spots.
The passivation process involves submerging the stainless-steel fastener into a
solution of nitric acid (20-25% by volume), sodium bicarbonate (2-3% by weight) and
water, or 35% nitric by volume and water for some period of time. Twenty (20) to
30 minutes is typical. The nitric acid dissolves the embedded or smeared iron and
restores the original corrosion-resistant surface to the part.
It is generally considered good practice to passivate parts after many manufacturing
processes; however, in some applications it may prove unnecessary. When the need
for passivation is in doubt, testing can provide the answer. ASTM A 380[46] is a
recognized specification that details the specific testing parameters to be met. Parts
that pass the “Passivation Test” per ASTM A 380[46] have a surface void of any free
iron particles. They are considered passive.
3.5 Polymeric and Other Non-Metallic Materials
Unless otherwise noted, these generic requirements apply to both materials inside
and outside the cabinet.
CR3-16 [12] Some customers require that the supplier identify the types of polymeric
materials and other nonmetallic materials used to fabricate cabinet components and
their properties.
R3-17 [13] Cabinet components of polymeric materials shall be free of stress cracks,
stripping, molting, texture or color change after exposure to the chemicals stated
below.
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Test Procedure — Polymeric component parts shall be completely immersed for
1 minute in the following test chemicals and then placed in a three-point fixture as
shown in Figure 3-1. The samples shall be left for a period of 24 hours and then
inspected for the stated defects. A minimum of three samples of each part for each
test chemical shall be exposed.
If samples of test bars cannot be obtained (and for seals and gaskets [test a 2-inch
strip]), test the final molded actual products. Three (3) samples of each molded
product shall be exposed for 30 days following the 1-minute chemical dip, and
Steps 4 and 5 noted below.
Caution: Exercise extreme care when handling chemicals. When mixing the acid
solution, use non-fuming acid, and always add acid to water. Never add water to
acid.
1. For each nonmetallic material used with the closure, fabricate five rectangular
samples having the dimensions 2.5” × 0.5” × 0.125”.
2. Place each sample into a three-point test fixture as shown in Figure 3-1.
3. Load each sample such that a deflection of 0.04 inches is observed.
4. Once saturated and loaded, it is recommended that the samples be placed in a
sealed plastic bag.
5. The test samples may be rinsed with water after the test exposure and before
inspection.
Test Chemicals:
• 3% (by volume) H2SO4 (Sulfuric Acid)
• 0.2N NaOH (Sodium Hydroxide)
• NH3 (Household Ammonia)
• 90% (by volume) Isopropyl Alcohol
• Kerosene (flash point greater than 71°C [160°F] per ASTM D 56[41])
• 10% (by Volume) Igepal CO 520, CO 630, or CO 720 per ASTM D 1693[54]
• CRC Water-displacement Lubricant
• WD-40 Water-displacement Lubricant
• Cable Filling Compound, as used in the field
• Splice Encapsulating Compound
• Wasp and Hornet Spray.
NOTE: Some service providers may require a different set of chemicals as
listed above.
NOTE: 0.2N Sodium Hydroxide (NaOH): This solution represents basic
materials that may contact telecommunications products. Basic
compounds can accelerate degradation and corrosion, and can dissolve
metals like aluminum.
Normality (“N”): The “0.2N” is an abbreviation for either an acidic or basic
solution standing for 0.2 Normality. A 1.0 Normal solution contains one
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equivalent gram weight of the NaOH in a liter of solution (e.g., water). An
equivalent gram weight of material is the molecular weight in grams of the
solute that will produce or react with one mole of hydrogen ions. In the case
of NaOH, the equivalent gram weight equals 40 grams.
1“
10-32
190-32
UNF-2A
Unf-2A X 0.75“
Angle,
Aluminum
0.75“
1“
1“
Test
Sample
Test Sample
0.125“
Dowel
0.125“
Dowel
0.25“
0.375“
1“
2“
0.125“
Dowel
0125“
typical
2.5“
Figure 3-1. Three-Point Test Fixture
CR3-18 [14] This requirement has been combined with the test procedure in R3-17 [13] per
Issue 3.
R3-19 [15] Polymeric materials parts shall be non-corrosive to metals and shall be
compatible with other materials used in the manufacturing of the cabinet.
R3-20 [16] Parts made of polymeric materials (excluding insulated wire, cable, and foam
gasket materials) shall have a minimum flammability rating of 94 V-1 when tested
per UL 94.[76] Note: This requirement does not apply to components smaller than
20 cm3 (approximately 1 in3) in volume since this is not considered to represent a
significant fuel load. Plastic component flammability can be determined by review
of the material’s UL Recognition in color and thickness used.
Alternatively, conformance with the materials flammability criteria in
GR-3108-CORE or ATIS-0600307[63] are acceptable to demonstrate conformance
with this criteria.
R3-21 [174] Internal insulated wire and cable used within the cabinet shall meet the
flammability requirements of UL 1581[79] when tested in accordance with the VW-1
Vertical Flame Test. Review of the wire and cable NRTL report can be used to
determine conformance.
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Alternatively, conformance with the materials flammability criteria in
GR-3108-CORE or ATIS-0600307[63] are acceptable to demonstrate conformance
with this criteria.
R3-22 [175] Foam gasket materials used internal to the cabinet shall meet the 94 HF-1
flammability requirement of UL 94.[76] Plastic component flammability can be
determined by review of the material’s UL Recognition in the color and thickness
used.
Alternatively, conformance with the materials flammability criteria in
GR-3108-CORE or ATIS-0600307[63] are acceptable to demonstrate conformance
with this criteria.
R3-23 [17] Any part of the exterior housing, if polymeric, shall have a flammability rating
of 94-5VA when tested per UL 94.[76] Plastic component flammability can be
determined by review of the material’s UL Recognition in the color and thickness
used. As an alternative, the UL 746C,[77] Section 17, “5-Inch Flame test,” can be used.
The following items are excluded:
• OSP Wire and Cable
• Grommets
• Bushings
• Seals
• Gaskets
• O-rings
• Potting Encapsulating Compounds (provided these are less than
0.25 cubic foot).
R3-24 [18] Samples of all polymeric closure materials shall not support fungus growth
when tested per ASTM G 21.[39] A rating of 0 or 1 is required.
Test Procedure — Three (3) samples of each component made from polymeric
compounds shall be tested per ASTM G 21.[39] The samples may be cleaned prior to
fungus exposure.
Discussion — It is generally preferred that the results of ASTM G 21[39] testing
demonstrate a rating of 0. However, observations have been made in laboratory
testing that in some cases, variables other than the materials can be introduced in
the testing process that can result in a rating of 1. At a minimum, the materials shall
meet the rating of 1; however, some end customers may still require a rating of 0.
Thus, careful consideration of material selection and careful testing processes are
highly important in achieving end user expectations.
R3-25 [19] The purpose of the following criteria and test is to determine the effects of
ultraviolet exposure, if any, on the tensile and elongation properties of non-metallic
materials that are exposed to direct sunlight for the vast majority of their operating
life. Exterior polymeric materials components that are exposed to sunlight,
including seals and gaskets, shall be resistant to ultraviolet degradation. Following
exposure per ASTM G 154,[44] the ASTM D 638[50] test bars samples (Type 1, dog3–9
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bone shaped) shall retain 75% of their original tensile strength. Seals and gaskets
exposed to the same conditions shall show no signs of hardening or brittleness as
determined by hand flexing.
Samples of external, non-metallic materials from an outdoor cabinet shall not have
a reduction in tensile yield strength or yield elongation properties greater than 20%
of their original value, after being exposed to one of the conditions outlined in
Table 3-2. If the sample does not exhibit a yield point, the breaking strength and
elongation are applicable.
Table 3-2 Ultraviolet Resistance Sources
Standard
Source
Duration of
Exposure
ASTM G 154[44]
UVA: 340 nm
2,000 hours
ASTM G 155[45]
Xenon Arc: 340 nm
1,000 hours
ASTM G 154[44]
UVB: Type 313
1,000 hours
Note for Table 3-2: The test cycle shall be a repetitive cycle of 4 hours of UV
light at 60°C (140°F) followed by 4 hours condensation (UV light off) at
50°C (122°F).
Test Procedure
1. Prepare 10 ASTM D 638[50] test bars (Type 1, dog-bone shaped) of each external
non-metallic material per the same manufacturing process that produces the
closure component or an alternate process that produces an equivalent sample
(i.e., injection mold, cut from extruded sheet, etc.). The target thickness is per
the ASTM. If this thickness is not attainable, then a test thickness shall be agreed
upon between the closure supplier and the customer.
2. Measure the tensile yield strength of 5 un-aged control samples per
ASTM D 638.[50] Record the elongation at yield. The average of these 5
measurements shall represent the baseline tensile strength and elongation at
yield. If the material does not exhibit a yield point, record results at break.
3. Expose the 5 remaining test bars to UV radiation per ASTM G 154[44] (Cycle 1),
ASTM G 155[45] (Cycle 1), or ASTM G 154 (Cycle 3) as outlined in Table 3-2.
4. Repeat the yield of each exposed sample using the same procedure in Step (2)
above. Average the 5 results and compare to the results obtained in Step (2). If
the samples have become brittle and break before yield, compare the break
results to the yield results from Step (2).
5. Record the test results.
R3-26 [20] Seals and gaskets shall retain their physical characteristics after oven aging.
Test Procedure — Seal and gasket sample parts shall be aged at a temperature of
70°C (158°F) in a circulating-air oven for a period of 168 hours. Following this
exposure, there shall be no visible deterioration, deformation, melting, or cracking
of the aged samples and they shall not harden as determined by hand flexing.
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R3-27 [21] Components manufactured from rubber compounds, such as seals and
gaskets, shall show no signs of surface ozone cracking.
Test Procedure — Test samples shall be prepared as stated in Method A of
ASTM D 518.[47] Samples shall be exposed for 70 hours at 40 ± 1°C (104 ± 2°F) at an
ozone level of 50 (±5) mPa partial ozone pressure using the ozone test apparatus
described in ASTM D 1149.[52] Samples shall show no signs of cracking when
observed under 2× magnification after this exposure.
R3-28 [22] This requirement has been deleted per Issue 3 since it has been embedded in
appropriate test procedures.
3.6 Finish
3.6.1 Color
R3-29 [23]The manufacturer of the cabinet shall utilize Master Color Standards to identify
available cabinet colors. The color of each standard shall be characterized using the
CIELAB system of color notation as described in ASTM D 2244.[56] If the customer
requires a cabinet color differing from that normally available, an appropriate
Master Color Standard shall be utilized.
R3-30 [25] The color of production cabinets shall be measured periodically to confirm
compliance with the Master Color Standard. The maximum permissible variations
from the Master Color Standard are ±1.0 for ∆L, ∆a, and ∆b values; and ±1.5 for ∆E
using the CIELAB system of color notation as described in ASTM D 2244.[56]
R3-31 [26] The supplier shall provide touch-up paint for all painted exterior/interior
metallic components of the cabinet in a convenient container as specified by the
customer. This paint shall match the applicable Master Color Standard as stated in
R3-29 [23]. The cabinet documentation shall contain ordering and application
information for the paint.
3.6.2 Appearance
R3-32 [27] Non-textured painted metallic housings shall have a gloss (60° specular) of 60°
(minimum) in accordance with ASTM D 523.[48]
Test Procedure — Two minimum 4-inch × 6-inch samples of cabinet material
finished with each color paint shall be prepared by the manufacturer to be
representative in material type, surface finish treatment, and thickness of finish.
Gloss shall be measured in accordance with procedures of ASTM D 523.[48]
R3-33 [28] Gloss and Haze — Gloss measured at 60° specular and the level of gloss shall
be reported. Acceptable gloss values for plastic materials are between 40° and 75°,
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with a minimum value of 60° being the objective requirement. Reflected haze shall
be measured and reported using gloss measurements at 60° and 20°.
R3-34 [29] Painted cabinet surfaces shall have a uniform finish and texture.
3.6.3 Paint Adhesion
R3-35 [30] Finishes of painted metal surfaces shall be subjected to a scrape adhesion test.
There shall be no removal or separation of paint particles or breaking of the finish
by the scraping loop to the extent of exposing the secondary finish (e.g.,
galvanizing).
Test Procedure — Two minimum 4-inch × 6-inch samples of cabinet material
finished with each color paint shall be prepared by the manufacturer to be
representative in material type, surface finish treatment, and thickness of finish.
Tests shall be conducted in accordance with ASTM D 2197[55] on the top (finish)
coat using an 8 kg (17.5 lbs) load on the scraping loop.
3.6.4 Flexibility
R3-36 [31] The finish on painted metal surfaces shall not exhibit radial cracking when
subjected to an impact test in accordance with ASTM D 2794.[57]
Test Procedure — Two minimum 4-inch × 6-inch samples of cabinet material
finished with each color paint shall be prepared by the manufacturer to be
representative in material type, thickness, surface finish treatment, and thickness of
finish. The test shall otherwise be conducted in accordance with ASTM D 2794[57]
using an impact of 18 J (160 in-lb) and a 1.59 cm (0.625 in) diameter indentor.
Alternatively, this test may be performed on a sample of 24-gauge steel.
NOTE: Steel was specified for consistency; therefore, a painted steel sample
can be used even for an aluminum cabinet.
3.6.5 Paint Adhesion After Exposure
R3-37 [32] The finish on painted metal surfaces shall demonstrate satisfactory adhesion
when tested in accordance with ASTM D 1654,[53] including exposure to salt fog.
Test Procedure — Two minimum 4-inch × 6-inch samples of cabinet material
finished with each color paint shall be prepared by the manufacturer to be
representative in material type, thickness, surface finish treatment, and thickness of
finish. The samples shall be scribed to bare metal as described in ASTM D 1654.[53]
Each sample shall have a minimum combined scribe length of 64 cm (25 in). The
samples shall then be exposed to salt fog per ASTM B 117[42] for a period of 30 days.
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Samples shall be oriented so that droplets run across the scribe marks. The samples
shall be evaluated per ASTM D 1654,[53] Procedure A, Method 2, after exposure. A
minimum rating of 7 is required at the scribes.
3.6.6 Ultraviolet Resistance
R3-38 [33] Samples of each exterior metallic material shall be exposed to UV light and
condensation per ASTM G 154.[44] After exposure, the panels shall meet the
Flexibility (R3-36 [31]) criteria.
Test Procedure — Two samples prepared as described in R3-36 [31] shall be
exposed to UV light per Table 3-3. Samples shall then be subjected to the Flexibility
requirement, R3-36 [31].
Table 3-3 Ultraviolet Resistance Sources
Standard
Source
Duration of
Exposure
ASTM G 154[44]
UVA: 340 nm
2,000 hours
ASTM G 155[45]
Xenon Arc: 340 nm
1,000 hours
ASTM G 154[44]
UVB: Type 313
1,000 hours
Note for Table 3-3: The test cycle shall be a repetitive cycle of 4 hours of UV
light at 60°C (140°F) followed by 4 hours condensation (UV light off) at 50°C
(122°F).
3.7 Screens and Filters
R3-39 [36] Cabinet cooling systems using outside air, such as heat exchangers, shall
minimize the need for replacing or washing screens or air filters. The supplier’s
documentation shall cover maintenance and/or replacement of the screens or filters,
as appropriate.
R3-40 [37] Non-corrosive (per Salt Fog testing) screens, filters, or other means shall be
used on all inlet and outlet ventilation openings in the cabinet to minimize the
entrance of dust and insects. The supplier’s documentation shall cover maintenance
and/or replacement of the screens or filters, as appropriate.
R3-41 [38] Screened areas shall inhibit the entrance of water from rain and sprinkler
exposure. Conformance of this criteria is determined during the applicable Waterresistance tests in Section 3.31, “Water and Dust Intrusion, and Water Resistance.”
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R3-42 [39] In the event of excess moisture that may enter the cabinet, drain holes, or
openings in the cabinet shall be resistant to clogging and minimize the entrance of
dust and insects per UL 50.[73] The maximum allowed is 1/8 inch (3 mm).
Conformance of this criteria is determined by visual inspection.
R3-43 [229] Filter life and filter maintenance shall be specified in the supplier’s
documentation.
3.8 Insect Intrusion
R3-44 [230] The cabinet shall not permit the intrusion of stinging insects (and other
nuisance pests) when assembled per the manufacturer’s instructions.
• A maximum opening of 1/8 inch (3 mm) is required to keep out stinging insects.
See Figure 3-2 for examples of permissible openings.
• In areas with forced air, a maximum opening shall not exceed 0.16 inch
(4.1 mm).
The above openings shall also comply with the Weathertightness test, Section 3.31.6,
“Weathertightness.”
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Figure 3-2. Insect Intrusion
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3.9 Door Restrainers (Vertically Hinged Doors)
R3-45 [40] Cabinet doors shall be equipped with a corrosion-resistant device (i.e., zinc
plated or stainless steel), or other equivalent corrosion-resistant material that
restrains the doors in an open position. (Cabinets may incorporate multiple open
positions.) Conformance of the material can be demonstrated by complying with the
Salt Fog test in Section 3.38.1. This criteria does not apply to small cabinets.
R3-46 [41] The door-restraining device shall be self activating when the doors are opened
and shall be released manually in order to close the doors. Door restrainers shall
minimize audible “rattling” when in the engaged position. This criteria does not
apply to small cabinets.
R3-47 [42] The cabinet and door restraints shall be capable of withstanding, without
mechanical damage or loss of function, the opening and closing forces resulting
from a wind speed of 22 m/sec (50 mph). This criteria does not apply to small
cabinets.
Test Procedure — The cabinet shall be mounted consistent with the
manufacturer’s instructions. The door shall be held in the open position by the door
restraining device. A force F shall be applied to the outer edge of the door,
perpendicular to the door surface, in both the opening and closing direction, in turn.
The force shall be applied by means of a tensioning device (e.g., winch coupled with
a force meter) and shall be maintained for a minimum of 10 seconds in each
direction. The time to fully achieve the peak force F shall be greater than 30 seconds.
The test shall be performed for each possible open-restrained position. The force F
is calculated as follows:
F = 0.025 WH
where,
F = force, lbs
W = door width, inches
H = door height, inches.
R3-48 [176] The cabinet and door restraints shall be capable of withstanding, without
mechanical damage or loss of function, the dynamic impact loads resulting from a
wind speed of 13 m/sec (30 mph) swinging the door open prior to activation of the
door restraints. This criteria does not apply to small cabinets.
Test Procedure — The cabinet shall be mounted consistent with the
manufacturer’s instructions. The cabinet door shall be temporarily maintained in a
position 30° prior to the engaged open position. (If there are several open engaged
positions, the test shall be performed for each local position. In this case, the cabinet
door shall be temporarily maintained in a position 30° prior to the local engaged
open position, but not at or below the previous engaged position.) A force F shall be
applied by means of stretching a long spring to the outer edge of the door in its
temporarily maintained position, tending to pull the door open, as indicated in
Figure 3-3. The force F is calculated as follows:
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F = 0.010 WH
where,
F = force, lbs
W = door width, inches
H = door height, inches.
The spring shall be anchored a minimum distance 5W away from the hinge of the
door (Figure 3-3.) The door shall be released from its temporary open position and
allowed to swing open until restrained by either the door restraints or the hinge
hardware. The spring shall have a maximum stiffness (spring constant) of 5 lbs/ft.
All reasonable safety precautions shall be followed to ensure personnel are not
subjected to dangers resulting from the dynamic motion of the spring or door.
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Top View
Legend
Open Restrained Position
Initial Testing Position
Cabinet
W
30o
5W minimum
Spring
Not to Scale
Anchor
Figure 3-3. Dynamic Wind Test
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3.10 Wall-Mounted Equipment
R3-49 [231] The mounting means of equipment intended for wall mounting shall be
adequate. Compliance is checked by inspection of the construction and of available
data, and where necessary, by the following test.
Test Procedure — The equipment is mounted in accordance with the installation
instructions. A force, in addition to the weight of the equipment, is applied
downwards through the center of gravity of the equipment for 1 minute. The
additional force shall be equal to 3× the weight of the equipment, but not less than
4.5 kg (10 lbs). The equipment and its associated mounting means shall remain
secure during the test. After the test, the equipment, including any associated
mounting plate, shall not be damaged.
O3-50 [177] This objective has been deleted per Issue 3.
3.11 Horizontally Hinged Doors
R3-51 [43] A maximum force of 13.6 kg (30 lbs) shall be required to lift or close a
horizontally hinged (raised) door. This criteria does not apply to small cabinets.
Test Procedure — The door shall be unlocked and the lifting force applied in the
recommended manner. The required force shall be recorded as the door is raised to
its full open position and again while closing the door.
R3-52 [44] For cabinets using a mechanical assist system to meet requirement R3-51 [43],
the system shall meet this requirement at -40°C (-40°F) and 65°C (149°F), after
soaking and stabilization at these temperatures. This criteria does not apply to small
cabinets.
R3-53 [45] For cabinets using a mechanical assist system to meet requirement R3-51 [43],
the system shall function properly after repeated door operations. This criteria does
not apply to small cabinets.
Test Procedure — The door shall be opened and closed 3,000 times and then be
visually checked for excessive component wear. R3-51 [43] must be met after the
3,000 open/close cycles.
R3-54 [46] In the event of failure of the mechanical assist system, it shall be possible to lift
the door to its full open position by simultaneously applying a maximum lifting force
of 18.1 kg (40 lbs [80 lbs total]) at each of the door’s lower corners. This criteria does
not apply to small cabinets.
Test Procedure — The door shall be unlocked and the lifting force applied at each
corner of the door along its bottom edge. The forces shall be applied perpendicular
to the door surface and be recorded as the door is raised to its full open position.
R3-55 [47] A door support mechanism, with a positive engagement feature, as opposed to
the use of friction, springs or gas charged cylinders, shall be provided to hold the
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door in its full open position. This mechanism shall engage automatically and shall
require manual disengagement. This criteria does not apply to small cabinets.
R3-56 [48] The door support mechanism shall engage to prevent the door from dropping
when the lifting force is removed at any position during the door lifting procedure.
This criteria does not apply to small cabinets.
R3-57 [49] The door support mechanism shall function properly and be free of excessive
wear after repeated door operations. This criteria does not apply to small cabinets.
Test Procedure — The door shall be opened and closed 3,000 times. After the 3,000
open/close cycles, with the door in the full open position, a force equal to 3× the
weight of the door (minimum of 90.7 kg [200 lbs]) shall then be applied at the center
of the door. The force shall be applied perpendicular to the door surface for a
minimum of 10 seconds. There shall be no failure or permanent yielding of
components as a result of this test.
R3-58 [50] The door shall open a minimum of 90° so that its full open position is in (or
above) a plane parallel to the ground level pad, passing through the door’s hinges to
the cabinet’s mounting surface. This ensures that the lowest edge of the door is at
the hinge and adequate head room is provided. This criteria does not apply to small
cabinets.
R3-59 [51] There shall be a minimum clear height when measured from the bottom of the
cabinet of 1.93 m (6 ft-4 in) at a distance of 61 cm (2 ft) from the cabinet with the
door in its full open position. This criteria does not apply to small cabinets.
R3-60 [52] A means at a height no greater than 1.73 m (5 ft-8 in) shall be provided to allow
for pulling the door closed. This criteria does not apply to small cabinets.
CR3-61 [53] Some customers shall require that the door provide a means to attach a curtain
to its outer edges to provide additional protection during inclement weather. This
criteria does not apply to small cabinets.
R3-62 [55] The cabinet shall be properly guttered, if necessary, to ensure that water
running off of the fully opened, raised door will not enter the electronics chambers
of the cabinet. This criteria does not apply to small cabinets.
Test Procedure — Spray-head piping as described in UL 50E,[74]“Rain Test,” shall
be utilized. The center spray head shall be positioned at the center of the open door
and at a distance of 1.22 m (4 ft) from the door surface. The piping shall run parallel
to the door’s width. The spray shall be applied for 30 minutes using 207 kPa (30 psi)
spray-head pressure. This can be determined when conducting the Rain Intrusion
test, Section 3.31.2, “Rain Intrusion.”
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3.12 Lifting Details
R3-63 [56] Any cabinet packaged for shipping and weighing in excess of 90.7 kg (200 lbs)
shall be provided with means, such as eyebolts, for attaching hoisting lines. Lifting
details shall be clearly specified in the installation practice. Eyebolts shall be
positioned to allow for stable, balanced, and level movement of the cabinet.
R3-64 [57] Eyebolts or screws used for lifting shall not protrude through the cabinet
housing and into the interior of the cabinet shall be such that removal does not allow
water entrance into the part of the cabinet that houses electronics. Eyebolts shall be
removable after installation if they protrude above the cabinet surface. If removed,
a substitute of non-corrosive caps shall be provided. The caps shall meet material
requirements specified in this document.
R3-65 [58] For any cabinet (as shipped) weighing more than 90.7 kg (200 lbs), there shall
be no visible deformation or damage to the cabinet when the lifting attachments are
loaded to 3× the weight of the fully equipped cabinet (excluding packaging materials
and skid). When loaded to 6× the weight of the fully equipped cabinet, there shall be
no catastrophic failure of the lifting details.
NOTE: The fully equipped cabinet includes only the equipment intended to
be inside the cabinet at the time of shipment and installation. The cabinet
supplier’s installation practice shall be provided with information
regarding which equipment is intended to be installed (or not installed)
when the cabinet is shipped (e.g., batteries). The total weight of
equipment permitted inside the cabinet when shipped and installed shall
be provided in the cabinet supplier’s installation practice.
Test Procedure — The cabinet shall be bolted to a restraining member such as a
secured concrete slab or steel plate. The lifting setup, such as slings (e.g., lengths,
angles, etc.), will be representative of the supported worst case as listed in the
supplier documentation. In the event the test precedes the creation of supplier
documentation, the actual test condition limits will then be written into the supplier
documentation.
Upon completion of the documented setup, the cabinet shall be subjected to a lifting
load through the lifting attachments that will be equal to 3× the weight of the fully
equipped cabinet for 1 minute. Additionally, it will then be subjected to a test 6× the
weight of the fully equipped cabinet for 30 seconds. (The application of the 6× load
to the lifting attachments may require bracing of the cabinet. Such bracing shall not
reinforce the lifting attachments.)
3.13 Roof Compression
CR3-66 [232] The cabinet shall withstand a 300-lb load for 15 minutes, applied at each
location on the attached figure, on top of the cabinet (with all storage and
maintenance hardware installed) in its stored position. There shall be no mechanical
damage that would affect operation of the cabinet. The test shall be conducted
once at each of the positions on the same sample. The 300 lbs shall be placed on a
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1-foot square steel or aluminum block. The test shall be conducted on the center
lines in the middle, and flush to the edge of the cabinet roof.
• If the roof edge includes a gutter that prevents a flush placement, then the weight
shall abut the gutter.
• If lifting eyes interfere, remove the lifting eyes.
• If other hardware on the roof interferes with the flat placement of the weight, an
additional base with clearance cut-outs may be used.
• For smaller cabinets with no sides that exceed 3 feet, test one time in the center
of the roof.
• This would not be required for H-frame and wall- or pole-mounted products that
are less than a 1.5 square foot roof surface area.
See examples of top views in Figure 3-4.
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CL = Center Line
Figure 3-4. Roof Compression
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3.14 External Icing
CR3-67 [233] Some customers require additional assurances that the cabinet can function
after a freezing rain storm. Therefore,
• The cabinet’s documentation shall describe how to clear and access the cabinet
with ordinary tools and not damage the cabinet.
• This documented method shall be proven using, UL 50E,[74] Section 8.5,
“External Icing Test.”
3.15 Security
R3-68 [59] All hinged exterior doors shall be locked through use of a multi-point locking
mechanism to ensure that all door corners and edges are secure. The mechanism
shall have sufficient clearance from all gaskets, equipment, and other cabinet
surfaces to insure proper operation even if the cabinet is off-level but within the
limits specified by the manufacturer for proper installation. This criteria does not
apply to small cabinets.
O3-69 [60] It is desirable to use a single, multi-point locking mechanism on all exterior
doors. Fasteners on all moving parts shall not fall off or loosen under normal use.
Conformance shall be determined by exercising the locking mechanism 100 times,
and performing a visual inspection. This criteria does not apply to small cabinets.
CR3-70 [178] Some customers require a provision for adding an auto-lock mechanism to
the cabinet.
CR3-71 [61] Some customers require that all exterior doors have a provision for a padlock.
Access panels can either have a provision for a padlock or can use securing
mechanisms (e.g., special bolts or screws) that require a special tool for removal. In
such cases, where a padlock is used, the padlock hasp shall accept a 0.64 cm (1/4 in)
diameter padlock shackle. The normal installation of the padlock shall not result in
damage to any painted surface.
R3-72 [62] In order to ensure access by only authorized personnel, a hinged door locking
mechanism shall be activated by a special security tool that cannot be readily
purchased or duplicated.
NOTE: Some customers may require a specific security tool to minimize the
number of tools carried by the craftsperson.
NOTE: This requirement may also be applied to entry panels.
CR3-73 [63] This has been deleted per Issue 3 and combined with R3-72 [62].
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R3-74 [179] The door locking hardware and mechanism shall be capable of withstanding
anticipated torque levels, without physical distortion, damage, or loss of
functionality.
Test Procedure — A torque of 400 in-lbs minimum shall be applied to the door
opening hardware handles by means of the manufacturer specified tool and a
commercially available torque tester, and be maintained for a minimum of 5 seconds
and then released. This procedure shall be repeated a total of 10 times. Manually
operated door handles shall also be subjected to the same torque level, duration, and
number of cycles. Locking systems without handles and a hex-head interface shall
withstand a torque of 80 in-lbs; otherwise, 50 in-lbs for those without a hex-head
interface. Security systems intended to lock the cabinet such as a hasp or key shall
withstand a torque of 20 in-lbs.
R3-75 [64] The door locking mechanism shall be properly sealed to prevent water
intrusion into the cabinet. Conformance of this criteria is determined during the
applicable Water Resistance tests in Section 3.31, “Water and Dust Intrusion, and
Water Resistance.”
CR3-76 [65] Some customers shall require that exterior, removable access panels be
fastened with security screws requiring the same tool as is used for the hinged door
locking mechanism. This is determined by visual review of the cabinet.
CR3-77 [66] Some customers shall require the use of a special locking mechanism that is
integrated into each door in lieu of the cabinet manufacturer’s standard locking
mechanism. This is determined by visual review of the cabinet.
3.16 Alarms
3.16.1 General
R3-78 [67] Intrusion alarms shall be provided for remoting to an alarm monitoring center,
such as a Network Operation Center (NOC). This criteria does not apply to small
cabinets.
R3-79 [234] When provided, AC power alarms shall provide remoting to an alarm
monitoring center. This criteria does not apply to small cabinets.
CR3-80 [68] Some customers shall require that an audible, local intrusion alarm be provided
to work in conjunction with the remote alarm. When required, a timed (as specified
by the customer) reset feature shall be provided to allow the craftsperson to
temporarily inhibit the audible alarm. This criteria does not apply to small cabinets.
R3-81 [69] Cabinets with active cooling systems, such as forced-air ventilation or other
heat-exchange systems, shall provide a cooling-system or any cooling-subsystem
failure alarm for remoting to an alarm monitoring center.
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CR3-82 [70] Some customers require that a temperature sensor be located in the electronic
equipment compartment to provide a high temperature alarm (customer specified)
for remoting to an alarm monitoring center. (This feature may be provided by the
housed equipment.)
CR3-83 [180] Some customers require that an alarm be provided for remoting to an alarm
monitoring center upon detection of failure of a battery compartment heater system.
R3-84 [235] Contact breakers and other service-affecting switches shall be designed and
positioned to minimize the risk of accidental activation during routine maintenance
and operation (e.g., recess breakers and switches or provide covers).
R3-85 [236] The alarm contact closures on the equipment shall be capable of supporting
up to a maximum of 60 VDC and a minimum of 100 mA, per TR-NWT-000154,[5]
General Requirements for 24-, 48-, 130-, and 140-Volt Central Office Power Plant
Control and Distribution Equipment.
NOTE: Output alarm connections are typically dry contacts and are isolated
from each other and other circuits (including the frame ground). It is
recommended that the output alarm contacts be returned to the alarm
input on a paired lead (e.g., ALM & ALM_RETURN1). If a paired lead is
not used, then it is suggested that the alarm inputs on the equipment
should support individual output alarm contacts that have a common
return lead for all contacts. The intent of these wiring recommendations
is to help reduce the chance of mis-wiring leading to false alarms.
R3-86 [181] For cabinets using an active system (i.e., activated by the detected hydrogen
concentration level) to meet the maximum hydrogen concentration requirements of
R3-142 [108], an alarm shall be provided for remoting to an alarm monitoring center
upon detection of the risk of excess hydrogen concentration in the battery
compartment. (An alarm is not required for cabinets using a passive system to meet
the hydrogen concentration requirements.)
NOTE: If a product is tested without fans in operation in R3-142 [108], it can
be considered a “passive system.” An “active system” uses forced air
(usually by fans) to reduce excess hydrogen. A “passive system”
uses vents, not forced air, to remove excess hydrogen.
O3-87 [182] Upon detection of the risk of excess hydrogen concentration in the battery
compartment, it is an objective that some customers may require that the rectifier
be shut down and latched off, and manual intervention be required to restore power.
O3-88 [237] It is an objective that some customers may require remote monitoring of the
operating condition of the AC surge protector device per O3-110 [85].
O3-89 [238] It is an objective that some customers may require that a temperature sensor
be located in the electronic equipment compartment to provide a low temperature
alarm (customer specified) for remoting to an alarm monitoring center. (This
1. ALM = Alarm lead. ALM_RETURN = Alarm return lead.
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feature may be provided by the housed equipment.) Some equipment, such as radio
controls, optical transmitters, and batteries are affected by severe and extended
cold periods, which might hamper operation. When installing OSP solutions in the
north, where equipment has this sensitivity, an additional cold temperature sensor
may be required.
3.16.2 Engine Generator
R3-90 [239] Cabinets containing a permanent engine generator (Section 3.24) shall
provide the following additional alarms, or equivalent, for remoting to an alarm
monitoring center. Unless otherwise indicated, the term “engine generator” as used
in this document refers to both engine generators (DC output) and engine
alternators (AC output). The customer may modify these alarm requirements to
satisfy local monitoring schemes and capabilities, or may require that additional
alarms, present at the engine generator, be remoted to the alarm monitoring center
(see TR-NWT-001293,[15] Section 4.12). The definitions described below shall be
used to assign failure nodes as Major or Minor.
• Engine Failure (Major) is when the engine generator failed to attain proper
operation or was shut down by one of its safety shutdowns.
• Engine Failure (Minor) is when there is low or high engine temperature, low
engine oil, failure of battery charger, or low battery voltage.
• Proper Operation is when commercial power has failed and the engine
generator has started, and has assumed the load.
• Load Transfer is when commercial power has failed and the engine generator
has started, but has not assumed the load.
3.17 Condensation
Cabinets are subjected to a wide range of outdoor environmental conditions,
including temperature and humidity. For non-HVAC cabinets containing electronic
equipment, the internal power dissipation following turn-up will tend to significantly
reduce the likelihood of condensation within much of the cabinet. In general, the
cabinets must avoid condensation both before and after turn-up, when exposed to
external ambient humidity levels in the range of 5% to 95% relative humidity.
R3-91 [71] The manufacturer shall provide instructions and procedures to minimize the
formation of condensation on installed electronic telecommunications equipment
prior to turn-up in various environments. These procedures shall be documented in
the cabinet installation and maintenance practices.
R3-92 [72] When the cabinet is in operation, condensation shall not form on or drip onto
the electronic equipment. The manufacturer shall specify the means to accomplish
this in various environments. Cabinets shall be shipped with desiccant. As an
example, a solution may include a drip shield provided over the electronic
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equipment, the cabinet shall be provided with double-walled construction, semipermeable membrane vents, etc. It is also possible to determine that the heat
generated by the cabinet is sufficient to prevent humidity buildup.
3.18 Fans
Fan manufacturers provide L-10 life ratings for their fans. The L-10 rating is an
industry standard indicating that 90% of the fans in a test sample will be functional
(operate at rated speed) after operating at the specified temperature for the
specified number of hours. L-10 is based on a temperature acceleration method
defined in MIL-STD-781.[72] Fan failure is defined as the
• Fan does not work
• RPM is 30% of original, and
• Rated current is 30% of original.
R3-93 [73] All cabinet fans shall have a minimum L-10 life rating of 40,000 hours at 40°C
(104°F).
O3-94 [187] It is desirable that cabinet fans have a minimum L-10 life rating of 80,000 hours
at 40°C (104°F).
O3-95 [188] To minimize noise, fans should be connected to a door switch that turns off
non-critical fans when the cabinet doors are open.
O3-96 [189] To allow for verification of fan operation, an override means should be
provided to allow fans to operate with the doors open and regardless of
temperature. The button should be clearly labeled and in an accessible location that
is separate from the audible alarm-inhibit button.
R3-97 [190] Accessible fans shall be equipped with guards to prevent personal injury.
Conformance can be determined by visual inspection to ensure a guard is used, and
the use of the IEC 60950-1[80] or GR-1089-CORE[17] test finger. The test finger tip
shall be placed in openings of the fan guard at any angle. A force up to 30 N shall be
applied to the test finger while keeping the finger joints straight. The ability to touch
moving parts of the fan is not permitted. This requirement does not apply when
servicing a fan or fan module.
3.19 Bonding and Grounding
R3-98 [74] The cabinet shall include a copper or copper-alloy bonding buss bar that has
the capacity to terminate a minimum of 8 ground wires, of solid or stranded 6 AWG
copper, associated with internal metallic and/or fiber optic cables and external
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grounding to power company MultiGround Neutrals (MGNs), transformers, etc. The
bonding buss bar shall accommodate ground wires terminated with dual-hole lugs.
NOTE: Smaller enclosures that are intended to accommodate only a few
equipment subassemblies do not need to meet the requirement for
8 ground locations. However, the enclosure shall have enough ground
locations to accommodate all the equipment with a unique ground
location for each assembly plus earth ground.
NOTE: Smaller enclosures with fixed integrated electronics do not need to
meet this criteria; however, they must be able to be terminated with a
6 AWG ground wire using a dual-hole lug.
R3-99 [75] The bonding buss bar shall have a cross section, not including the hole area,
exceeding that of 6 AWG wire and provide electrical continuity between all bonds
and ground wire with a current carrying capacity equal to or exceeding that of a
6 AWG copper wire.
R3-100 [240] The ground buss bar shall accommodate two 2 AWG 5/8-inch spacing dualhole ground lugs. This is intended for connection to a grounding electrode. This does
not apply to small cabinets.
R3-101 [77] The bonding arrangement shall permit the lifting of individual cable bonds,
without the disturbance of other bonds, during testing activities or maintenance.
R3-102 [78] The doors of a metal cabinet shall be grounded by bonding each door to the
main cabinet using a flexible copper braid or other means, such as through the door
hardware, equivalent to a 6 AWG copper wire minimum. There shall be no
interference with gaskets, door operation, etc. For lift-off doors, a detachable frame
ground connection is required.
NOTE: Covers and access panels that do not remain attached to the
enclosure during servicing do not require a ground strap. However, if
they remain attached to the enclosure (i.e., via hinges, etc.), they must
comply with GR-1089-CORE,[17] R9-11 [149].
R3-103 [241] Cabinets and enclosures (bonding and grounding) shall comply with
GR-1089-CORE,[17] R9-9 [147].
R3-104 [242] Cabinets, internal mounting structures, and internal electronic equipment
shall be bonded and grounded in accordance with the applicable criteria of
GR-1089-CORE,[17] Sections 9.1, 9.2, 9.3, 9.5, 9.6, 9.7, 9.8, and 9.9.
3.20 AC Power
Requirements in this section apply to cabinets housing equipment that require
commercial AC power input. Typical deployed electronic cabinets are powered by
an adjacent or co-located power pedestal, or by commercial power directly
terminated at the cabinet.
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3.20.1 Commercial Power
Requirements R3-105 to CR3-114 apply to cabinets with AC power. Not all cabinets
and enclosures are fed by AC contain circuit breakers and distribution panels.
Apparatus cases and small cabinets simply may have power wiring feeding a power
supply and no electrical distribution equipment inside. The electrical distribution
and circuit breakers/fuses are located in an adjacent cabinet.
R3-105 [79] Cabinets served with commercial power shall accept 120/240 volt, single phase,
power with an amperage service sized as required to power the electronic
equipment in the cabinet.
NOTE: Some customers may require a 208 volt, single phase service, as well.
NOTE: Some customers specify increased amperage service to facilitate
future expansion.
R3-106 [81] Cabinets served with commercial power shall be powered using a Nationally
Recognized Test Laboratory (NRTL) certified power distribution panel (e.g., listed
to UL 67[75]) containing a main circuit breaker and/or individual circuit breakers of
the correct size as required for the electronic equipment or as specified by the
customer.
R3-107 [82] A decal showing an electrical schematic of the AC power wiring shall be affixed
to the inside surface of the cabinet.
R3-108 [83] The service entrance connection panel for termination of the commercial AC,
including overcurrent protection devices and other components individually, shall
conform to requirements of the National Electrical Manufacturers Association
(NEMA) and National Electrical Code (NEC) and shall be listed by an NRTL.
R3-109 [84] A surge suppressor shall be provided to protect systems from surges in the
120/240 volt service and load center. This shall be a gapless suppressor listed by an
NRTL for the purpose intended. The surge suppressor shall be placed on the main
power feed to the load center.
O3-110 [85] The surge suppressor shall be selected based on the susceptibility of the
equipment powered by the electrical service with margin provided for locally
generated disturbances. Refer to ANSI/IEEE C62.41[36] and TR-NWT-001011.[16]
R3-111 [86] At least one 120 volt AC, 15 amp duplex convenience outlet, capable of
plugging in a transformer (AC to DC converter) with dimensions of 3 inches × 3
inches × 3 inches, shall be provided in the cabinet. All convenience outlets shall be
equipped with Ground Fault Interrupter (GFI) protection. All GFI outlets shall be
labeled “Test Before Use.”
NOTE: It is not required that the commercial AC power serving and directly
connected to equipment within the cabinet be equipped with GFI
protection. Such outlets shall be marked as “Non-GFI – Not a
Convenience Outlet.”
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NOTE: R3-111 [86] may not apply to small cabinets.
NOTE: R3-111 [86] applies to an adjunct cabinet if it is provided with an AC
load center.
CR3-112 [87] As specified by some customers, a means shall be provided to facilitate the
mounting of a commercial power meter on one of the cabinet surfaces.
R3-113 [88] A means shall be provided for routing power from the power meter base to the
distribution panel or, for cabinets powered by a separate pedestal, for routing
underground power to the cabinet.
CR3-114 [191] Some customers shall require a cabinet option that provides for integrated
power distribution, external meter mounting, generator input, and power transfer
switches.
3.20.2 Auxiliary Power
The criteria in this section do not apply to auxiliary power that is transported over
twisted-pair telecommunications wiring.
R3-115 [192] Cabinets containing a permanent engine generator (DC output) for auxiliary
power shall comply with TR-NWT-001293,[15] Section 4.11.2.
R3-116 [193] For cabinets containing a permanent engine-alternator (AC output) for
auxiliary power, an automatic power transfer switch shall be provided. This switch
shall comply with TR-NWT-001293,[15] Section 4.3.
R3-117 [89] For cabinets using a portable engine-alternator for auxiliary power, an NRTLlisted power transfer switch and NRTL-listed auxiliary generator input connector
shall be provided as a cabinet component or located externally in a separate
enclosure as stipulated by the customer. This connector shall comply with the
customer’s requirements.
NOTE: An external power transfer switch shall be utilized. It shall be outdoor
rated such as 3R, per UL 50E.[74]
R3-118 [91] For all cabinets using commercial AC power with a portable energy-generating
device, a power input connector shall be provided to facilitate the connection of a
portable engine-alternator at the transfer switch. This connector shall comply with
the customer’s requirements.
R3-119 [92] Power transfer switches shall have a positive interlock feature so that it is not
possible to have both alternative power sources on simultaneously. The supplier
shall contact the customer to determine if there are any other specific requirements
imposed by local electrical codes. It shall be verified that the interlock is covered by
the NRTL listing of the power transfer switch.
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CR3-120 [93] Some customers may require that an indicator lamp be provided for each leg of
the commercial power to indicate when commercial power is being supplied.
3.21 Splicing Area
Smaller cabinets and enclosures may not have room or the need for a splice
compartment. The criteria in Section 3.21 (this subsection) are intended when a
splice compartment is practical and feasible based on the size and type of enclosure.
It is permissible for smaller cabinets and enclosures to not have a splicing
compartment; however, there must be room for proper cable bend radius, and
entrances must be sealed properly.
R3-121 [94] For cabinets containing a splicing area, space shall be provided for splicing and
storing the splice(s) for the maximum number and sizes of feeder and distribution
cables that can be accommodated by the cabinet. The cabinet shall allow for splice
cables/tails to be stored in such a manner that they are easily removable and
replaceable when new cables/tails are added. Lance points, panels, and/or shields
shall be provided that allow for copper cable splices to be stored so that it protects
the cables and inhibits the transfer of filling compounds to other sections of the
cabinet.
R3-122 [95] This requirement has been deleted per Issue 3.
CR3-123 [194] Some customers require that an appropriate hardware or container be
provided to facilitate the encapsulation of splices within the splicing compartment.
This may not be feasible for small cabinets.
CR3-124 [96] Some customers require that the splicing area be accessible through a hinged
outside door or a removable panel.
R3-125 [97] A minimum of two cable access ports shall be provided in the base of the splice
area. These ports facilitate the entrance of metallic and fiber cables — typically,
1.3 cm to 8.3 cm (0.5 in to 3.25 in) in diameter — through 4-inch trade conduits. (The
conduits will extend vertically out of the cabinet’s concrete mounting pad.)
R3-126 [98] The cabinet shall be able to be placed over the conduits (with cables in place)
without the need for the craftsperson to reach under the cabinet to feed cables into
the cable access ports. This includes any external power and ground.
R3-127 [99] Cable entrance seals shall be provided to seal between the cables and their
point of entrance into the cabinet, thereby preventing water and rodent intrusion
into the splice chamber.
R3-128 [195] Splicing areas shall include sufficient space to organize and secure all
intended supported cables, such as copper, fiber, coaxial, and bonds (ground). This
includes at a minimum tie-downs, and accounts for the bend radius of all cables.
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If necessary, the cable-wire manufacturers and/or the carrier information should be
provided to validate that all bend radii have been maintained.
R3-129 [196] Splicing areas shall facilitate all cable preparation and termination.
R3-130 [197] Cables provided for splicing shall facilitate all cable preparation and
termination. Termination is typically made approximately 3 feet outside the cabinet.
R3-131 [198] This requirement has been deleted per Issue 3.
CR3-132 [199] Some customers require that sufficient space be provided to store and
support as much as 15.24 m (50 feet) of fiber cable while maintaining a minimum
bend radius of 10 times the cable’s diameter.
R3-133 [200] For cabinets terminating fiber cables, sufficient space shall be provided to
store and securely mount appropriately sized fiber-termination apparatus.
CR3-134 [201] Some customers require provision for the storage and secure mounting of
fiber cable(s) and splicing arrangements.
3.22 Electronic Equipment Compartment
R3-135 [101] The electronic equipment compartment shall be accessible through a hinged
outside door.
NOTE: In lieu of hinged doors, access panels or lift-off panels are acceptable
on small enclosures.
CR3-136 [102] This has been combined with the above requirement.
R3-137 [103] The electronic equipment compartment, GR-3108 Class 2 or Class 3, shall be
cooled without the entrance of outside air.
NOTE: Small vents in the equipment compartment may be provided to
control humidity and condensation by means of the gradual entrance of
a small amount of outside air over an extended period.
CR3-138 [243] If it is desirable to the end user to allow outside air to enter the cabinet for
cooling, the air must be filtered and conditioned so the cabinet passes all applicable
GR-487-CORE tests, and does not create undue maintenance issues.
Normally, electronic equipment is tested as a GR-3108, Class 2 environment. By
allowing filtered and conditioned outside air, it is a GR-3108 Class 3 environment. To
properly evaluate the effects of using a GR-3108, Class 2 tested product in Class 3
environment testing, it shall be conducted on a fully populated cabinet per the Salt
Fog test in Section 3.38.1. Equipment operation shall be verified after the test.
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NOTE: The use of outside air for cooling has been used in wireless
applications.
3.23 Battery Compartment
Electronic equipment cabinet applications typically require an 8-hour battery
reserve for “life-line” telephony services (e.g., per TA-NWT-000406).[8] However, for
cabinets supported by permanent on-site auxiliary power, a reduced reserve is
sufficient, such as 1 to 2 hours. This section applies only to cabinets provided with
batteries.
R3-139 [104] The cabinet’s maximum battery capacity (physical volume and estimated
amp-hours), consistent with the hydrogen evolution rate of R3-142 [108], shall be
provided by the cabinet manufacturer.
R3-140 [105] The location of batteries shall provide the best possible condition(s). Items to
consider are operational temperatures, ventilation, physical installation, and the
structural integrity of the cabinet.
R3-141 [107] Batteries shall be stored within a separate compartment sealed from the other
cabinet compartments and adequately ventilated to the atmosphere outside of the
cabinet.
R3-142 [108] The battery area/compartment shall be vented to eliminate explosion hazards
due to the release of gaseous products by the batteries. Hydrogen gas
concentrations in the battery compartment or any other cabinet compartment shall
not exceed 1.0% by volume. The cabinet manufacturer shall specify and verify the
maximum hydrogen evolution rate that can be ventilated by the battery
compartment without exceeding a maximum hydrogen concentration of 1% in the
cabinet. This hydrogen evolution rate shall be compatible with the maximum
number of batteries intended for use in the cabinet. The number of batteries shall be
indicated by the cabinet manufacturer.
Test Procedure — Helium (or hydrogen with appropriate safety measures) may be
used to measure the performance of the battery compartment ventilation system in
order to determine the maximum allowable hydrogen evolution rate. Helium
sensors shall be placed in all cabinet compartments that are subjected to hydrogen
evolution from the battery compartment. The cabinet shall then be placed in an
enclosure to prevent air movement around the cabinet during testing. Helium shall
be injected into the battery compartment until a concentration of 1% is reached. The
rate of helium injection required to maintain a 1% concentration under steady-state
conditions shall be reported. Steady state shall be defined as a maximum variation
of ±0.25% over a period of 1 hour. The test shall be performed with the cabinet
stabilized at 25°C (77°F). For cabinets using temperature-activated fans, the fans
shall not be active during this test.
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O3-143 [109] It is desirable that temperatures above 46°C (115°F) and below
-10°C (14°F) be avoided in the battery area to maximize the life and capacity of the
batteries.
R3-144 [110] Thermostatically controlled heating pads or other means shall be provided to
maintain the battery temperatures above the recommended minimum temperature.
The battery manufacturer shall provide the intended operating temperature range.
The temperatures depend on both the battery technology deployed and the battery
manufacturer. This feature shall be available as both a factory and field installed
option and cabinets shall be pre-wired to support these options.
R3-145 [111] Batteries shall either be stored in battery drawers, or the cabinet shall have
front access to the batteries to facilitate installation, and as required for
maintenance.
R3-146 [112] Battery drawers, when provided, shall open fully allowing replacement of any
battery without the need to move any other batteries in the string, and provide
adequate spacing for proper ventilation between batteries over their entire length.
Drawer glides shall continue to function in the event of contamination (sand, dust,
etc.).
R3-147 [113] The battery chamber shall facilitate the safe installation, inspection, or
replacement of the batteries in a minimum amount of time by one person. Thus, for
cabinets providing a battery shelf to support front access, the shelf shall
• Allow replacement of any battery without the need to move any other batteries
in the string
• Provide adequate spacing for proper ventilation between batteries over their
entire length
• Provide a surface for easy installation and removal of batteries
• Meet all applicable material requirements of this GR document.
CR3-148 [115] Some customers shall require that the battery chamber allow the visual
inspection of both terminals on each battery in normal daylight without the use of
mirrors, insulated hand tools, or the need to disconnect the cabling harness.
R3-149 [117] Any required ancillary cabinet apparatus that may come in contact with the
battery terminals shall be insulated to prevent possible shorting.
R3-150 [118] The battery chamber shall prevent rodent entry, minimize the penetration of
insects, contaminants, and water, and prevent water from getting onto the posts of
the battery. The chamber shall also allow for water drainage.
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3.24 Engine-Generator Compartment
Cabinets may be equipped with a permanent engine generator to provide emergency
DC or AC power, or both, depending on the needs of the housed equipment.
Alternatively, a separate engine generator may be permanently located adjacent to
the cabinet, or a portable engine generator would be used as necessary.
R3-151 [202] The engine generator shall be located in a secure, lockable compartment
within the cabinet.
R3-152 [203] All engine-generator controls shall be located within the secured engine
compartment.
R3-153 [204] Engine generators shall meet the general and functional requirements
outlined in TR-NWT-001293,[15] Sections 3 and 4. The test procedures provided in
TR-NWT-001293, Section 8, shall be utilized to verify conformance.
R3-154 [205] Engine generators shall meet the marking, packaging, and shipping
requirements outlined in TR-NWT-001293,[15] Section 5.
R3-155 [206] Engine generators shall meet the quality assurance requirements outlined in
TR-NWT-001293,[15] Section 6.
R3-156 [207] Engine generators shall meet the documentation and training requirements
outlined in TR-NWT-001293,[15] Section 7.
R3-157 [208] Cabinet components shall minimize head losses in engine air intake and
exhaust systems. Required combustion air (cubic feet per minute) and allowable
exhaust system back-pressure (inches of mercury) can be provided by the engine
manufacturer.
R3-158 [209] Cabinet ports for engine air intake and exhaust shall be located above
expected snow depths for the geographic area of deployment.
R3-159 [210] Cabinet ports for engine air intake and exhaust shall be protected from water,
snow, or ice blockage.
R3-160 [211] Shutters utilized on engine air intake and exhaust ports shall be protected
from freezing that will prevent or restrict their operation.
R3-161 [212] Cabinet engine exhaust ports shall be protected from wind-generated velocity
heads that will increase exhaust back-pressure.
R3-162 [213] The engine compartment shall allow front access to components requiring
periodic service.
R3-163 [214] The engine compartment shall be cooled to ensure that the engine generator
does not exceed its manufacturer’s recommended maximum operating temperature
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after continuous operation for 4 hours under worst-case conditions. Worst-case
conditions are defined as
• Engine generator operating at maximum output power
• Ambient temperature of 46°C (115°F)
• Cabinet exposed to maximum solar load as defined in R3-208 [152].
R3-164 [215] The temperature of the exhaust gases at all points of the exhaust stream
outside the cabinet shall not exceed 200°C (392°F) at a velocity of 10 m/s[70]
(33 ft/sec), in a 40°C (104°F) ambient. For velocities other than 10 m/s, and greater
than 3 m/s, the temperature shall not exceed the value
200°C × (10/air velocity)1/2
where the air velocity is given in m/s.
3.25 Pole-Mounted Aerial Cabinets
R3-165 [244] To determine if a cabinet can be held safely by a pole and its mounting
hardware, a fully loaded cabinet shall be weighed. The cabinet shall be mounted as
intended, and an additional load shall be applied, such that the total load is 3× its
maximum loaded weight. This weight shall be applied for 1 minute. Damage that
could result in the cabinet falling from the pole shall not occur.
NOTE: The placement of the additional weight should approximate the
actual normal load, and be documented in the test report.
R3-166 [119] Pole-mounted aerial cabinets equipped with cable stubs shall provide
mechanical strain relief to the cable stub to permit shipping, handling, and hoisting
of the cabinet without causing damage to the cabinet or to the stub.
R3-167 [120] Cabinets furnished with terminated cable stubs shall have the metallic shield
of the stubs bonded to the copper or copper-alloy bonding buss bar with the
electrical continuity of a 6 AWG copper wire minimum.
CR3-168 [121] Some customers shall require that a craftsperson safety-strap attachment
point be provided with pole-mounted aerial cabinets. This safety-strap attachment
point, either on the cabinet, the pole-mount assembly, or independent of the cabinet
and pole-mount, shall withstand the specified test shock load without permanent
deformation to the safety attachment, cabinet, or any associated components.
Test Procedure — The safety-strap attachment point shall be mounted per the
manufacturer’s instructions and a 1.22-m (4-ft) long safety strap shall be attached to
the attachment point using a snap-hook on one end of the strap. The snap-hook on
the opposite end of the strap shall be attached to a 136-kg (300-lb) weight. The
weight shall be raised to the level of the safety-strap attachment point and permitted
to free fall for 1.22 m (4 ft).
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Detailed Requirements
CR3-169 [245] Anchorages used for attachment of personal fall arrest equipment shall be
independent of any anchorage being used to support or suspend platforms and
capable of supporting at least 22.24 kN (5,000 lbs). This safety-strap attachment
point shall withstand the specified test load without permanent deformation of any
associated components.
Test Procedure — A 5,000-lb weight shall be hung for 1 minute from each cabinet
safety attachment point.
CR3-170 [216] If required or recommended by the manufacturer to achieve greater strength
or stability, the manufacturer shall provide hardware for mounting the cabinet on
two adjacent poles and shall include detailed procedures for proper installation.
CR3-171 [246] The cabinet door(s), panels, and service areas shall be capable of being
opened when used in an aerial application with a service platform or balcony, when
such a platform or balcony has been constructed within the parameters as
documented by the cabinet manufacturer.
3.26 Marking, Packaging, and Shipping
Packaging meeting the applicable requirements of GR-2759-CORE,[20] A View of
Packaging, Packing, Palletization, and Marking Requirements, is considered to
meet the intent and criteria of the requirements in this section.
R3-172 [123] A complete set of documentation shall be provided with the cabinet to
facilitate proper installation and maintenance. The following topics shall be
covered. Additional topics may be required by the customer.
• List of tools and equipment required for installation
• Safety procedures to be followed
• Site preparation details
• Concrete pad construction details
• Cabinet placement and mounting details
• Utility and power requirement (integrated cabinets)
• Electrical schematic of the cabinet, including location of alarm access points
• Best practices for OSP cable management
• Installation, maintenance, and repair procedures
• Cabinet manufacturer’s telephone number for technical assistance and ordering
parts
• Installation, maintenance, and repair procedures for field installable or
replaceable parts or equipment.
R3-173 [124] Cabinet suppliers with installed telecommunications equipment shall provide
a decal(s) on the inside doors of the cabinets containing information about the
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equipment system, internal cabling, powering schematics, etc., and shall provide
space for recording other data per the customer’s instructions.
CR3-174 [125] Some customers require that the manufacturer prepare training packages,
which may include audio-visual presentations, for the purpose of training
craftspersons in the placement and use of the cabinet. Training requirements are
addressed in GR-839-CORE.[12] The manufacturer should contact the customer for
specific requirements.
R3-175 [247] The cabinet shall be readily identifiable and marked with the manufacturer,
model number, date code of manufacture, and serial number.
R3-176 [126] The cabinet’s shipping container shall be readily identifiable and marked with
the manufacturer, model number, date code of manufacture, serial number, and
approximate gross weight.
R3-177 [127] All shipping container and pallet markings shall be a minimum of
• 0.19 inch characters on surfaces of 50 square inches or less
• 0.38 inch characters on surfaces between 50 and 250 square inches
• 0.50 inch characters on surfaces between 250 and 500 square inches
• 0.75 inch characters on surfaces over 500 square inches.
R3-178 [128] A shipping container shall be provided to protect the cabinet and associated
components from damage during shipping and handling. Small components, e.g.,
screws, nuts, etc., shall be packaged in transparent sealed packages.
R3-179 [129] The packaging shall be adequate and the cabinet cushioned, blocked, braced,
and anchored as necessary to prevent movement and to ensure that no damage will
occur to the unit under normal handling and shipping conditions from the
manufacturer to the final installation site.
R3-180 [130] During shipment and any subsequent outdoor storage or preinstallation
period, the manufacturer shall provide materials and methods to ensure that the
cabinet and its contents are protected from moisture damage for a minimum of
2 months.
R3-181 [131] The shipping pallet shall be constructed to allow the cabinet to be moved by
a forklift from the ends, or the sides, as required. The length of forks required for
safe lifting shall be clearly marked. If the pallet cannot be lifted from a particular end
or side, that surface shall be clearly marked to alert the fork lift operator.
R3-182 [132] The shipping pallet shall withstand the abuse of shipping and handling and
minimize splintering of its components. This shall be determined after samples are
subjected to the transportation shock, rail shipping, and transportation vibration
tests of Section 3.39, “Shock and Vibration.”
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Detailed Requirements
R3-183 [133] Non-metallic tie-down straps shall be used to avoid possible damage to the
cabinet during shipping and handling.
3.27 Installation and Maintenance
R3-184 [134] Properly sized, corrosion-resistant hardware (bolts, washers, and
lockwashers), per R3-14 [34] and R3-15 [35], shall be provided to permit proper
installation of the cabinet. See the Salt Fog test in Section 3.38.1, “Salt Fog.”
R3-185 [135] Corrosion-resistant shims (per R3-14 [34] and R3-15 [35]), as required, shall be
provided to ensure proper installation of the cabinet and to facilitate door alignment
per the manufacturer’s instructions.
CR3-186 [217] Pad-mounted cabinets requiring leveling or alignment to ensure proper
operation shall not require external means of lifting to be leveled. The means for
leveling the cabinet shall be integrated into the cabinet, not interfere with shim
placement, and be able to be withdrawn or retracted after shims are supporting the
cabinet.
R3-187 [136] Corrosion-resistant inserts, per R3-14 [34] and R3-15 [35], shall be provided
for pad-mounting brackets or frames to eliminate the potential for any corrosion of
the cabinet after being installed on the pad. A vapor/moisture barrier shall be
provided between any metal surface and the concrete mounting pad. See R3-198
[147].
R3-188 [137] The manufacturer shall make replacement parts available for a minimum of
10 years from the date of manufacture.
R3-189 [138] The manufacturer shall identify all components of the cabinet that may
require maintenance (monthly, yearly, etc.).
R3-190 [139] Ordering information shall be provided for parts that may require
replacement.
O3-191 [140] Replacement parts should be obtainable through a local distributor and the
manufacturer. The supplier should list all parts that are available locally, and should
list all parts that are only available from the supplier.
O3-192 [141] Equivalent parts information should be provided for those parts that can be
obtained from other manufacturers. The supplier should list all parts that are
available locally, and should list all parts that are only available from the supplier.
R3-193 [142] Complete cabinet installation instructions shall be provided as stated in
Section 3.27. Prior to cabinet installation, it should be assumed that the pad, cable
entrance conduits, and possibly the cables will be in place.
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R3-194 [143] A pad for cabinet mounting shall be made of precast or cast-in-place
reinforced concrete or other suitable prefabricated material. Any brackets, inserts
for fastening, conduit openings, gaskets, or other items necessary for cabinet
mounting or pad construction shall be identified by the manufacturer in a detailed
pad drawing(s) covering all sizes of pads that could be installed.
CR3-195 [144] Some customers shall require that the pad drawing include information for
mounting a commercial power pedestal (specified by the customer).
R3-196 [145] The manufacturer shall provide a template for locating inserts, conduit
openings, or slots for cast-in-place concrete pad construction.
R3-197 [146] The manufacturer shall supply pad installation instructions pertaining to pad
bearing surface, compaction, levelness and elevation relative to final grade, and
should note that conduit for cable placing and necessary grounding devices must be
installed prior to placement of the cabinet mounting pad.
R3-198 [147] For concrete pad-mounted cabinets having an aluminum mounting surface,
the manufacturer shall provide a non-metallic gasket for use between the concrete
pad and the cabinet mounting surfaces to eliminate the potential for chemical
corrosive action. Caulking compounds are not to be used at this interface.
O3-199 [218] A non-metallic gasket should be used on cabinets having steel mounting
surfaces to prevent corrosion in case paint is scraped off the cabinet surface.
CR3-200 [148] Some customers require that the pad extend 61 cm (2 ft) beyond the opened
doors of the cabinet to allow for additional working space in and around the cabinet.
CR3-201 [248] For skin-able cabinets, some service providers require that the outside
housing of the cabinet can be replaced without any affect on service.
R3-202 [249] For adjunct cabinets, the instructions shall adequately describe installation
methods and procedures for any necessary modification(s) to the parent cabinet
with particular attention to
• Location of any holes cut in the parent cabinet, for example:
— Power feeds shall not pass through the electronic equipment compartment
— The separation of the electronics, battery, splice, and power-feed
compartments shall be maintained.
The quality and type of materials used for seals, gaskets, and conduit used to make
connections between the adjunct and parent cabinet shall be suitable for the
purpose. The final configuration (adjunct and parent) shall preserve the seal
integrity of the system to help ensure that the Water and Dust Intrusion resistance
(Section 3.31) is not compromised.
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3.28 Quality
R3-203 [250] The manufacturing processes, test and inspection procedures, and quality
program used by a manufacturer shall be adequate to ensure that technical
requirements and customer endpoint requirements are met.
R3-204 [251] The supplier shall be registered to TL 9000 Quality System Requirements,
QuEST Forum.
NOTE: TL 9000 is a quality management system for design, development,
production, delivery, installation, and maintenance of
telecommunication products and services. The TL 9000 Quality System
requirements include a minimum set of performance metrics and
indicators to measure progress and evaluate results of the quality system
implementation. The new TL 9000 became effective March 30, 2001, and
comprises the ISO 9001:2000 quality system requirements (released
December 15, 2000) supplemented by additional quality system
requirements established by the telecommunications industry.
R3-205 [252] The supplier shall, upon request, allow the customer or its representative to
verify the ongoing quality and reliability of the product by means of an on-site quality
surveillance program. Details of this program are normally addressed during
contract negotiations.
R3-206 [149] This requirement has been replaced with the above quality requirements.
R3-207 [150] This requirement has been replaced with the above quality requirements.
3.29 Exposure to High Temperature
This section is a harmonization of GR-487-CORE, Issues 1 and 2; GR-3108-CORE;
and ATIS 0600010.10.[61]
Thermal stress is a major contributor to equipment malfunctions, reduced long-term
reliability, and component failure. Thermal conditions are dependent on the
conditions both outside and inside the cabinet. Thus, the ambient temperature, solar
loading, and equipment power dissipation, including that associated with a possible
engine generator (Section 3.24), are critical factors. In addition, external and
internal conductive, convective, and radiative thermal paths have significant effects
on the temperature of housed equipment, circuit packs, and individual components.
The presence and operation of the housed equipment changes internal and external
thermal paths and thermal gradients within the cabinet. Therefore, Thermal tests
must be performed on fully equipped operational cabinets, representative of that
provided by the supplier and deployed by the customer. During these high
temperature thermal tests, the temperatures of key thermal locations, on or within
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housed equipment or circuit packs, are measured and confirmed to be within the
manufacturer’s acceptable limits to ensure proper equipment functionality and
reliable operation.
Solar energy incident upon and absorbed by the cabinet (Solar Load) can equal or
exceed the power dissipated by the equipment operating within the cabinet. The
Solar Load anticipated in field applications depends on many variables. Simulation
of the full range of field variables is beyond the scope of this document. Therefore,
the objective of the present test procedure(s) is to provide practical, repeatable
means of determining and applying the Solar Load, and which can reasonably
account for cabinet design variations (e.g., materials, shape, cooling method, etc.).
The solar loading procedure and appropriate test method as determined in Table 3-5
may be applied to any type of equipment that is exposed to solar radiation.
Equipment without fans or other methods of stirring air within an enclosure will
generally require being tested as Category 2, since hot and cold spots could occur
with heat strips and no internal air circulation. Heat strips cannot be used on
nonmetallic surfaces, since surfaces such as polymeric compounds are poor
conductors of heat. Care must be utilized in picking the appropriate method with
regard to the enclosure’s geometry and irregular surfaces. For more complex shapes
such as cones or pyramids, the entire surface area shall be exposed to the solar
radiation, unless the manufacturer can provide engineering rationale that a reduced
area is appropriate. It should be noted that when analyzing energy-absorbing
surfaces and areas, only the significant contour characteristics need to be
considered for the surface area calculations. Small irregularities or protrusions, or
shape changes (e.g., ridges, heat sinks fins, mounting/door hardware, and other
similar features) may be ignored in terms of general shape complexity, and may be
ignored in the calculation of additional surface area. The intent is to simulate as
accurately as possible the solar radiation characteristics that could be imparted on
the equipment. If it is unclear whether the equipment can use heat strips, but it can
be shown by engineering analysis to be valid and feasible, the equipment may be
tested using Category 1.
NOTE: When analyzing energy-absorbing surfaces and areas, only the
significant contour characteristics need to be considered for
surface-area calculations. Small irregularities or protrusions, or shape
changes (e.g., ridges, mounting/door hardware, and other similar
features) may be ignored in terms of general shape complexity, and may
be ignored in the calculation of additional surface area.
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Table 3-4 Solar Load Categories
Category 1 — Heater Strip or Luminaries,
Manufacturers Discretion
• Cabinet with forced-air convection employed
as a cooling means within the enclosure (e.g.,
heater exchanger with fans or electronics
with fans)3
Category 2 — Luminaries
Only
• Equipment that does
not meet all criteria for
Category 1
• Cabinet with an enclosure whose solar
surface area consists of ≥80% metallic
construction1
• Cabinet that is a simple geometric enclosure
• Cabinet equipment with outer solar surface
areas that do not have protrusions, fins, or
other characteristics that would impede the
use of heater strips1,2
NOTE 1: Solar surfaces are those surfaces determined to have the maximum exposure to
direct sunlight at any single incidence of exposure, typically a roof, front, and one side.
Other surfaces are not to be considered for application of heater strips or luminaries.
NOTE 2: Generally, if the protrusions do not increase the surface areas (of the surfaces being
exposed) by more than 15%, this condition is met.
NOTE 3: A small cabinet without fans that meets the other conditions, but has metallic surface
areas (see Note 1) each less than 0.37m2 (4 ft2), can be tested with heater strips since the
heat distribution should be reasonably uniform.
R3-208 [152] The cabinet supplier shall identify the critical thermal locations and their
associated maximum allowable temperatures for all originally supplied equipment
and for all equipment manufacturers in the corresponding cabinet configuration.
The housed equipment, circuit packs, and individual components identified shall not
exceed their specified maximum rated operating temperatures when the cabinet is
subjected to an ambient temperature of 46°C (115°F) and maximum solar load using
the stated test procedure below. The presence, location, and details of fans or other
cooling components, such as heat exchangers, shall be noted, as well as the
presence of an engine generator within the cabinet. A detailed description of the test
procedure, including all relevant calculations and assumptions, shall also be
provided.
CR3-209 [253] Some customers may require that the cabinet as described in R3-208 [152] be
subjected to an ambient temperature of 125°F (51.7°C).
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R3-210 [254] The adhesives used on seals and gaskets shall maintain adhesive qualities,
including no visible indication of movement, and function properly after exposure
to environmental extremes and other shocks.
Test Procedure
A. Electronic Equipment
The cabinet shall be fully equipped and populated with the equipment and circuit
packs corresponding to the tested model number. For a given cabinet model
number, the model and vintage circuit packs selected shall be those
corresponding to the maximum heat dissipation rate within the cabinet,
consistent with the cabinet specifications and usage.
The cabinet supplier shall provide the following information for all housed
equipment:
• Identification, manufacturer, and model number and vintage of equipment
shelves and circuit packs
• Location in cabinet during testing
• Heat dissipation when operating at maximum output
• Sensitivity to condensation or environmental contaminants
• Schematic of operational cabinet
• Detailed operating procedures to be followed during testing.
NOTE: When a fully or partial functional load is not practical, and the
equipment has been proven to function at higher temperatures, the test
laboratory may use heater strips in lieu of functional cards to simulate or
augment the functional load. This substitution or augmentation does not
include fans.
B. Cabinet Mounting
The cabinet shall be mounted to simulate the worst-case heat transfer mounting
conditions expected in use. For example, if a pole-mounted cabinet can be
mounted on either a wooden or metal pole, the wooden pole shall be used in the
test because of its lower thermal conductivity. For a ground-mounted cabinet,
the test floor shall not provide greater thermal conductivity than the expected
mounting pad. If the test is to be conducted in a chamber with a metal floor,
insulation, such as plywood, may be required to minimize heat transfer from the
cabinet to the floor.
C. Simulation of High Ambient Temperature
Testing shall be performed in a room or chamber where the temperature is
allowed to stabilize at or below 46°C (115°F). To prevent the ambient
temperature from exceeding 46°C (115°F) for high power cabinets, it may be
necessary to cool the room or chamber walls and/or ceiling (for example, with a
wind shielding room built within a temperature controlled room or chamber).
Temperatures provided by sensors located within the cabinet and at key
components and locations shall be adjusted to reflect the difference between the
ambient room temperature and 46°C (115°F). For example, for a room
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temperature of 22°C (72°F) all internal measured temperatures would be
increased by 24°C (43°F) to obtain the temperature to be reported. The room
ambient temperature shall be measured at a minimum distance of 1 m (3 ft)
horizontally from the cabinet and vertically, at the mid point of the cabinet above
the room or chamber floor. The ambient temperature sensor shall be shielded
from, or placed to avoid, local temperature effects such as those induced by
radiation or forced air flow from the cabinet or test equipment.
D. Presence of Wind
The presence of wind, which is likely in many geographic locations, can result in
lower internal cabinet temperatures. However, to avoid an uncontrolled variable
and the associated loss of accuracy and repeatability, the test cabinet shall not
be subjected to wind generated by the test environment (e.g., air conditioning,
fans, open doors, test equipment cooling, etc.). Thus, the enclosure shall be
located so that maximum measured air speed is 0.25 m/sec (0.56 mph) when
measured at any point 1 m (3 ft) from the outer cabinet surface. The maximum
air speed at this distance shall be recorded and reported.
NOTE: Because wind may be created by the cabinet’s normal operation (e.g.,
cooling methods), it may be necessary to check for excessive air
movement or wind after the test environment is established, but before
the cabinet is activated. If an engine generator is contained within the
cabinet, in order to maintain a safe test environment, it may be necessary
to directly vent the exhaust gases to the outdoors to reduce or eliminate
the need for ventilation that may create significant wind within the test
area.
E. Solar Absorptance
The sun’s rays (solar flux) are partially reflected and partially absorbed by the
cabinet. The amount of heat absorbed is dependent on the solar absorptance
value(s) of the cabinet surfaces. Solar absorptance is related to cabinet color,
gloss, texture, cleanliness, etc. Appropriate initial values of solar absorptance,
A0, shall be provided by the suppliers of the cabinet finish. Absorptance values
typically increase as the cabinet surface and finish ages, and such aged values,
A1, should also be provided by the suppliers of the cabinet finish. In the absence
of the latter information, the aged value for the solar absorptance, A1, shall be
assumed to be that given by the heuristic relation (1+3 × A0)/4. Since it is
recognized that in some cases (e.g., for surfaces with a relatively high value of
A0) the actual aged value for the solar absorptance may be lower than the initial
value, for the present purposes, the effective absorptance Ae shall be assumed
to be the larger of A0 and A1. This procedure shall be applied to determine the
effective absorptance value for each cabinet surface (or subsection), since the
cabinet may possibly include different colors and absorptance values. The
cabinet supplier shall provide the corresponding A0, A1, and Ae information
and support data.
F. Application of Solar Load
For the purpose of identifying or determining the energy absorbing surfaces and
areas, only the gross surface contour characteristics need be considered, i.e.,
local irregularities or features (e.g., ribs, door hardware, or other distinctive
surface characteristics) may be ignored.
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The solar load shall be applied to the roof and the identified worst-case lateral
areas (sides). The lateral area heated shall be contiguous. The lateral surfaces
heated shall be chosen to cause the worst-case temperature rise impact on the
electronic equipment, considering both the cabinet design and the location of
equipment within the cabinet.
NOTE: Clarification of the 753 W/m2 (70 W/ft2): The solar radiation used for
testing Category 1 and 2 equipment is 753 W/m2 (70 W/ft2). The solar
radiation above the earth’s atmosphere is 1350 W/m2 (125 W/ft2). The
irradiance at the surface of the earth is reduced due to the attenuation
and scattering of the atmosphere to 1120 W/m2 (104 W/ft2). The
1120 W/m2 (104 W/ft2) would be applied from a single solar light source
and would shine onto 3 sides on a traditional boxed-shape (hexahedron)
EUT at some angle. The angle reduces the actual W/m2 (W/ft2) on each of
the surfaces. The 1120 W/m2 (104 W/ft2) is only achieved on a surface
when it is perpendicular to the solar source. To simplify the test process
and provide consistent test results, 753 W/m2 (70 W/ft2) is applied using
a minimum of 3 separate solar simulators to a traditional boxed-shape
EUT. For complex shapes, the same 753 W/m2 (70 W/ft2) is applied to all
applicable solar areas.
1. Category 1 Cabinets — Strip Heaters
Strip heaters shall be used to apply the absorbed Solar Loads to the cabinet
top and relevant vertical (lateral) surface areas. The corresponding absorbed
Solar Loads are determined by multiplying the incident solar flux for each
specified surface (or subsection) by its effective solar absorptance value, Ae.
Example: Consider a cabinet of rectangular geometry: 60 in high × 48 in long
(front/rear) × 24 in wide (left/right sides). Assume the top surface (48 in × 24
in) has an initial absorptance value (A0) of 0.7, the front and rear surfaces
(60 in × 48 in) an initial absorptance value of 0.5, and the sides (60 in × 24 in)
an initial absorptance value of 0.6. The corresponding effective (aged)
absorptance values, Ae (equal A1 in this example), are selected to be:
Top: (1+3 × 0.7)/4 = 0.775
Front/Rear: (1+3 × 0.5)/4 = 0.625
Sides: (1+3 × 0.6)/4 = 0.7
The absorbed Solar Load on each relevant surface is then calculated as:
70 W/ft2 × (4 ft × 2 ft) × 0.775 = 434 W (top)
70 W/ft2 × (5 ft × 4 ft) × 0.625 = 875 W (front/rear)
70 W/ft2 × (5 ft × 2 ft) × 0.7 = 490 W (side)
NOTE: For this example, the appropriate vertical surfaces correspond to the
front (or rear) surface plus one side.
The strip heaters shall be selected, located, and installed so as to maximize
heat conducted to the cabinet surface, minimize heat lost to the surrounding
environment, and minimize interference with the cabinet’s cooling methods.
(As a guideline, the heaters should be uniformly distributed, located a
maximum of 12 inches apart and cover less than 10% of the surface.) For
each relevant surface, the variability of the dissipated power density (watts
per inch) between individual strips shall not vary by greater than ±10% of the
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average power density of the heaters applied to that surface when stabilized
at operating power and temperature. The total power applied to each surface
shall be a minimum of the calculated absorbed Solar Load. Strip heaters shall
be operated at a maximum of 75% of their rated value, and at a maximum
dissipated power density of 1.2 W/cm2 (7.5 W/in2) with respect to the cabinet
surface area with which they are directly in contact. The cabinet supplier
shall provide details of strip heater locations, applied power, and mounting
methods, including method of adhesion to the cabinet surface.
2. Category 2 Cabinets — Solar Simulators
One or more full-spectrum solar simulators shall be used to illuminate the
cabinet top and relevant vertical (lateral) surface areas. In order to simulate
the effect of an aged surface, the absorptance of the illuminated surfaces
shall be modified to be equivalent to the effective absorptance Ae, or greater.
Alternatively, the average intensity of the simulated solar flux upon each
illuminated surface of the cabinet may be modified to be a minimum of
753 W/m2 (70 W/ft2) multiplied by the Absorptance Aging Ratio, Ae/A0.
(See the example above for calculating the aged and effective absorptance
values, A1 and Ae.) The Absorptance Aging Ratio may be calculated and
applied on a surface-by-surface basis, or a weighted average for a particular
surface of several subsections may be calculated and applied to each
relevant illuminated surface.
The intensity shall be measured normal to the gross surface contour
illuminated, at a minimum of 6 points per surface. (As a guideline, the points
should be located on a rectangular grid with a maximum grid spacing of
12.0 in.) The intensity of the simulated solar flux shall not be lower than the
average intensity by greater than 15%. The simulated solar flux at one or
more points may be greater than the average intensity by more than 15%;
however, the intensity value used in calculating the average intensity shall be
limited to 15%. Measured solar flux intensity shall include both direct
radiation from the solar simulator and that reflected from the test enclosure.
Reflectors and other devices may be used to adjust the intensity incident
upon the cabinet surface. Care should be taken to minimize long-wave infrared radiation emitted by the test enclosure, the solar simulator(s), and any
devices in the test environment.
The solar simulator shall provide a spectral distribution that reasonably
duplicates that of natural sunlight especially in the visible and near-infrared
portions of the spectrum as indicated in Table 3-5.
Table 3-5 Spectral Distribution of Solar Simulator
Spectral
Region
Wavelength Percentage of
(nm)
Spectrum of
Natural Light
Percentage of Total Spectrum
Required for Solar Simulator
Lower Limit
Upper Limit
Ultra-Violet B
280 – 320
0.45%
Not Required
Not Required
Ultra-Violet A
320 – 400
5.6%
2.0%
7.0%
Visible
400 – 780
50.0%
45.0%
55.0%
Near Infrared
780 – 3000
43.9%
35.0%
53.0%
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Solar flux intensity and spectral distribution of the solar simulators shall be
checked periodically as recommended by the manufacturer, but not less
frequently than every 500 hours of operation or 6 months, whichever
accumulates first. Instrumentation used to measure the solar flux intensity
shall be accurate to within ±10 W/m2 (1 W/ft2) in the spectral region between
320–3000 nm.
NOTE 1: Example of Luminary Fixture and Bulb:
One example of a luminary fixture is the Stonco SVL51000MA-8. One example of
a bulb is the Venture MH 1000W/U/5K. This fixture was chosen because it has the
following desirable features that should be considered when making a selection:
• It provides a reasonably uniform light distribution, due to both its reflector
design and the orientation of the bulb within the fixture.
• It is rectangular in shape, allowing multiple units to be closely placed
together for a larger array of lights and for easy stacking of fixtures for a selfsupporting configuration.
• The back of the fixture is removable allowing access to the bulb mounting,
and to provide additional cooling when the light is operated at high test
temperatures.
• It includes a universal ballast that operates over a choice of voltages.
• It accommodates a 1000 W metal halide bulb, and is suitable for vertical
operation.
In order to optimize the uniformity and intensity of the light, the bulb mounting
location can be moved deeper into the fixture and 12.7 cm (5 in) reflectors can
be added to the perimeter of the lights. The angle of the reflectors and the depth
of the bulb mounting can be adjusted to provide the desired uniformity of the
solar intensity.
The metal halide light has a correlated color temperature of 5000 K that provides
an energy distribution close to natural light. The bulb is also suitable for
universal orientation (horizontal or vertical, base up or down).
NOTE 2: Calibration of Solar Simulator:
An ideal light source will produce a parallel beam of light from a parabolic
reflector that will have a uniform irradiation throughout the beam. For most
possible lighting array choices, the intensity will not be very uniform. Measuring
the intensity on a grid of no more than 30.5 cm (12 in) is acceptable if the average
intensity between the 30.5 cm (12 in) grid is about the same as the desired
intensity, but it is more likely to be much greater or much less depending on the
choice of light fixture and how the grid is aligned with lights. For example, an
array of small lights spaced on a 30.5 cm (12 in) grid will have higher intensity
directly under the light and much less in between. A fixture with the bulb
perpendicular to the face of the light fixture will have an area directly over the
bulb where the intensity is much less than the surrounding area. Also, a fixture
with the bulb mounted parallel to the face of the light fixture will have greater
intensity in the center of the fixture and much less at the perimeter. Given the
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Detailed Requirements
geometry of a typical fixture, a grid spacing of 15.2 cm (6 in) is a better choice to
ensure an overall intensity closer to the desired level.
NOTE 3: Application of Solar Load:
The solar load shall be applied to the roof and the identified worst-case lateral
areas (sides). The heated lateral area shall be contiguous. The heated lateral
surfaces shall be chosen to cause the worst-case temperature rise impact on the
electronic equipment, considering both the cabinet design and the location of
equipment within the cabinet.
G. Allowance for Indoor Testing
In contrast to indoor cabinet testing, outdoor installations may benefit from the
presence of wind and radiation to a sky colder than the indoor test environment.
Therefore, for cabinets that are to be deployed exposed to wind and sky, after
making the adjustment of paragraph C above, the test temperatures may be
reduced by 4°C (7°F).
H. Equipment Test Usage Parameters
The equipment under test is to be populated and configured as described in this
section with any equipment and circuit packs intended for the specific model or
simulated heat loads that will be equivalent to the worst-case heat load for the
series of models. All feeder and support interfaces servicing the equipment shall
be connected and active, or appropriately terminated, if they contribute to the
heat dissipation in the enclosure.
POTS traffic and/or services shall be simulated in a manner that corresponds to
a traffic rate = 6 CCS, or 17% subscriber usage. Broadband, DSL, DS1 services
(HDSL, T1), and other digital interfaces shall be configured based on 100%
subscriber usage. If these interfaces dissipate additional heat, based on how they
are terminated (i.e., NIUs, repeaters, etc.), then 100% of these interfaces shall be
terminated for the test. The terminations shall be actual terminating devices like
those used in actual service, or simulation devices that cause the equipment to
dissipate the same equivalent heat. If the heat dissipated in the equipment is
sensitive to line length, data rate or other variables, then these interfaces shall
be configured in some manner so that at least 50% of the interfaces are
generating maximum heat dissipation within the equipment under test. The
remaining 50% of the interfaces shall be configured to generate heat based on
any convenient configuration of line length, data rates, etc., as specified by the
manufacturer. It is permissible to use simulation techniques such as load
resistors and provisioning firmware to configure the system. Other services and
technologies (including optical and wireless interfaces) shall be configured as
determined by the manufacturer based on maximum heat dissipation. The
specific configuration parameters for the system and all the interfaces shall be
documented in the test report.
I. Test Completion Conditions
The test shall be conducted until steady state conditions are achieved. Steady
state conditions are defined as a maximum variation in internal and ambient
temperatures of 1°C (2°F) over a 1-hour period.
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R3-211 [219] Cabinets or enclosures shall maintain ambient internal temperatures based
on the tests in R3-208 [152] for the environmental class they are expected to provide.
• For cabinets or enclosures that are designed to provide a Class 2 thermal
environment in the areas where electronic equipment is located (including
equipment air intakes), the upper temperature limit shall be 65°C (149°F).
• For cabinets or enclosures that are designed to provide a Class 3 thermal
environment in the areas where electronic equipment is located (including
equipment air intakes), the upper temperature limit shall be 70°C (158°F).
NOTE: These limits do not apply in spaces where electronic equipment will
not be located.
NOTE: For equipment that has integrated electronics and complies with the
thermal criteria for equipment in GR-3108-CORE, Class 4 environments,
this criteria is not required.
CR3-212 [153] Some customers require that the cabinet be tested to R3-208 [152] without the
application of solar loading for cabinet applications where direct exposure to
sunlight will not be encountered.
CR3-213 [154] Some customers require that the cabinet manufacturer provide information
regarding the rate of temperature rise — under the solar conditions, loads, and
conditions as specified in R3-208 [152] — in the event that the cabinet active cooling
system becomes disabled.
Test Procedure — The procedure outlined in R3-208 [152] shall be followed. After
temperature stabilization is achieved, the active cooling system (e.g., fans) shall be
partially or totally (as specified by customer) disconnected and the internal cabinet
temperature plotted versus time until maximum or new steady-state conditions, or
allowable component or location temperatures, are reached.
3.30 Thermal Shock
R3-214 [155] The mechanical features of a test cabinet, e.g., door hinges, restrainers, and
bracket/shelf fastenings, etc., shall continue to function properly after a 144-hour
exposure to a Thermal Cycle test.
R3-215 [255] The adhesives used on seals and gaskets shall maintain adhesive qualities,
including no visible indication of movement, and function properly after exposure
to environmental extremes and other shocks.
Test Procedure — A cabinet shall be placed in an environmental test chamber and
subjected to nine, 16-hour cycles from 21°C (70°F) to 60°C (140°F) to -40°C (-40°F)
and return to 21°C (70°F), as indicated in Figure 3-5. Each temperature extreme
shall be maintained for a period of 4 hours and changes between temperature
extremes shall be accomplished in 4 hours. After 72 hours, while the test chamber is
at room temperature, the cabinet doors shall be opened and closed using normal
procedures – 20 times fully closed and key locked. The cabinet shall be removed
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from the test chamber at the conclusion of the test period and, after stabilizing at
room temperature, shall be re-checked for any deterioration of the following
materials and/or mechanical features:
• Gaskets/seals (physical)
• Gaskets/seals adhesive
• Gaskets/seals alignment
• Gaskets/seals shifting
• Door-hinge operation
• Door-locking mechanism
• Door-handle operation
• Door alignment
• Cabinet panel-seam distortion
• Louver-panel distortion
• Door-restrainer operations
• External condition of overall cabinet.
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Temperature vs. Time
60oC
21oC
2
4
6
8
10
12
14
16
Hours
-40oC
Figure 3-5. Temperature Cycle — Thermal Shock
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3.31 Water and Dust Intrusion, and Water Resistance
Water resistance is required for all cabinets. The degree to which a cabinet provides
resistance to water intrusion is dependent on the deployment conditions.
Below-grade cabinets that are designed to be flood resistant shall be subjected to the
Water Immersion test. There is a risk of long-term submersion of below-grade
cabinets. However, it is not recommended that below-grade cabinets be installed in
a flood-prone area.
Prior to conducting Water and Dust Intrusion, and Water Resistance tests,
the test samples shall be subjected to the Thermal Shock test of
Section 3.30.
If the Water Intrusion test for below-grade cabinets (CR3-218 [256]) is performed
and successfully passed, then compliance with the following requirements are also
deemed to have been met:
• R3-216 [156], “Wind-Driven Rain,”
• R3-217 [159], “Rain Intrusion,”
• CR3-219 [257], “Water Intrusion Flood-Prone Areas,”
• R3-220 [220], “Lawn Sprinklers,”
• R3-221 [158], “Weathertightness.”
3.31.1 Wind-Driven Rain
R3-216 [156] Cabinets shall prevent water intrusion after exposure to a simulated WindDriven Rain test. This test shall be conducted on the same cabinet used for the
Thermal Shock test (R3-214 [155]) and shall be conducted immediately following
that test. There shall be no evidence indicating that water may come in contact with
the cabinet electronics. The maximum total accumulation of water in the cabinet
shall not exceed 1 cm3 (1 gram of water) per 0.028 m3 (1 ft3) of cabinet volume.
NOTE: This requirement does not apply to the battery compartment. For the
battery compartment, R3-150 [118] applies.
Test Procedure — This test shall be performed in accordance with
MIL-STD-810F,[71] Method 506.3, Procedure 1, using the following test parameters:
• All fans shall be in operation and any dampers shall be open
• Rainfall Rate — 15 cm/hr (5.8 in/hr)
• Wind Velocity — 31 m/sec (70 mph)
• Cabinet volume shall be based on overall outside dimensions.
The simulated wind shall be directed horizontally to blow through the water spray
and drive it against the surfaces of the cabinet. The cabinet shall be rotated so that
each surface is exposed for 30 minutes. The doors shall then be opened, one at a
time, and the interior shall be examined.
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See Appendix A.2, “Wind-Driven Rain Test Set-Up Calibration Suggested
Procedure,” for this calibration procedure. Wall-mounted cabinets are only tested on
the sides that can be exposed to rain; therefore, normally the side facing/secured to
the wall is not tested. It is recommended for all Water Exposure tests that water
detection spray or other means shall be used to determine if sensitive components
are exposed to water.
3.31.2 Rain Intrusion
R3-217 [159] Cabinets shall be protected against water intrusion during heavy rain storms.
The cabinet shall include provisions so that water on cabinet surfaces and doors is
properly channeled or drained to prevent water running into the cabinet interior
when doors are opened following the rain storm. After exposure to a simulated rain
test, there shall be no evidence indicating that water may come in contact with the
cabinet electronics. The maximum total accumulation of water in the cabinet shall
not exceed 1 cm3 (1 gram of water) per 0.028 m3 (1 ft3) of cabinet volume.
NOTE: This requirement does not apply to the battery compartment. For the
battery compartment, R3-150 [118] applies.
Test Procedure — The cabinet shall be mounted at the maximum allowable offlevel angle per the manufacturer’s recommended installation instructions, with the
lower end tilted towards a side with door(s), if present. For Test A, the cabinet shall
be tilted in the length-wise direction; and for Test B, in the width-wise direction.
(If such maximum allowable tilt angles are not specified, a minimum angle
corresponding to 1 inch per 5 feet shall be used.) All cabinet fans and other cooling
systems shall be in operation during these tests and any dampers shall be open.
Spray-head piping as described in UL 50E,[74] Figures 1 and 2, shall be used. The
central spray head shall be positioned 1.8 m (6 ft) from the point of contact and the
pressure at each spray head shall be maintained at 207 kPa (30 psi).
All doors shall be opened and closed 10× prior to beginning this test procedure. The
water spray heads shall be positioned so that water contacts all seams, door
openings, hinges, handles, locking mechanisms, louvers, etc., on all sides of the
cabinet.
The following two tests shall be conducted:
• Test A: Side-Rain Exposure
— For Test A, the direction of the spray shall be downward at a 45-degree angle
from the horizontal. The cabinet shall be rotated so that each surface is
exposed for 30 minutes.
• Test B: Overhead-Rain Exposure
— For Test B, the top of the cabinet shall be sprayed for 30 minutes. The doors
shall then be opened, one at a time, and the interior shall be examined. Only
one top-down exposure is required.
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3.31.3 Water Intrusion for Below-Grade Cabinets
CR3-218 [256] If required by a service provider, this conditional requirement applies to
cabinets that are intended to be installed in a below-grade application and to protect
against water intrusion during heavy rain storms that may flood a handhole. The
cabinet shall include provisions so that water on cabinet surfaces and doors is
properly channeled or drained to prevent water from running into the cabinet
interior when doors are opened following the rain storm in its above-grade
maintenance position. After exposure to a Water Immersion test, there shall be no
evidence indicating that water may come in contact with fiber or electronic
components. The maximum total accumulation of water in the cabinet shall not
exceed 1 cm3 (1 gram of water) per 0.028 m3 (1 ft3) of cabinet volume.
Test Procedure — The cabinet shall be mounted per the manufacturer’s
recommended installation instructions in a handhole in the below-grade stored
position. The cabinet with OSP cables installed shall withstand a 3-foot aboveground-level waterhead from the highest point of the handhole for 7 days.
The test can also be conducted by placing the cabinet in a test container filled with
water. The container must allow for 1 inch of water on the sides and bottom of the
cabinet. To determine the height of the water level, measure the top of the cabinet
to the top of the handhole when the cabinet is in the stored position. As an example,
assume that the measurement is 2 feet from the top of the cabinet (while in its stored
position) to the top of the handhole. To obtain the required 3-foot waterhead above
the grade level, the cabinet would be placed in the test container with a 5-foot (2 feet
from the top of the cabinet to the top of the handhole, plus the 3-foot waterhead
requirement) waterhead above the top of the cabinet in the stored position. If the
installation depth of the cabinet is not known, then test with a worst-case 10-foot
waterhead above the top of the cabinet.
3.31.4 Water Intrusion Flood-Prone Areas
CR3-219 [257] If required by a service provider, this conditional requirement applies to
cabinets intended to be installed in flood-prone areas. The cabinet shall include
provisions so that water on cabinet surfaces and doors is properly channeled or
drained to prevent water from running into the cabinet interior when doors are
opened following the rain storm in its above-grade maintenance position. After
exposure to a Water Exposure test below, there shall be no evidence indicating that
water may come in contact with fiber or electronic components. The maximum total
accumulation of water in the cabinet shall not exceed 1 cm3 (1 gram of water) per
0.028 m3 (1 ft3) of cabinet volume.
Test Procedure — The cabinet shall be mounted per the manufacturer’s
recommended installation instructions. The cabinet with OSP cables installed shall
withstand a 3-foot above-ground-level waterhead from the bottom of the cabinet for
1 day.
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3.31.5 Lawn Sprinklers
R3-220 [220] Cabinets shall prevent water intrusion after exposure to a simulated lawn
sprinkler test. There shall be no evidence indicating that water may come in contact
with the cabinet electronics. The maximum total accumulation of water in the
cabinet shall not exceed 1 cm3 (1 gram of water) per 0.028 m3 (1 ft3) of cabinet
volume.
NOTE: This requirement does not apply to the battery compartment. For the
battery compartment, R3-150 [118] applies.
Test Procedure — The procedure outlined in R3-217 [159], Test A, should be
followed, but the direction of the spray should be upward at a 45-degree angle from
the horizontal.
3.31.6 Weathertightness
R3-221 [158] Cabinets shall be made weathertight, with appropriate seals of rubber or
other polymeric type materials on door edges, around door hinges, door handles,
door locks, and other potential openings to exclude wind-driven dust or snow.
Cabinets shall be exposed to wind-driven dust. Dust accumulations indicated by any
of the dust collectors shall not exceed that of sample 2 of the Observational
Standard for Evaluating Dust Accumulation, Figure A-1. (For the battery
compartment, the dust accumulations shall not exceed that of sample 6.)
Test Procedure — The test cabinet shall be prepared and tested as follows:
• All cabinet fans and other cooling systems shall be in operation during these
tests and any dampers shall be open.
• Appropriate respiration protection shall be used.
• Cabinet doors shall be opened and closed 50× prior to exposure.
• Dust collectors shall be located in the horizontal plane immediately inside the
cabinet at all locations where dust entry is possible, e.g., immediately inside
cabinet doors at each side and at the mid-point, and at any vents. (For the battery
compartment, the dust collectors shall be placed on top of the batteries.)
• The dust collectors shall consist of 1.3 cm (½ in) thick, 2.5 cm × 2.5 cm
(1 in × 1 in) black conductive foam pads. These pads can be made from black,
conductive, high density, polyurethane foam sheets, Part No. W2754, available
from Wescorp (+1.415.969.7717), 144 South Whisman Road, Mountain View,
CA 94041, or equivalent.
• The cabinet shall be centrally located in a test chamber of sufficient size to
provide a minimum of 46 cm (18 in) of clearance on all sides of the cabinet. The
test chamber shall be sufficiently tight to contain the injected dust cloud. A
minimum of 0.9 kg (2 lbs) of 325 mesh white hydrated alumina silicate, or
equivalent, shall be blown into the chamber at an entrance velocity of 27 m/sec
(60 mph) minimum. The dust shall be blown against the front or rear cabinet
door, and against an adjacent side of the cabinet containing vents. The dust shall
be blown against the door and side with the most apparent vulnerability to dust
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penetration. Half of the dust shall impact the center of the cabinet door (not
directly on the gasketed area), allowing the cabinet surface to disperse the dust,
and half shall impact the cabinet side (not directly on the vented area). For
cabinets constructed without vents on any adjacent side, the full quantity of dust
shall be blown against the door with the most apparent vulnerability to dust
penetration.
• The total amount of dust shall be injected and blown over a 30-second period.
After that, the blower shall be kept on for 90 seconds.
• After 1 hour of settling, the dust collectors shall be retrieved and placed in a
closed box to protect them from loss of collected dust.
• The dust collectors shall be visually compared to the Observational Standard for
Evaluating Dust Accumulation, Figure A-1. The test report shall note the
location in the test sample and rating of each dust collector.
• The test shall then be repeated with all cabinet fans and other cooling systems
not in operation; any dampers shall be open, if appropriate under such nonoperational conditions.
NOTE: Use of proper respiratory protection, eye safety, and ventilation
safety procedures shall be followed.
3.32 Acoustical Noise Emissions
R3-222 [157] Cabinets equipped with telecommunications equipment and associated
cooling fans shall suppress acoustical noise to a level of less than 65 dBA
at every measurement point at a distance of 1.5 m (5 ft) from the cabinet with the
doors closed during times of maximum noise generation within the cabinet.
Measurements are made via sound pressure.
NOTE: For cabinets with a permanent generator, this criterion shall be met
with the generator not running. With the generator running, the
acoustical noise level shall be less than 75 dBA.
Test Procedure — The sound level shall be measured by a sound-level meter that
meets ANSI S1.4,[32] and set to the A-weighting scale and the slow meter response
setting. Measurements shall be made in accordance with ANSI S1.13.[33] For the
duration of this test, all equipment fans and any other noise producing equipment
shall be operating so that the maximum noise possible is being produced within the
cabinet. Cabinet doors shall be closed. Sound levels produced shall be measured at
1.5 m (5 ft) from the cabinet surfaces in all horizontal directions at a height of 1 m
(3 ft) from the cabinet mounting surface. The background noise must be at least 10
dBA below the measured noise. It is preferred that measurements are made with the
cabinet at least 3 feet from all walls within the test room or test chamber.
See Figure 3-6.
NOTE: If background noise is not less than 10 db below the measured noise,
and conformance with R3-222 [157] is met, the enclosure still complies.
However, the noise measurement may read higher than what is actually
produced.
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Figure 3-6. Acoustic Noise
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3.33 Conditional Noise Requirements
CR3-223 [258] Some customers will require a reduced-noise requirement of 45 dB measured
at a distance of 5 feet.
Continue to measure or calculate cabinet noise every 5 feet until a distance of 25 feet
is reached. This may be calculated as shown below. The reference measurement
shall be 5 feet or greater to use the formula.
The Sound Pressure Level (SPL) or Lp is defined as
2
p
p
Lp = 10 Log10  ------------- = 20 Log10  ----------
 p ref 2
 p ref
dB
where p is the root-mean-square sound pressure and pref is a reference sound
pressure. Commonly used reference sound pressures, defined in the standard
ANSI S1.1,[31] are 20 µPa in air and 1 µPa in water. Without a specified reference
sound pressure, a value expressed in decibels cannot represent a sound pressure
level.
NOTE: The above formula shall not be applied to distances less than 5 feet.
3.34 Wind Resistance
Depending on the geographic location of a cabinet, exposure to high wind speed
wind gusts is often a threat. It is important that cabinets are capable of withstanding
these wind gusts without failure. Although actual wind speeds will depend on the
terrain, local topography, and height above ground level, ANSI/ASCE 7-95[34]
indicates that wind gusts of approximately 67 m/sec (150 mph) may be anticipated
at a 50-year recurrence interval (annual probability of 0.02) for some parts of the
United States.
Both pole- and pad-mounted cabinets shall resist overturning in the event of severe
winds. For informational purposes, the following are generally accepted storm
ratings:
• Tropical Depression — maximum sustained surface wind speed of 38 mph or
less
• Tropical Storm — maximum sustained surface wind speed of 39 mph to 73 mph
• Hurricane per Saffir-Simpson Scale:
— Category One — winds of 74-95 mph
— Category Two — winds of 96-110 mph
— Category Three — winds of 111-130 mph
— Category Four — winds of 131-155 mph
— Category Five — winds greater than 155 mph.
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R3-224 [122] Unbalanced forces may be applied to pole- or wall-mounted cabinets resulting
in a turning moment. Such unbalanced forces may result from a non-uniform wind
pressure due to partial sheltering effects. Pole- or wall-mounted cabinets shall be
capable of resisting the turning moment resulting from a 67 m/sec (150 mph) wind
gust acting on half of the front or rear cabinet surface, without damage to the
mounting hardware.
Test Procedure — A pole- (single- or two-pole mount) or wall-mounted cabinet,
mounted per the manufacturer’s recommended installation instructions, shall be
subjected to a force P, applied by means of an adapter bracket, as necessary, as
shown in Figure 3-7. The force shall be applied in both the forward and opposite
direction, in turn. For this purpose, the cabinet shall include all equipment, including
that placed after installation (e.g., batteries, circuit packs, etc.). The force shall be
applied by means of a tensioning device (e.g., winch coupled with a force meter) and
shall be maintained for a minimum of 5 seconds, in each direction. The time to fully
achieve the peak force P shall not be less than 30 seconds.
For all tests, appropriate care should be taken when moving large cabinets to ensure
that they do not fall or injure personnel during testing.
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Detailed Requirements
W
Figure 3-7. Application of Force to Pole-Mounted Cabinet
The force P is calculated as follows:
P = 0.10 WH
where,
P = force, lbs
W = cabinet width, inches
H = cabinet height, inches.
In no case shall the applied force be less than 100 lbs.
R3-225 [160] Pad-mounted cabinets shall be capable of resisting the overturning moment
resulting from a wind gust of 67 m/sec (150 mph) perpendicular to the largest
vertical surface area, without damage to the base or mounting hardware.
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Generic Requirements for Electronic Equipment Cabinets
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Test Procedure — A cabinet, mounted per the manufacturer’s recommended
installation instructions, shall be subjected to an overturning moment, m, by the
application of a horizontal force, P, perpendicular to the cabinet’s largest vertical
surface, as shown in Figure 3-8. The force shall be applied in both the front and rear
directions, in turn. For this purpose, the cabinet shall only include the equipment
present at time of initial installation (i.e., excluding batteries, circuit packs, etc.) The
force shall be applied at a height, Y, 6 inches below the top of the cabinet (or at any
convenient height) by means of a tensioning device (e.g., winch coupled with a force
meter) and shall be maintained for a minimum of 5 seconds, in each direction. The
time to fully achieve the peak force P shall not be less than 30 seconds.
For all tests, appropriate care should be taken when moving large cabinets to ensure
that they do not fall or injure personnel during testing.
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Figure 3-8 Overturning Moment Applied to Pad-Mounted Cabinet
The force P is calculated as follows:
P = m/Y
and
m = 0.20 WH2
where,
P = force, lbs
m = overturning moment, in-lbs
W = cabinet width, inches
H = cabinet height, inches
Y = height of applied force P, inches.
In no case shall the applied moment, m, be less than 200 × H in-lbs.
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3.35 Impact Resistance
R3-226 [161] The cabinet shall not exhibit any fractures, mechanical damage, or
impairment regarding the functioning of hinges, latches, locks, shelving, heat
exchanger, etc., when subjected to the required impact loads.
Test Procedure — The cabinet shall be subjected to an impact of 100 ft-lbs
delivered to each of the unique vertical and top surfaces. In the case of circular
cabinets, the impact shall be delivered 180° apart and shall also include the top
surface. A 7.3 kg (16 lbs), 21.6 cm (8-1/2 in) diameter, hard rubber ball (such as a
bowling ball) shall be used to apply the impact. The roof of the cabinet shall be
impacted by dropping the ball from a height of 1.9 m (6-1/4 ft) from the roof surface.
For the vertical surfaces, the ball shall be suspended from a line to form a pendulum
[approximately 2.4 m (8 ft) from center of ball to pivot point]. The pendulum shall
be positioned so that the ball rests against the vertical wall when the pendulum is at
rest. The ball shall then be pivoted until it is raised 1.9 m (6-1/4 ft) vertically from its
position at rest and then released.
For small cabinets less than 8 cubic feet in size, a 10 ft-lb impact shall be applied
using a steel sphere 50 mm (~2 in) in diameter and having a mass of 0.5 kg (~1.1 lbs).
Metallic surfaces of the cabinets shall be tested at room temperature. Cabinets with
non-metallic surfaces shall be conditioned for a minimum of 8 hours at -29°C
(-20°F) in an environmental chamber prior to testing. The cabinet shall then be
removed and the non-metallic surfaces tested at room temperature within
10 minutes after removal. Non-metallic surfaces shall also be tested following
conditioning for a minimum of 8 hours at 65°C (149°F).
3.36 Firearms Resistance
This test shall be conducted only by personnel trained in the safe use of firearms and
in a safe location.
R3-227 [162] Cabinets shall be capable of withstanding a 12-gauge shotgun blast without
penetration of the cabinet wall by any pellets.
Test Procedure — The cabinet, or a test panel of the same material and thickness
as the cabinet’s surface, shall be subjected to a blast from a 2-3/4 inch, maximumload, 12-gauge shotgun shell fired from a 28-inch modified choke barrel. A 1-ounce
or 1-1/8 ounce (as available) load, No. 6 steel shot load shall be fired at a distance of
15m (50 ft) measured from the end of the gun barrel perpendicular to the cabinet’s
vertical surface or test panel, where
— 2-3/4 inch = length of shot shell
— Maximum load = universal measure of gunpowder load within shot shell
— 28 inch = length of modified choke shotgun barrel
— 1 ounce (or 1-1/8 ounce) = weight of steel shot load within shot shell
— No. 6 = size of steel shot (2.79-mm or 0.110-inch diameter).
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GR-487-CORE
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Detailed Requirements
CR3-228 [163] Some customers shall require additional bullet resistance. The customer will
specify the level of resistance and performance desired.
Typical customer requirements may be
• Resistance to a 22-caliber long rifle bullet, hollow point or standard lead round
nose, fired at a distance of 15 m (50 ft)
• Resistance to a 30-06 caliber, 180 grain sharp-nosed soft point bullet fired at a
distance of 46 m (50 yards).
3.37 Fire Resistance
The Fire Resistance (Brush-fire) test in this section is intended to provide a Fire
Resistance test to ensure that the pad-mount or large pole-mount cabinets are able
to remain in service and protect the equipment inside so that minimal service and
repair is required to bring these cabinets back on line. It is recognized that smaller
types of pole- or structure-mounted equipment may be damaged beyond field repair
and will require complete replacement. Small pole- or structure-mounted equipment
and enclosures such as some ONUs, repeater housing, sealed DSLAMs, apparatus
cases, etc., do not need to be subjected to the test as they are considered disposable
if a brush fire occurs.
R3-229 [164] Cabinets shall maintain internal temperatures that preclude ignition of the
intended equipment inside when subjected to the simulated Brush Fire test.
Following testing, there shall be no evidence that would suggest ignition, melting, or
burning of internal equipment or a component sufficient to impair field service of the
cabinet, including all components that are part of the cabinet product itself. Service
for these requirements is defined as the ability of a field technician to be able to
work on the cabinet and bring it back on line, and is not intended to mean telephony
service. Exterior painted finishes may be blistered, peeled, or burned off.
For fire resistance, pad-mounted and pole-mounted units shall be secured directly
using the hardware provided or recommended by the manufacturer. Pad-mounted
units are directly mounted to a secure surface, while pole-mounted units are on a
pole with the bottom of the cabinet 2 feet off the ground. Small cabinets shall be
mounted at 2 feet or at a height specified by the manufacturer. The pole shall be a
steel pole that is 9 inches in diameter and 1/2 inch thick that is welded to a steel
flange that will mount to a secure surface.
Sample Preparation — Pad-mounted samples should be floor-mounted.
Pole-mounted units shall be mounted on a pole (with a metal plug installed in place
of conduit) at a height of 2 feet and dry wheat straw placed under the cabinet. Small
cabinets shall be mounted at 2 feet or at the minimum installation height specified
by the manufacturer. The cabinet, including all components that are part of the
cabinet product itself, shall be installed in accordance with the instructions
provided by the manufacturer.
The cabinet shall be tested for fire resistance as deployed. Batteries are not to be
included for the Fire Resistance test.
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Generic Requirements for Electronic Equipment Cabinets
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Detailed Requirements
Test Procedure — Dry wheat straw shall be placed on the ground loosely packed
around the cabinet base for a distance of 1 m (3 ft) from all vertical surfaces, and at
a minimum depth of 10 cm (4 in). The straw shall be placed at a rate of
1.5 lbs/ft2, at a uniform depth around the cabinet. The straw shall be removed from
its bale, loosened from its compacted condition, placed on the ground around the
enclosure, and re-compacted by hand to the specified depth. The straw shall be
placed in uniform depth around the cabinet. This final depth may be achieved by
controlling the density of the loose straw, using a temporary manual compaction
process, as necessary. The straw shall be ignited on the up-wind side of the
perimeter at three locations (0, +45, and -45 degrees) within a 20-second time frame,
so that the fire advances toward the cabinet and all sections of the straw be lit. The
straw shall be permitted to burn fully. If necessary, to promote complete
combustion, partially burned straw may be carefully stirred during the burn.
NOTE: Cabinet cooling fans shall be in operation during this test.
The test shall be conducted under the following conditions:
• Temperature: 15°C (60°F) or above
• Humidity: 10% to 90% RH (relative humidity)
• Wind: Not to exceed an average of 10 mph.
Results Analysis — Photographs and/or a video shall be made showing the initial
installation (inside and outside), placement of the straw, and ignition of the straw
and the actual burning. Upon cooling, the cabinet, including all components that are
part of the cabinet product itself shall be inspected. Photographs and/or a video shall
be taken of the inside and the outside. Following testing, there shall be no evidence
of ignition, melting, burning, or structural damage sufficient to impair equipment
service. The intent is to acknowledge that interior components are still functional
and undamaged, but exterior components that are readily serviceable, (e.g., gaskets,
filters, etc.) may be damaged and replaced.
It is acceptable if components are damaged provided they are field-replaceable.
CR3-230 [259] Some customers may want to test a cabinet configured with a typical field
installation. Any equipment in the cabinet shall not ignite during this test. The
equipment internal to the cabinet need not work during or after the test. Following
testing, there shall be no evidence of ignition, melting, or burning sufficient to impair
field service of the cabinet, including all components that are part of the cabinet
product itself. Service for these requirements is defined as the ability of a field
technician to be able to work on the cabinet, and is not intended to mean telephony
service.
NOTE: The equipment inside the cabinet shall not provide structural support
to bias the results of the test. Use the test procedure from R3-229 [164],
with the exception of “Sample Preparation.” For this section, use the
method below.
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GR-487-CORE
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Detailed Requirements
Sample Preparation — A test cabinet shall be installed in the standard field
arrangement. All cables shall be installed per the installation instructions. If
electronics are provided, actual electronics shall be used or cards that simulate the
size and weight of the cards shall be installed. Electronic cards do not need to be
operational for this test.
Batteries are not included in this test.
3.38 Corrosion Resistance
3.38.1 Salt Fog
R3-231 [165] All cabinet components shall be resistant to corrosion and all mechanical
features (e.g., cabinet surfaces, gaskets, seals, hinges, locking mechanisms, door
alignment and restrainers) shall continue to function and operate satisfactorily after
exposure to salt fog for 30 days. Cooling fans shall operate for a minimum of 14 days
during this exposure. Fans exposed for 30 days, while idle, shall operate for a
minimum of one hour when powered after exposure. Following Test Procedure (a),
there shall be no visible evidence of general corrosion as defined in the bullet list
below, or various forms of local corrosion, including stress corrosion, cracking, and
pitting, exclusive of any surface scratches or nicks noted prior to testing. A steel
cabinet and stainless-steel hardware shall have a rust grade of 9 or better per
ASTM D 610.[49] Following the salt-fog exposure:
• Any materials that show any signs of corrosion shall be washed and scrubbed
with warm water and a nylon brush.
• For red rust, review ASTM D 610[49] and the material shall have a rust grade
rating of 9 or better. The intent of the review is to determine pitting of the base
metal.
• For white corrosion, the same rust grade rating of 9 or better shall be met.
NOTE: The white powder residue is a function of the surface treatment
sacrificing itself to protect the base metal. White powder residue itself is
not a sign of failure. Metal staining is not considered a sign of corrosion
or failure, but shall be noted in the test report if staining is found on the
exterior surface of the cabinet.
• For all materials there shall be no corrosion that would affect the function or
integrity of the cabinet.
If the cabinet is made of non-metallic material, there shall be no signs of
degradation. (Mounting hardware meeting R3-14 [34] is excluded from this
requirement.)
Test Procedure
a. The entire cabinet shall be placed in an environmental test chamber and exposed
to a salt fog spray for 30 days, consistent with GR-2836-CORE[22] and in
accordance with ASTM B 117.[42] Fans used to circulate outside air (i.e., heatexchanger fans) shall be in operation during this exposure. If any of the fans fail
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prior to 14 days, the time to failure shall be noted. At the end of the test period,
the cabinet shall be removed from the chamber, thoroughly washed and
scrubbed with warm water and a nylon brush, and examined internally and
externally for corrosion and physical damage.
b. Fans used to circulate outside air (i.e., heat-exchanger fans) shall be exposed to
salt fog as described above while idle for 30 days. The fans may be either
mounted in the cabinet or oriented as they would be in the cabinet during this
test period. After the 30-day period, the fans shall be removed from the salt fog
chamber and shall be energized. The fans shall operate at a rated speed for a
minimum of 1 hour after this exposure. Time to failure, if less than 1 hour, shall
be noted.
NOTE: Excessive salt build-up may cause rotor lock. It is acceptable to clean
away the salt deposit (i.e., rinsing with warm water) in order to continue
the latter test procedure.
3.38.2 Temperature Cycling/High Humidity
R3-232 [166] All cabinet components shall be resistant to corrosion and all mechanical
features (e.g., cabinet surfaces, gaskets, seals, hinges, locking mechanisms, door
alignment and restrainers) shall continue to function and operate satisfactorily after
exposure to temperature cycling and humidity. At the end of the test period, the
cabinet shall be examined internally and externally.
Following the humidity conditioning, there shall be no visible evidence of general
corrosion as defined in the bullet list below, or various forms of local corrosion,
including stress corrosion, cracking, and pitting, exclusive of any surface scratches
or nicks noted prior to testing. A steel cabinet and stainless-steel hardware shall
have a rust grade of 9 or better per ASTM D 610.[49] Following the humidity
exposure:
• Any materials that show any signs of corrosion shall be washed and scrubbed
with warm water and a nylon brush.
• For red rust, review ASTM D 610[49] and the material shall have a rust grade
rating of 9 or better. The intent of the review is to determine pitting of the base
metal.
• For white corrosion, the same rust grade rating of 9 or better shall be met.
NOTE: The white powder residue is a function of the surface treatment
sacrificing itself to protect the base metal. White powder residue itself is
not a sign of failure. Metal staining is not considered a sign of corrosion
or failure, but shall be noted in the test report if staining is found on the
exterior surface of the cabinet.
• For all materials there shall be no corrosion that would affect the function or
integrity of the cabinet.
(Mounting hardware meeting R3-14 [34] is excluded from this requirement.)
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Detailed Requirements
Test Procedure — The cabinet shall be placed in an environmental test chamber
and subjected to forty 12-hour cycles from 4.4°C (40°F) to 60°C (140°F) and return
to 4.4°C (40°F), as indicated in Figure 3-9. Each temperature extreme shall be
maintained for a period of 3 hours. A relative humidity of 90-95% shall be maintained
for temperatures below 32°C (90°F). At temperatures above 32°C (90°F), the relative
humidity may be limited to that corresponding to a specific humidity of 0.024 kg of
water per kg of dry air. During the period of descending temperatures, i.e., 32°C
(90°F) to 4.4°C (40°F), the relative humidity shall be 80-95%.
R3-233 [260] The adhesives used on seals and gaskets shall maintain adhesive qualities,
including no visible indication of movement, and function properly after exposure
to environmental extremes and other shocks.
Temperature vs. Time
60oC
4.4oC
3
6
9
12
Hours
Figure 3-9. Temperature Cycle — Temperature Cycling/High Humidity
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3.39 Shock and Vibration
3.39.1 Transportation Shock
R3-234 [167] A packaged cabinet, with contents as normally packaged for shipment, shall
withstand without damage the Handling Drop tests outlined in GR-63-CORE,[4]
Section 5.3.1. Damage shall be limited to that which would not impair proper
installation or the functioning of door hinges, locks, or internal components.
3.39.2 Transportation Shock (Rail)
CR3-235 [168] If required by the user (customer), packaged equipment weighing more than
91 kg (200 lbs) and intended for shipment by rail shall withstand the impact loads
resulting from railroad car coupling. Damage shall be limited to that which would
not impair proper installation or operation of the equipment.
R3-236 [261] The adhesives used on seals and gaskets shall maintain adhesive qualities,
including no visible indication of movement, and function properly after exposure
to environmental extremes and other shocks.
Test Procedure — A packaged cabinet, with contents as normally packaged, shall
be mounted to the surface of a horizontal shock machine and subjected to one
7 g, 30 ms half-sine pulse on each face that might be perpendicular to the
longitudinal axis of a railroad car during shipment by rail.
3.39.3 Transportation Vibration— Packaged Environment
Rationale — The tests in this section simulate the vibrational stresses that can be
seen by packaged equipment during shipping. This section provides two test
methods that are considered equivalent. Equipment that complies with
GR-63-CORE,[4] Sections 4.4.5 and 5.4.3, meets R3-237 [169]. In approximately 2001
or 2002, Telcordia reviewed the cause of damage that occurred during
transportation to equipment that complied with GR-63-CORE, Issue 2. The root
cause of these failures of the electronic equipment was traced to damage caused by
“vibration” during transportation. The sinusoidal vibration test procedures
described in earlier versions of GR-63-CORE were found not to simulate the
particular failure mechanisms seen by Telcordia and many manufacturers. The
random test method of ASTM D 4169[58] was found to more accurately simulate
actual vibrational effects as a result of transportation. This ASTM procedure was
incorporated into GR-3108-CORE,[25] Issue 1. GR-63-CORE[4] was reissued and
adopted the test in ETSI 300-019-2-2 V2.1.1.[66]
Conformance to GR-3108-CORE,[25] Section 6.2.3, is acceptable to demonstrate
conformance.
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R3-237 [169] Packaged equipment shall withstand the loads applied by simulated
transportation vibration, per ETSI EN 300 019-2-2,[66] T2.3 Public Transportation,
Random Vibration test, with a 30-minute test per axis (used in GR-63-CORE[4]). This
exposure shall not result in any functional degradation of the equipment or physical
damage to, or loosening of, component parts. Upon completion of the test, any
voltage breakdown tests performed on the equipment before shipment must be
repeated to verify that no degradation occurred.
The Transportation Vibration test, per ASTM D 4169[58] Section 12.4, using the
Random Test Option, with Level 1 or Level 2 (Truck and Air) test vibration pattern
on all three axis for 1 hour (60 minutes) on each axis for a total test time of 3 hours
(180 minutes), is an acceptable alternative to performing the ETSI EN 300 019-2-2[66]
and GR-63-CORE[4] tests (described above). Testing below 5 Hz is not required.
3.39.4 Installation Shock
R3-238 [170] An unpackaged cabinet, with contents as normally packaged, shall withstand
the installation drop tests outlined in GR-63-CORE,[4] Section 5.3.2. Damage shall be
limited to that which would not impair proper installation or the functioning of door
hinges, locks, or internal components. Upon completion of the test, any voltage
breakdown tests performed on the cabinet before shipment must be repeated to
verify no degradation occurred.
3.39.5 Environmentally Induced Vibration
R3-239 [171] Cabinets equipped with operating electronics and equipment shall withstand
the loads resulting from local environmental conditions without suffering electronic
malfunction, mechanical damage, or loosening of component parts. For this
purpose, the Office Vibration test procedure outlined in ETSI EN 300 019, 1-4
V2.1.2[65] stress levels using random vibration protocols for DS/EN 60721-3-4+A1[62]
mechanical Class 3M5 locations. The cabinet supplier shall provide the required
operating characteristics for the housed electronics after exposure to this test.
For earthquake and environmental vibration, pad-mounted and pole-mounted units
shall be secured directly using the hardware provided or recommended by the
manufacturer. Pad-mounted units are directly mounted to the vibration table, while
pole-mounted units are mounted on a pole with the bottom of the cabinet 2 feet off
the vibration table or at the minimum installation height specified by the
manufacturer. The pole shall be a steel pole that is 9 inches in diameter and
1/2-inch thick that is welded to a steel flange that will mount to the vibration table.
Wall-mounted units are to be secured to a simulated wall constructed of steel or
aluminum, which is directly mounted to the vibration table.
NOTE: A hybrid wood-steel pole shall be used when mounting to or into a
wooden pole is an integral part of a pole-mount securing method. Such a
pole could consist of a 6-inch square tube, ½-inch steel walls, with a
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1-inch deep wood interface or other, as determined by the cabinet
manufacturer.
3.39.6 Earthquake Resistance
R3-240 [172] Cabinets installed to their mounting pad or pole, using the cabinet
manufacturer’s recommended specifications and procedures, and equipped with
electronics and equipment, shall meet the physical performance and functional
criteria outlined in GR-63-CORE,[4] Sections 4.4.1.2 and 4.4.1.3.
For earthquake and environmental vibration, pad-mounted and pole-mounted units
shall be secured directly using the hardware provided or recommended by the
manufacturer. Pad-mounted units are directly mounted to the vibration table, while
pole-mounted units are on a pole with the bottom of the cabinet 2 feet off the
vibration table or at the minimum installation height specified by the manufacturer.
The pole shall be a steel pole that is 9 inches in diameter and 1/2 inch thick that is
welded to a steel flange that will mount to the vibration table. Wall-mounted units
are to be secured to a simulated wall constructed of steel or aluminum, which is
directly mounted to the vibration table.
NOTE: A hybrid wood-steel pole shall be used when mounting to or into a
wooden pole is an integral part of a pole-mount securing method. Such a
pole could consist of a 6-inch square tube, ½-inch steel walls, with a
1-inch deep wood interface or other, as determined by the cabinet
manufacturer.
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Generic Requirements for Electronic Equipment Cabinets
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Evaluating Dust Accumulation and Wind-Driven Rain Test
Appendix A: Evaluating Dust Accumulation and Wind-Driven
Rain Test
A.1 Observational Standard for Evaluating Dust Accumulation
Figure A-1 Observational Standard
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A.2 Wind-Driven Rain Test Set-Up Calibration Suggested Procedure
A.2.1 Purpose
This appendix defines the procedures that can be followed to qualify the test set-up
for Wind-Driven Rain testing for several Telcordia GRs such as this GR,
GR-2898-CORE,[23] and GR-771-CORE,[11] etc. This document refers to
MIL Std 810F,[71] which discusses issues such as the drop size. This document also
includes the Rainfall Rate of 15 cm/hour (5.8 in/hour) and Wind Velocity of
31 m/sec (70 mph).
A.2.2 Test Set Calibration
Determine the center of the wind tunnel opening and the outline of the equipment
sample under test (FDH) centered over the tunnel opening.
1. Adjust the positions of the gauges (#90107 Springfield Rain Gauges) on the
adjustable rod assembly (see Figure A-2) to coincide with the four corners and
centerline of the FDH. The gauges (see Figure A-3) will be both air velocity in
miles per hour or rainfall gauges. Rainfall and air velocity can be measured
separately. The method of gauging wind velocity shall provide a means of
averaging wind speed data.
2. The water shall be dispersed using the spray head piping as described in UL
50E.[74]
3. Place the gauge matrix in front of the wind tunnel opening and start the test
blower(s).
4. Place an air velocity gauge at each gauge position, measure the air velocity in
miles per hour in each of the positions, and average the readings to arrive at an
average test velocity. Adjust the wind tunnel opening and/or blower speed and
repeat step 4 as necessary to arrive at the desired average wind velocity.
5. Remove the air velocity gauges, install rain gauges at a 45-degree angle, and turn
on the blower and water spray nozzles. Collect water in each of the gauges for
30 minutes and turn off the water source and blower power.
6. Measure and average the rain gauge contents to arrive at an average rainfall rate.
After completion of the 1–2 hour rain collection test, the amount of rain in each
gauge tilted 45° during the test should be measured with the gauge placed in a
vertical position and factored by 1.44238 to indicate the actual collection rate of
an untilted gauge. Example: 1.35 inches collected × 1.4423 = 1.947 inches in
1/2 hour or 3.89 inches per hour. Adjust the water pressure/flow and repeat step
5 as necessary to arrive at the desired rainfall rate. The specified levels are a
rainfall rate of 5.8 inches/hour at a wind velocity of 70 miles/hour. So for a
30-minute test, the rainfall rate is approximately 2.9 inches/30 minutes. It is
required that the test set-up minimums are a rainfall rate of 5.8 inches/hour at a
wind velocity of 70 miles/hour. The test set-up measured levels may exceed the
required minimums by 15%. If agreed to by the vendor and test lab, the required
minimums may exceed the required levels by more than 15%.
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Evaluating Dust Accumulation and Wind-Driven Rain Test
Figure A-2 Wind Speed and Rainfall Verification Fixture
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Evaluating Dust Accumulation and Wind-Driven Rain Test
GR-487-CORE
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Figure A-3 Reduction of Water Collection Aperture With an Inclined Rain Gauge
During Wind-Driven Rain Testing
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Generic Requirements for Electronic Equipment Cabinets
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References
Appendix B: References
1. GR-13-CORE, Generic Requirements for Pedestal Terminal Closures.
2. GR-26-CORE, Generic Requirements for Controlled Environmental Vaults
(CEVs).
3. GR-43-CORE, Generic Requirements for Telecommunications Huts.
4. GR-63-CORE, NEBSTM Requirements: Physical Protection (a module of LSSGR,
FR-64; TSGR, FR-440; and NEBS, FR-2063).
5. TR-NWT-000154, General Requirements for 24-, 48-, 130-, and 140-Volt Central
Office Power Plant Control and Distribution Equipment.
6. GR-209-CORE, Generic Requirements for Product Change Notices (PCNs).
7. GR-232-CORE, Generic Requirements for Lead-Acid Storage Batteries.
8. TA-NWT-000406, DC Bulk Power System for Confined Locations.
9. GR-449-CORE, Generic Requirements for Design Considerations for Fiber
Distributing Frame.
10. GR-513-CORE, LSSGR: Power, Section 13 (a module of FR-64).
11. GR-771-CORE, Generic Requirements for Fiber Optic Splice Closures.
12. GR-839-CORE, Generic Requirements for Supplier-Provided Training (a module
of LSSGR, FR-64; TSGR, FR-440; and OTGR, FR-439).
13. GR-937-CORE, Generic Requirements for Outdoor and Indoor Building Entrance
Terminals (BETs).
14. GR-950-CORE, Generic Requirements for Optical Network Unit (ONU) Closures.
15. TR-NWT-001293, Generic Requirements for Permanent Engine Generators for
Remote Electronic Sites.
16. TR-NWT-001011, Generic Requirements for Surge Protective Devices (SPDs) on
AC Power Circuits.
17. GR-1089-CORE, Electromagnetic Compatibility and Electrical Safety – Generic
Criteria for Network Telecommunications Equipment.
18. GR-1200-CORE, Generic Requirements for Accelerated Life Testing of Valve
Regulated Lead Acid Batteries at High Temperatures.
19. GR-1515-CORE, Generic Requirements for the Detection and Control of Thermal
Runaway in VRLA Batteries.
20. GR-2759-CORE, A View of Packaging, Packing, Palletization, and Marking
Requirements.
21. GR-2832-CORE, Generic Requirements for Walk-In Cabinets.
22. GR-2836-CORE, Generic Requirements for Assuring Corrosion Resistance of
Telecommunication Equipment in the Outside Plant.
23. GR-2898-CORE, Generic Requirements for Fiber Demarcation Boxes.
24. GR-3020-CORE, Nickel Cadmium Batteries in the Outside Plant.
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GR-487-CORE
Issue 3, April 2009
References
25. GR-3108-CORE, Generic Requirements for Network Equipment in the Outside
Plant (OSP).
26. GR-3115-CORE, Generic Requirements for Copper Cross-Connect Cabinets.
27. GR-3125-CORE, Generic Requirements for Outdoor Fiber Distribution Hubs
(FDHs).
28. GR-3142-CORE, Generic Requirements for Intelligent Network Interface Devices
(iNIDs).
29. GR-3150-CORE, Generic Requirements for Secondary Non-Aqueous Lithium
Batteries.
30. SR-4228, VRLA Battery String Certification Levels Based on Requirements for
Safety and Performance.
B.1 Non-Telcordia Documents
31. ANSI S1.1, American National Standard Specification for Acoustical
Terminology, 1994.
32. ANSI S1.4, American National Standard Specification for Sound Level Meters,
2006.
33. ANSI S1.13, Measurement of Sound Pressure Levels in Air, 2005.
34. ANSI/ASCE 7-95, Minimum Design Loads for Buildings and Other Structures,
1996.
35. ANSI/IEEE C2, National Electrical Safety Code (NESC), 2007.
36. ANSI/IEEE C62.41, IEEE Recommended Practice on Surge Voltages in LowVoltage AC Power Circuits.
37. ANSI/NFPA 70, National Electrical Code, (NEC) 2008.
38. ANSI NCSL Z540-3, Requirements for the Calibration of Measuring and Test
Equipment, 2006.
39. ASTM G 21, Standard Practice for Determining Resistance of Synthetic
Polymeric Materials to Fungi, 1996.
40. ASTM E 29, Standard Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications, 2008.
41. ASTM D 56, Standard Test Method for Flash Point by Tag Closed Cup Tester, 2005.
42. ASTM B 117-A, Standard Practice for Operating Salt Spray (Fog) Apparatus,
2007.
43. ASTM A 153, Standard Specification for Zinc Coating (Hot -Dip) on Iron and
Steel Hardware, 2005.
44. ASTM G 154, Standard Practice for Operating Fluorescent Light Apparatus for
UV Exposure of Nonmetallic Materials, 2006.
45. ASTM G 155, Standard Practice for Operating Xenon Arc Light Apparatus for
Exposure of Non-Metallic Materials, 2005, Revision A.
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Telcordia Technologies, Inc. — Enterprise License Restrictions. See restrictions on title page.
Generic Requirements for Electronic Equipment Cabinets
GR-487-CORE
References
46. ASTM A 380, Standard Practice for Cleaning, Descaling, and Passivation of
Stainless Steel Parts, Equipment, and Systems, 2006.
47. ASTM D 518, Standard Test Method for Rubber Deterioration – Surface Cracking.
48. ASTM D 523, Standard Test Method for Specular Gloss, 2008.
49. ASTM D 610, Standard Method for Evaluating Degree of Rusting on Painted Steel
Surfaces, 2008.
50. ASTM D 638, Standard Test Method for Tensile Properties of Plastics, 2008.
51. ASTM A 967, Standard Specification for Chemical Passivation Treatments for
Stainless Steel Parts, 2005.
52. ASTM D 1149, Standard Test Method for Rubber Deterioration – Cracking in an
Ozone Controlled Environment, 2007.
53. ASTM D 1654, Standard Test Method for Evaluation of Painted or Coated
Specimens Subjected to Corrosive Environments, 2008.
54. ASTM D 1693, Standard Test Method for Environmental Stress-Cracking of
Ethylene Plastics. 2008.
55. ASTM D 2197, Standard Test Method for Adhesion of Organic Coatings by Scrape
Adhesion, 1998.
56. ASTM D 2244, Standard Practice for Calculation of Color Tolerances and Color
Differences From Instrumentally Measured Color Coordinates, 2007.
57. ASTM D 2794, Standard Test Method for Resistance of Organic Coatings to the
Effects of Rapid Deformation (Impact), 1993.
58. ASTM D 4169, Standard Practice for Performance Testing of Shipping
Containers and Systems, 2008.
59. ATIS-0600004, Equipment Surface Temperature, 2006.
60. ATIS-0600010, Temperature, Humidity & Altitude Standards, 2007.
61. ATIS-0600010.01, Temperature, Humidity, and Altitude Requirements for
Network Telecommunications Equipment Utilized in Outside Plant
Environments, 2008.
62. DS/EN 60721-3-4+A1, Classification of Environmental Conditions – Part 3:
Classification of Groups of Environmental Parameters and Their Severities –
Section 4: Stationary Use at Non-Weatherprotected Locations, 1997.
63. ATIS-0600307, Fire Resistance Criteria – Ignitability Requirements for
Equipment Assemblies, Ancillary Non-Metallic Apparatus, and Fire Spread
Requirements for Wire and Cable, 2007.
64. ATIS-0600329, Network Equipment – Earthquake Resistance, 2008.
65. ETSI EN 300 019, Environmental Engineering (EE); Environmental Conditions
and Environmental Tests for Telecommunications Equipment – Part 1-10:
Classification of Environmental Conditions; Introductions – V2.1.2, 2003.
66. ETSI EN 300 019-2-2, Equipment Engineering (EE); Environmental Conditions
and Environmental Tests for Telecommunications Equipment; Part 2-2:
Specification of Environmental Tests Transportation – V2.1.1, 1999.
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GR-487-CORE
Issue 3, April 2009
References
67. IEC 60417-1, Graphical Symbols for Use on Equipment, 2002.
68. IEC 60529, Degrees of Protection Provided by Enclosures (IP Code), 2004.
69. ISO 10012-1, Measurement Management Systems Requirements for
Measurement Processes and Measuring Equipment, 2003.
70. NBS Report 81-2320, A Heat Transfer Analysis of Scald Injury.
71. MIL-STD-810F, Environmental Test Methods and Engineering Guidelines,
(Department of Defense).
72. MIL-STD-781, Reliability Testing for Engineering Development, Qualification,
and Production.
73. UL 50, UL Standard for Safety Enclosures for Electrical Equipment,
Non-Environmental Considerations, 2007.
74. UL 50E, UL Standard for Safety Enclosures for Electrical Equipment,
Environmental Considerations, 2007.
75. UL 67, UL Standard for Safety Panelboards – Twelfth Edition, 2009.
76. UL 94, Test for Flammability of Plastic Materials for Parts in Devices and
Appliances, Vertical Burning Test for Classifying Materials 94 V-0, 94 V-1, or 94
V-2, 1996.
77. UL 746C, UL Standard for Safety Polymeric Materials – Use in Electrical
Equipment Evaluations, 2004.
78. UL 891, UL Standard for Safety Switchboards – Eleventh Edition, 2005.
79. UL 1581, Reference Standard for Electrical Wires, Cables and Flexible Cords, 2001.
80. UL 60950-1, UL Standard for Safety Information Technology Equipment – Safety
– Part 1: General Requirements, Reprint with Revisions, 2007.
81. UL 60950-22, UL Standard for Safety of Information Technology Equipment –
Safety – Part 22: Equipment To Be Installed Outdoors, 2007.
B.2 Reference Note
All Telcordia documents are subject to change, and their citations in this document
reflect the most current information available at the time of this printing. Readers
are advised to check current status and availability of all documents.
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Generic Requirements for Electronic Equipment Cabinets
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References
B.3 Contact Telcordia
Telcordia Customer Service
One Telcordia Drive, Room 1B180
Piscataway, NJ 08854-4182
+ 1.732.699.5828 (Worldwide)
+ 1.732.336.2226 (FAX)
E-mail: document-info@telcordia.com
Web site: telecom-info.telcordia.com
B.4 Order Documents Online From the Telcordia Information SuperStore
1. Go to the SuperStore Web site: telecom-info.telcordia.com
(At this site, the Search and Browse selections provide access to the Telcordia
catalog of technical information.)
2. If you know the document number, enter it in the
Product Search box in the left margin and click Go!
3. Click on the desired product match.
If you do not know the document number, do the following:
1. Click on Search located on the top bar.
2. In the Keywords field, enter the keywords (or document number), then click
Submit Search.
3. Click on the desired product match.
To Order Documents From Within Telcordia (Employees Only)
1. Access the Telcordia Internal Home Page (InSite).
2. Click on Self-Service on the Navigation Bar.
3. Click on Document Database.
4. Click on Basic Search in the bullet list to obtain the Basic Search Criteria box.
5. In the Search by Document Number field, enter the document number
(e.g., GR-454), then scroll down to click on Submit Search.
In the Basic Search Navigation List, select Click for Abstract to order an available
document, or select Click for Document to view an available document.
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GR-487-CORE
Issue 3, April 2009
References
B.5 Telcordia Web Sites for Generic Requirements Information
The Generic Requirements Overview at telcordia.com/services/genericreq/
provides information about the GR development process. At this site, select from the
following menu:
Generic Requirements
Overview
• Latest Developments in GRs
(What’s New)
• Recent Document Releases
• Order GRs (SuperStore)
• About GRs
• Invitations to Participate
• Participation Benefits
• DIGEST Archive
To receive a monthly e-mail notification on current GR information, please visit
What’s New and send a request.
B.6 Telcordia Licensing Agreements
Telcordia licensing agreements are designed to fit specific business needs whether
it be a complete collection of Telcordia documents, a select group, or just one
document. Select Licensing Info (top bar) from the SuperStore for the following
licensing descriptions:
— Enterprise License (EL)
— AXESS PointSM Service Contract.
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Generic Requirements for Electronic Equipment Cabinets
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Acronyms
Appendix C: Acronyms
AC — Alternate Current
AHJ — Authority Having Jurisdiction
ANSI — American National Standards Institute
ASCE — American Society of Civil Engineers
ATIS — Alliance for Telecommunications Industry Solutions
AWG — American Wire Gauge
BET — Building Entrance Terminal
CEV — Controlled Environmental Vault
CO — Central Office
DC — Direct Current
DLC — Digital Loop Carrier
DS1 — Digital Signal 1
DS3 — Digital Signal 3
DSL — Digital Subscriber Loop
DSLAM — Digital Subscriber Line Access Multiplexer
EPA — Environmental Protection Agency
EMI — Electromagnetic Interference
ETSI — European Telecommunications Standards Institute
EUT — Equipment Under Test
FCC — Federal Communications Commission
FDH — Fiber Distribution Hub
FDI — Feeder Distribution Interface
FR — Family of Requirements
GFI — Ground Fault Interrupter
GR — Generic Requirement document
HDSL — High-bit-rate Digital Subscriber Line
HVAC — Heating, Ventilation, and Air-conditioning
IEC — International Electrotechnical Commission
IEEE — Institute of Electronics and Electrical Engineers
ILR — Issues List Report
IPTV — Internet Protocol Television
ISO — International Organization for Standardization
MGN — MultiGround Neutral
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Acronyms
NEC — National Electrical Code
NEMA — National Electrical Manufacturers Association
NESC — National Electric Safety Code
NFPA — National Fire Protection Association
NIU — Network Interface Unit
NOC — Network Operation Center
NRTL — Nationally Recognized Test Laboratory
ONU — Optical Network Unit
OSHA — Occupational Safety & Health Administration
OSP — Outside Plant
PCN — Product Change Notice
POTS — Plain Old Telephone Service
RoHS — Restriction of Hazardous Substances Directive
SPL — Sound Pressure Level
TA — Technical Advisory
TR — Technical Reference
TTF — Telcordia Technical Forum
UL — Underwriters Laboratory
UB — Ultraviolet
VDC — Volts of Direct Current
WEEE — Waste Electrical and Electronic Equipment (directive)
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Generic Requirements for Electronic Equipment Cabinets
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OSP Cabinet Retrofit/Augment Guidelines
Appendix D: OSP Cabinet Retrofit/Augment Guidelines
D.1 Background
These guidelines deal with the installation of new telephony equipment in existing
Outside Plant (OSP) enclosures. The purpose of this new equipment is to provide
new services or to improve existing services.
Telecom access equipment is often installed in OSP enclosures because it must be
near the end customer. When the new equipment is installed, it is often installed in
a new, purpose-built OSP enclosure.
Telecom service providers sometimes find it necessary to install new equipment in
existing OSP enclosures. The process of installing new equipment in existing
enclosures is generally known as retrofitting or augmenting.
D.2 Basic Guidelines
These guidelines deal mostly with the effects on the cabinet of adding new
equipment. However, it is equally important that the equipment itself is suitable for
the application. For this reason, only equipment that complies with GR-3108, Class
2 or 3 standards should be considered for retrofitting into a cabinet.
It is recommended to review the retrofit plan with the original equipment
manufacturer, if possible.
• As a first step, the cabinet to be retrofitted should be inspected. The cabinet
should be checked for weathertightness, rust, seal damage, dents, door
alignment, lock function, clogged or missing screens and filters, and other
damage.
D.3 Retrofit Parameters
For any retrofit/augment project, there are nine parameters that should be reviewed
and verified. They are discussed in the following sections:
• Section D.3.1, “Physical Space – Parameter 1,”
• Section D.3.2, “DC Power – Parameter 2,”
• Section D.3.3, “Power/Battery Reserve – Parameter 3,”
• Section D.3.4, “AC Power – Parameter 4,”
• Section D.3.5, “Thermal Capacity – Parameter 5,”
• Section D.3.6, “Signal/Transmission Capacity – Parameter 6,”
• Section D.3.7, “Electromagnetic Interference (EMI) – Parameter 7,”
• Section D.3.8, “Bonding and Grounding Safety – Parameter 8,”
• Section D.3.9, “Acoustic Noise - Parameter 9,”
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D.3.1 Physical Space – Parameter 1
Beyond the obvious need to ensure that there is sufficient room for the equipment,
there are additional space-related items that should be considered.
1. The installation of the new equipment should allow its vents proper clearance
per the manufacturer’s specifications.
2. The new equipment should not substantially block the airflow for the existing
equipment.
For example, if the new equipment’s airflow is left to right, but it needs to be
installed in a bay where the existing equipment’s airflow is straight-through
upwards, then the ideal place for the new equipment would be below the first fan
tray.
Another example would be in a bay where the existing equipment’s airflow is
front to back, and the rear of the enclosure forms a column of exhaust. In this
case, the new equipment should not be so deep that it blocks the exhaust
column.
3. If the new equipment requires adapter brackets, verify that they are designed for
the weight of the new equipment and that enough fasteners are used. The
bracket should be at least as tall as the new equipment.
4. It is also important to plan the cabling for the new equipment to ensure that
cables to and from the new equipment do not block vents, flow paths, etc.
D.3.2 DC Power – Parameter 2
The new equipment may be powered via two methods: A) via the enclosure’s
existing DC plant, or B) via a new, dedicated power system.
A. If the enclosure’s existing plant is used:
1. Verify that the existing DC plant provides sufficient excess capacity for the new
equipment by comparing the maximum published equipment load with the
published DC plant rating. For DC plants with multiple rectifier modules, ensure
that the N+1 redundancy is maintained. Certain installations with a DC generator
may not require N+1 redundancy. If load data is not available, it is sufficient to
measure the existing equipment’s current draw, multiply that value by 1.25, and
use that as the maximum, but only if the existing equipment is fully populated,
or if it can be verified that there will be no new subscriber growth. The 1.25
factor is derived from typical POTS/DSL equipment. It is based on the power
draw for the equipment going from 0 CCS and 50% turn-up, to 6 CCS and 100%
turn-up.
2. Verify that the existing DC distribution provides the required fuse or circuit
protection for the new equipment, or provide a new DC distribution.
3. Verify that all cables are sized to carry the new, higher load.
B. If a new, dedicated DC plant is used:
1. Verify that the AC service and cables are sized for the new, higher load. See
Section D.3.4, “AC Power – Parameter 4.”
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Generic Requirements for Electronic Equipment Cabinets
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2. If both the original DC plant and new DC plant are to co-exist in the cabinet, the
new dedicated DC plant will require dedicated batteries. Two independent
rectifiers cannot share batteries.
C. In either case (A or B), a label should be added to the cabinet stating the
maximum power system design load.
D.3.3 Power/Battery Reserve – Parameter 3
The additional power required by the new equipment will affect the battery reserve
capacity. Verify that the battery reserve time for the existing equipment, multiplied
by 1.25 (Section D.3.2, “DC Power – Parameter 2,” Item 2), plus the new equipment,
is 8 hours or better, per code.
Existing enclosures may be of two different basic designs: 1) open air, where there
is a purposeful flow of outside air through the cabinet at all times, and 2) sealed,
where the equipment chamber is purposefully isolated from the outside air. If the
battery reserve calculation shows the need for additional batteries, they may be
added as follows:
1. For enclosures of an open airflow design:
• If the enclosure included batteries in the equipment space as part of the
original design, then additional batteries may be placed in the equipment
space.
2. For enclosures of a sealed design:
• If the enclosure included a dedicated battery compartment, then additional
batteries may be installed in the dedicated compartment only. If additional
space is required, then a separate, external purpose-built battery box should
be used.
3. Verify that any new battery trays or brackets are sized for the battery weight.
Verify that the structure where the trays are mounted is sized for the weight of
the batteries and trays, with a factor of safety of 6.
4. Ensure that the additional batteries are not installed above active equipment, or
block any vents.
5. Ensure that the additional batteries are not installed directly behind equipment
exhaust or other areas of concentrated heat, or if this is not possible, ensure that
the batteries are shielded from the heat.
6. If the batteries are VRLA style, they should have an active thermal runaway
protection system installed and connected to the new DC plant.
D.3.4 AC Power – Parameter 4
It is important to note that any changes to the DC plant may affect the AC
requirements.
1. Verify that the cables, circuit breakers, and the AC load center itself are sized for
the full rating of the new DC plant. The load rating should be based on the
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maximum possible shelf output, not just the output at the time of the install. The
local code should be considered.
2. In general, the AC Power system in the cabinet after the retrofit should meet the
requirements noted in GR-487-CORE.
3. See Section D.5, “Documentation,” for labeling recommendations.
D.3.5 Thermal Capacity – Parameter 5
Most retrofits may require some form of thermal upgrade. This upgrade could be in
the form of a heat exchanger, replacement fans, additional fans, solar shield,
insulation, or a combination of all of these. Verify the enclosure’s thermal
performance with the equipment installed as follows:
1. If a test enclosure is available, install all existing and new equipment (or
simulations thereof) and perform a standard GR-487-CORE, Solar test, see
Section D.4, “Testing.”
NOTE: This is the preferred method. Whenever possible, a controlled test
based on published equipment data should be performed.
2. If a test enclosure is not available, then internal and external temperature data
should be collected in a suitable field enclosure with the new equipment off, and
then on, to establish the temperature increase. With this information, it will be
possible to approximate the enclosure thermal capacity. See the following
example. Use of this type of testing is not preferred since field tests present more
variables that cannot be controlled. If a field test is used, its results should be
limited to that particular region of the country.
Test Data
.....
Temperature, Degrees °C
Load, Watts
Test
Outside
Inside,
Average
Outside
Delta T to
46°C
Existing,
Measured
New
Equipment
Total
1
37
47
9
1000
0
1000
2
36
51
10
1000
400
1400
Calculations - Temperature Adjusted to 46°C
Outside T Test
Adjusted
Inside T Adjusted
1
46
56
2
46
61
Delta
Existing
Delta T,
Resulting
Load,
Load
Resulting
Test 1 ->
Additional
Test 1 -> °C/Watt
X.25
Test 2
T
Test 2
Adder
5.0
400
0.0125
250
3.125
Final
Inside
Temp
64.1
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Generic Requirements for Electronic Equipment Cabinets
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OSP Cabinet Retrofit/Augment Guidelines
3. From this example, it is clear that the additional 400 watts from the new
equipment, plus 25% (per Section D.3.2, “DC Power – Parameter 2,” Item 1) of the
measured existing equipment load results in an adjusted internal temperature of
64.1°C. Since this is less than the 65°C target from this GR (GR-487-CORE), this
retrofit may be considered to pass the thermal requirements of these guidelines.
4. With either test method, test probe locations should be carefully selected to
show the true equipment and cabinet temperatures. Consult the equipment
manufacturers whenever possible for probe location data, and pass/fail criteria.
D.3.6 Signal/Transmission Capacity – Parameter 6
The new equipment typically increases data throughput. Consequently, it may
require:
1. Higher-rated signal and transport cables, such as replacing the existing Cat 3
cabling with Cat 5 or 6 cabling.
2. Appropriately rated protection panels to reduce the introduction of noise.
3. Appropriately rated line protectors to allow for new voltage ranges or faster data
rates.
D.3.7 Electromagnetic Interference (EMI) – Parameter 7
1. As noted in Section D.2, “Basic Guidelines,”only GR-3108 rated equipment
should be considered for retrofits. This will provide some level of EMI
protection; however, note that combining different types of equipment together
in one cabinet can have unforeseen cumulative effects.
2. If a test enclosure is available, install all existing and new equipment and
perform the standard GR-1089-CORE, EMI tests. See Section 3.2.
D.3.8 Bonding and Grounding Safety – Parameter 8
Verify the following for all new equipment:
1. That equipment is properly grounded with correctly sized wires
2. That there is only one principle ground bus
3. That secondary grounds connect to the enclosure’s principle ground
4. In general, the grounding of the cabinet after the retrofit should meet the
requirements in Section 3.19, “Bonding and Grounding,” of this GR.
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D.3.9 Acoustic Noise - Parameter 9
Acoustic noise has become a more important parameter in recent years. Often, other
than the actual size of the cabinet, it is the most noticeable property of the cabinet.
Many municipalities have created standards to limit the noise of equipment installed
in neighborhoods. While retrofits to an existing cabinet may be exempt from new
regulations, it is still important to consider the acoustic impact of the retrofit.
1. Before beginning a retrofit, measure the noise of the cabinet per this GR. If at all
possible, ensure that all fans are running at maximum speed during the
measurement.
2. Measure the noise after the retrofit, again, with all fans running at full speed, and
record the results. The cabinet noise should be less than the 65 dB requirement
in this GR, or at least no louder than the cabinet was before the retrofit.
3. If any of the measurements are more than 65 dB, discuss with the end customer.
It may be necessary to reduce the noise of the cabinet before completing the
retrofit.
D.4 Testing
Good engineering judgment should always be used in determining the testing
requirements for a retrofit. Due to the unpredictable nature of mixing equipment and
enclosures from different vendors, a variety of issues may arise that require testing.
For example, if the retrofit’s cooling solution requires cutting the outside of the
enclosure, a Wind-Driven Rain test, Section 3.31.1, should be included.
At a minimum, the following tests should be performed:
A. Testing per GR-487-CORE:
1. High Temperature Extremes with Solar Effects, Section 3.29, “Exposure to
High Temperature.”
B. Electromagnetic Interference (EMI) Testing per GR-1089-CORE:
1. Radiated Emissions (E-Field), Section 3.2
2. Radiated Emissions (H-Field), Section 3.2
3. Conducted Emissions, Section 3.2
4. Electrical Safety, Section 7
5. Bonding and Grounding, Section 9.
D.5 Documentation
1. Documentation provided by the supplier should provide appropriate
instructions for proper installation of the retrofit.
2. A new cabinet wiring schematic should be provided. Any cabinet labels showing
pair assignments, power loads, etc., that are affected by the retrofit should be
replaced.
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Generic Requirements for Electronic Equipment Cabinets
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OSP Cabinet Retrofit/Augment Guidelines
3. If the newly added equipment creates new safety concerns, appropriate labels
should be added to the cabinet.
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Requirement-Object Index
Requirement-Object Index
[1] . . . R3-1 . . . . . . Page 3–1 [48] . . R3-56 . . . .Page 3–20 [96] . . CR3-124 . .Page 3–32
[2] . . . R3-2 . . . . . . Page 3–1 [49] . . R3-57 . . . .Page 3–20 [97] . . R3-125 . . .Page 3–32
[3] . . . R3-3 . . . . . . Page 3–1 [50] . . R3-58 . . . .Page 3–20 [98] . . R3-126 . . .Page 3–32
[4] . . . R3-4 . . . . . . Page 3–1 [51] . . R3-59 . . . .Page 3–20 [99] . . R3-127 . . .Page 3–32
[5] . . . R3-5 . . . . . . Page 3–2 [52] . . R3-60 . . . .Page 3–20 [101] . R3-135 . . .Page 3–33
[6] . . . R3-6 . . . . . . Page 3–2 [53] . . CR3-61 . . . Page 3–20 [102] . CR3-136 . .Page 3–33
[7] . . . R3-7 . . . . . . Page 3–2 [55] . . R3-62 . . . .Page 3–20 [103] . R3-137 . . .Page 3–33
[8] . . . R3-8 . . . . . . Page 3–2 [56] . . R3-63 . . . .Page 3–21 [104] . R3-139 . . .Page 3–34
[9] . . . CR3-13 . . . . Page 3–5 [57] . . R3-64 . . . .Page 3–21 [105] . R3-140 . . .Page 3–34
[12] . . CR3-16 . . . . Page 3–6 [58] . . R3-65 . . . .Page 3–21 [107] . R3-141 . . .Page 3–34
[13] . . R3-17 . . . . . Page 3–6 [59] . . R3-68 . . . .Page 3–24 [108] . R3-142 . . .Page 3–34
[14] . . CR3-18 . . . . Page 3–8 [60] . . O3-69 . . . .Page 3–24 [109] . O3-143 . . .Page 3–35
[15] . . R3-19 . . . . . Page 3–8 [61] . . CR3-71 . . . Page 3–24 [110] . R3-144 . . .Page 3–35
[16] . . R3-20 . . . . . Page 3–8 [62] . . R3-72 . . . .Page 3–24 [111] . R3-145 . . .Page 3–35
[17] . . R3-23 . . . . . Page 3–9 [63] . . CR3-73 . . . Page 3–24 [112] . R3-146 . . .Page 3–35
[18] . . R3-24 . . . . . Page 3–9 [64] . . R3-75 . . . .Page 3–25 [113] . R3-147 . . .Page 3–35
[19] . . R3-25 . . . . . Page 3–9 [65] . . CR3-76 . . . Page 3–25 [115] . CR3-148 . .Page 3–35
[20] . . R3-26 . . . . Page 3–10 [66] . . CR3-77 . . . Page 3–25 [117] . R3-149 . . .Page 3–35
[21] . . R3-27 . . . . Page 3–11 [67] . . R3-78 . . . .Page 3–25 [118] . R3-150 . . .Page 3–35
[22] . . R3-28 . . . . Page 3–11 [68] . . CR3-80 . . . Page 3–25 [119] . R3-166 . . .Page 3–37
[23] . . R3-29 . . . . Page 3–11 [69] . . R3-81 . . . .Page 3–25 [120] . R3-167 . . .Page 3–37
[25] . . R3-30 . . . . Page 3–11 [70] . . CR3-82 . . . Page 3–26 [121] . CR3-168 . .Page 3–37
[26] . . R3-31 . . . . Page 3–11 [71] . . R3-91 . . . .Page 3–27 [122] . R3-224 . . .Page 3–61
[27] . . R3-32 . . . . Page 3–11 [72] . . R3-92 . . . .Page 3–27 [123] . R3-172 . . .Page 3–38
[28] . . R3-33 . . . . Page 3–11 [73] . . R3-93 . . . .Page 3–28 [124] . R3-173 . . .Page 3–38
[29] . . R3-34 . . . . Page 3–12 [74] . . R3-98 . . . .Page 3–28 [125] . CR3-174 . .Page 3–39
[30] . . R3-35 . . . . Page 3–12 [75] . . R3-99 . . . .Page 3–29 [126] . R3-176 . . .Page 3–39
[31] . . R3-36 . . . . Page 3–12 [77] . . R3-101 . . .Page 3–29 [127] . R3-177 . . .Page 3–39
[32] . . R3-37 . . . . Page 3–12 [78] . . R3-102 . . .Page 3–29 [128] . R3-178 . . .Page 3–39
[33] . . R3-38 . . . . Page 3–13 [79] . . R3-105 . . .Page 3–30 [129] . R3-179 . . .Page 3–39
[34] . . R3-14 . . . . . Page 3–5 [81] . . R3-106 . . .Page 3–30 [130] . R3-180 . . .Page 3–39
[35] . . R3-15 . . . . . Page 3–6 [82] . . R3-107 . . .Page 3–30 [131] . R3-181 . . .Page 3–39
[36] . . R3-39 . . . . Page 3–13 [83] . . R3-108 . . .Page 3–30 [132] . R3-182 . . .Page 3–39
[37] . . R3-40 . . . . Page 3–13 [84] . . R3-109 . . .Page 3–30 [133] . R3-183 . . .Page 3–40
[38] . . R3-41 . . . . Page 3–13 [85] . . O3-110 . . .Page 3–30 [134] . R3-184 . . .Page 3–40
[39] . . R3-42 . . . . Page 3–14 [86] . . R3-111 . . .Page 3–30 [135] . R3-185 . . .Page 3–40
[40] . . R3-45 . . . . Page 3–16 [87] . . CR3-112 . .Page 3–31 [136] . R3-187 . . .Page 3–40
[41] . . R3-46 . . . . Page 3–16 [88] . . R3-113 . . .Page 3–31 [137] . R3-188 . . .Page 3–40
[42] . . R3-47 . . . . Page 3–16 [89] . . R3-117 . . .Page 3–31 [138] . R3-189 . . .Page 3–40
[43] . . R3-51 . . . . Page 3–19 [91] . . R3-118 . . .Page 3–31 [139] . R3-190 . . .Page 3–40
[44] . . R3-52 . . . . Page 3–19 [92] . . R3-119 . . .Page 3–31 [140] . O3-191 . . .Page 3–40
[45] . . R3-53 . . . . Page 3–19 [93] . . CR3-120 . .Page 3–32 [141] . O3-192 . . .Page 3–40
[46] . . R3-54 . . . . Page 3–19 [94] . . R3-121 . . .Page 3–32 [142] . R3-193 . . .Page 3–40
[47] . . R3-55 . . . . Page 3–19 [95] . . R3-122 . . .Page 3–32 [143] . R3-194 . . .Page 3–41
ROI–1
Telcordia Technologies, Inc. — Enterprise License Restrictions. See restrictions on title page.
Requirement-Object Index
GR-487-CORE
Issue 3, April 2009
[144] . CR3-195 . . Page 3–41 [195] . R3-128 . . .Page 3–32 [244] . R3-165 . . .Page 3–37
[145] . R3-196 . . . Page 3–41 [196] . R3-129 . . .Page 3–33 [245] . CR3-169 . .Page 3–38
[146] . R3-197 . . . Page 3–41 [197] . R3-130 . . .Page 3–33 [246] . CR3-171 . .Page 3–38
[147] . R3-198 . . . Page 3–41 [198] . R3-131 . . .Page 3–33 [247] . R3-175 . . .Page 3–39
[148] . CR3-200 . . Page 3–41 [199] . CR3-132 . .Page 3–33 [248] . CR3-201 . .Page 3–41
[149] . R3-206 . . . Page 3–42 [200] . R3-133 . . .Page 3–33 [249] . R3-202 . . .Page 3–41
[150] . R3-207 . . . Page 3–42 [201] . CR3-134 . .Page 3–33 [250] . R3-203 . . .Page 3–42
[152] . R3-208 . . . Page 3–44 [202] . R3-151 . . .Page 3–36 [251] . R3-204 . . .Page 3–42
[153] . CR3-212 . . Page 3–51 [203] . R3-152 . . .Page 3–36 [252] . R3-205 . . .Page 3–42
[154] . CR3-213 . . Page 3–51 [204] . R3-153 . . .Page 3–36 [253] . CR3-209 . .Page 3–44
[155] . R3-214 . . . Page 3–51 [205] . R3-154 . . .Page 3–36 [254] . R3-210 . . .Page 3–45
[156] . R3-216 . . . Page 3–54 [206] . R3-155 . . .Page 3–36 [255] . R3-215 . . .Page 3–51
[157] . R3-222 . . . Page 3–58 [207] . R3-156 . . .Page 3–36 [256] . CR3-218 . .Page 3–56
[158] . R3-221 . . . Page 3–57 [208] . R3-157 . . .Page 3–36 [257] . CR3-219 . .Page 3–56
[159] . R3-217 . . . Page 3–55 [209] . R3-158 . . .Page 3–36 [258] . CR3-223 . .Page 3–60
[160] . R3-225 . . . Page 3–62 [210] . R3-159 . . .Page 3–36 [259] . CR3-230 . .Page 3–67
[161] . R3-226 . . . Page 3–65 [211] . R3-160 . . .Page 3–36 [260] . R3-233 . . .Page 3–70
[162] . R3-227 . . . Page 3–65 [212] . R3-161 . . .Page 3–36 [261] . R3-236 . . .Page 3–71
[163] . CR3-228 . . Page 3–66 [213] . R3-162 . . .Page 3–36
[164] . R3-229 . . . Page 3–66 [214] . R3-163 . . .Page 3–36
[165] . R3-231 . . . Page 3–68 [215] . R3-164 . . .Page 3–37
[166] . R3-232 . . . Page 3–69 [216] . CR3-170 . .Page 3–38
[167] . R3-234 . . . Page 3–71 [217] . CR3-186 . .Page 3–40
[168] . CR3-235 . . Page 3–71 [218] . O3-199 . . .Page 3–41
[169] . R3-237 . . . Page 3–72 [219] . R3-211 . . .Page 3–51
[170] . R3-238 . . . Page 3–72 [220] . R3-220 . . .Page 3–57
[171] . R3-239 . . . Page 3–72 [224] . R2-1 . . . . . .Page 2–2
[172] . R3-240 . . . Page 3–73 [225] . R2-2 . . . . . .Page 2–2
[173] . R3-12 . . . . . Page 3–3 [226] . R3-9 . . . . . .Page 3–2
[174] . R3-21 . . . . . Page 3–8 [227] . CR3-10 . . . .Page 3–3
[175] . R3-22 . . . . . Page 3–9 [228] . CR3-11 . . . .Page 3–3
[176] . R3-48 . . . . Page 3–16 [229] . R3-43 . . . .Page 3–14
[177] . O3-50 . . . . Page 3–19 [230] . R3-44 . . . .Page 3–14
[178] . CR3-70 . . . Page 3–24 [231] . R3-49 . . . .Page 3–19
[179] . R3-74 . . . . Page 3–25 [232] . CR3-66 . . .Page 3–21
[180] . CR3-83 . . . Page 3–26 [233] . CR3-67 . . .Page 3–24
[181] . R3-86 . . . . Page 3–26 [234] . R3-79 . . . .Page 3–25
[182] . O3-87 . . . . Page 3–26 [235] . R3-84 . . . .Page 3–26
[187] . O3-94 . . . . Page 3–28 [236] . R3-85 . . . .Page 3–26
[188] . O3-95 . . . . Page 3–28 [237] . O3-88 . . . .Page 3–26
[189] . O3-96 . . . . Page 3–28 [238] . O3-89 . . . .Page 3–26
[190] . R3-97 . . . . Page 3–28 [239] . R3-90 . . . .Page 3–27
[191] . CR3-114 . . Page 3–31 [240] . R3-100 . . .Page 3–29
[192] . R3-115 . . . Page 3–31 [241] . R3-103 . . .Page 3–29
[193] . R3-116 . . . Page 3–31 [242] . R3-104 . . .Page 3–29
[194] . CR3-123 . . Page 3–32 [243] . CR3-138 . .Page 3–33
ROI–2
Telcordia Technologies, Inc. — Enterprise License Restrictions. See restrictions on title page.
TELCORDIA ENTERPRISE LICENSE AGREEMENT AND LIMITED WARRANTY
For Technical Documents: Generic Requirements (GRs), Special Reports (SRs), Technical
References (TRs), Technical Advisories (TAs), Family of Requirements (FRs), Family of
Documents (FDs), Framework Advisories (FAs), Science Technologies (STs), Message
Driven Program (MDPs), Information Publications (IPs), Audio Visuals (AVs) and Telcordia
Practices (BRs)
IMPORTANT! PLEASE READ CAREFULLY.
USE OF THIS PRODUCT INDICATES THAT YOU (LICENSEE OR USER) HAVE READ AND
ACCEPT THE TERMS OF THIS AGREEMENT. IF YOU DO NOT AGREE WITH THE TERMS
OF THIS AGREEMENT, YOU WILL NOT BE ALLOWED TO PURCHASE THIS PRODUCT.
1. LICENSE GRANT
Telcordia grants to customer ("Licensee") a non-exclusive, non-transferable, limited license to
use this Licensed Product by employees of Licensee ("Users") for internal business purposes
only. All intellectual property rights, title and interest in all Licensed Products furnished to
Licensee remain in Telcordia. This License does not preclude the execution of additional license
agreements with Licensee for the Licensed Product(s).
Telcordia has exclusive rights to all Licensed Products which are protected by United States and
international copyright laws.
2. LICENSEE'S USE:
a. Licensee may place the Licensed Products on a Local Area Network, Wide Area
Network, server, internal web site, or other electronic computing platform shared or
accessible to employees or affiliates of Licensee. Licensee may make paper and
electronic copies of Licensed Products as determined by Licensee to be necessary for
Licensee's internal purposes; provided all copies, in whole or in part, of the Licensed
Products shall bear the same Telcordia copyright and disclaimer notices legend as
appear on the Licensed Products originally furnished to Licensee by Telcordia.
b. Subject to the preceding paragraph, Licensee may reproduce and distribute Licensed
Products to "Affiliates" defined as (i) the parent entity (corporation or partnership) which
directly or indirectly owns the majority of the outstanding shares or interests of Licensee,
(ii) a sibling entity (corporation or partnership) the majority of whose outstanding shares
or interests are owned by its parent entity, or (iii) a subsidiary entity (corporation or
partnership) the majority of whose outstanding shares or interests are owned by
Licensee, provided, however, that such entity shall continue to remain an Affiliate
hereunder only as long as the applicable ownership interest as described above exists.
Licensee may sublicense the rights granted in this section to an Affiliate, provided
Licensee shall remain responsible for any breach by such Affiliate. Licensee shall ensure
that such Affiliate as assignee agrees to be bound by the rights, obligations and
limitations set forth herein, and such Affiliate shall be responsible for any breach by such
Affiliate and Licensee shall ensure that Telcordia shall have the right of direct
enforcement of such obligations against such Affiliate. If a direct enforcement claim is
denied, for any reason, it is agreed that Licensor may assert such claim against
Licensee.
c. Licensee may copy portions of Licensed Products to create specifications and related
documentation (the "Licensee Documentation").
d. Licensee may, in marketing a product or related services (collectively, "Licensee
Product"), (i) make reference to the Licensed Product utilized in the development of
Licensee Product; provided that Licensee shall make no statement, representation or
warranty on behalf of Telcordia including but not limited to a certification by Telcordia of a
product's or related service's compliance with the Licensed Product, unless otherwise
agreed to by the parties in writing; or (ii) distribute the Licensee Documentation to a third
party prior to sale of the Licensee Product.
e. Licensee may refer to and/or incorporate portions of such Licensed Products in the
Licensee Documentation for the Licensee Product and copy the Licensee Documentation
for distribution in conjunction with the sale of the Licensee Product to any third party so
long as the original Telcordia and copyright legends, as applicable, are acknowledged on
the specifications and/or documentation.
f. Licensee must treat the Licensed Product(s) like any other copyrighted material.
g. Except as otherwise stated, it is understood that the foregoing license does not include
the right to make copies of the Licensed Products for sale to third parties or to create
derivative works for sale.
USER MAY NOT:
a. Copy the Licensed Product, except as provided above;
b. Make copies of the Licensed Product or portions thereof as are permitted above for
internal purposes that contain provisions that conflict or differ in content from comparable
provisions of the Licensed Product, unless such differences are identified specifically,
and it is made clear in such copies that the results are not part of the Licensed Product;
c. Transfer the Licensed Product to another party, except as provided above;
d. Licensee may not make the Licensed Product available, in whole or in part for the
purposes of external distribution to third parties other than Affiliates.
e. Grant sublicenses, leases, or other rights to the Licensed Product or rent the Licensed
Products to others, except as provided above; or
f. Make telecommunications data transmissions of the Licensed Product to the public or
any third party.
g. Data, in whole or in part, may not be extracted from the Licensed Product(s) for use in
any derivative Licensee product or used to verify and subsequently modify data in any
Licensee product which is sold, licensed or otherwise provided to third parties unless
Licensee has executed a separately negotiated Special License Agreement with
Telcordia, except as provided above.
3. AUDITS
Upon reasonable written notice to Licensee, Telcordia shall have the right to review Licensee's
compliance with the terms and conditions of this License Agreement ("Agreement"). If such
review reveals a violation of the requirements set forth herein, in addition to any other remedies it
may have, Telcordia may terminate this Agreement in accordance with the Termination section of
this Agreement.
4. FEES AND PAYMENTS
All fees and charges due hereunder shall be paid in full within thirty (30) days of the date of the
invoice. Overdue payments are subject to a late payment charge, calculated and compounded
monthly, and calculated at an annual rate of either (1) one percent (1%) over the prime rate
available in New York City, as published in The Wall Street Journal on the first Monday (or the
next bank business day) following the payment due date; or (2) 18 percent (18%), whichever shall
be higher. If the amount of the late payment charge exceeds the maximum permitted by law, the
charge will be reduced to that maximum amount.
Licensee shall pay or reimburse Telcordia for all sales or use taxes, duties, or levies imposed by
any authority, government or government agency (other than those levied on the net income of
Telcordia) in connection with this Agreement. If Telcordia is required to collect a tax to be paid by
Licensee, Licensee shall pay this tax on demand. If Licensee fails to pay these taxes, duties or
levies, Licensee shall pay all reasonable expenses incurred by Telcordia, including reasonable
attorney's fees, to collect such taxes, duties or levies.
Telcordia shall provide Licensee with one (1) Copy of the Licensed Product. Any additional copies
in cd or paper media will be provided to Licensee at a cost of $75.00 per copy. Please contact our
Customer Call Center noted below.
5. LIMITED WARRANTY
Telcordia warrants that the media on which the Licensed Product is provided is free from defects
in materials and workmanship for 90 days. Licensee's sole remedy for breach of this warranty is
Telcordia's Product Replacement Plan described below. This warranty applies only to the original
Licensee.
6. DISCLAIMER OF WARRANTIES
EXCEPT AS SET FORTH ABOVE, THE LICENSED PRODUCT IS PROVIDED "AS IS"
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT
NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, EVEN IF TELCORDIA HAS BEEN MADE AWARE OF SUCH
PURPOSE, OR ANY WARRANTY AGAINST INFRINGEMENT OF PATENTS OR OTHER
INTELLECTUAL PROPERTY RIGHTS. LICENSEE ASSUMES RESPONSIBILITY FOR THE
SELECTION OF THE LICENSED PRODUCT TO ACHIEVE ITS INTENDED RESULTS, AND
FOR THE USE AND RESULTS OBTAINED FROM THE LICENSED PRODUCT.
7. LIMITATION OF LIABILITY
THE ENTIRE LIABILITY OF TELCORDIA, AND LICENSEE'S EXCLUSIVE REMEDY, IS THE
REPLACEMENT OF ANY LICENSED PRODUCT WHICH DOES NOT MEET THE TELCORDIA
LIMITED WARRANTY AND IS RETURNED TO TELCORDIA WITHIN 90 DAYS.
IN NO EVENT WILL TELCORDIA BE LIABLE TO LICENSEE FOR ANY DAMAGES,
INCLUDING DIRECT DAMAGES, LOST PROFITS, OR OTHER INDIRECT, SPECIAL,
INCIDENTAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS
AGREEMENT, EVEN IF TELCORDIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
THE WARRANTY GIVES LICENSEE SPECIFIC LEGAL RIGHTS, AND LICENSEE MAY ALSO
HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE. SOME STATES DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY TO LICENSEE.
8. THIRD PARTY PRODUCTS AND INFORMATION WARRANTY
Telcordia does not warrant Third Party products or information which Telcordia may use to
prepare the Licensed Product. Third Party products or information may be warranted by Third
Parties as expressly provided in the documentation accompanying the Third Party product or
information, if any. Licensee's exclusive remedy under any Third Party warranty is as provided in
the Third Party documentation accompanying the Third Party product or information, if any.
9. LICENSED PRODUCT REPLACEMENT PLAN
During the first 30 days after Licensee licenses the Telcordia Licensed Product, Telcordia will
replace at no charge any Licensed Product which is returned to Telcordia because its media is
defective in materials or workmanship. Returns for replacement of a defective Licensed Product
should be sent postpaid to Telcordia using the Return Policy procedures stated below.
10. RETURN POLICY
Licensed Product(s) may be returned within 30 days of receipt for Telcordia credit only. Returned
Licensed Products must be in their original packaging with all seals intact. Returns not found to
be defective in materials or workmanship will be subject to a 10% restocking fee. Licensed
Products that have been delivered electronically (downloaded from the SuperStore) are not
eligible for credits, refunds or returns, even if duplicative with Licensed Products that are the
subject of prior or contemporaneous orders. Licensee assumes all responsibility for managing its
inventory of Licensed Product(s).
11. TERMINATION
If Licensee or its User breaches one or more of its obligations under this Agreement, Telcordia
may elect at any time, in addition to any other remedy, to terminate the license and rights
granted. Prior to the termination, Telcordia must give Licensee two (2) months written notice
specifying the breach. Telcordia may terminate the license and rights granted if Licensee does
not remedy all breaches specified in the written notice within the two (2) month notice period.
Upon termination of the license and rights granted, Licensee shall destroy or return all Licensed
Product(s) and Documentation, including all copies, and certify in writing to Telcordia the
destruction or return.
12. PUBLICITY
Notwithstanding anything herein to the contrary, each party is prohibited from using in advertising,
publicity, promotion, marketing, or other similar activity, any name, trade name, trademark, or
other designation including any abbreviation, contraction or simulation of the other without the
prior, express, written permission of the other.
13. GENERAL
Export/Reexport. Licensee acknowledges that any commodities and/or technical data provided
under this Agreement is subject to the Export Administration Regulations (“the EAR”)
administered by the U.S. Commerce Department and that any export or re-export thereof must be
in compliance with the EAR. Licensee agrees that it shall not export or reexport, directly or
indirectly, either during the term of this Agreement or after its expiration, any commodities and/or
technical data (or direct products thereof) provided under this Agreement in any form to
destinations in Country Group E, (as specified in Supplement No. 1 to Part 740 of the EAR
http://www.access.gpo.gov/bis/ear/pdf/740spir.pdf, and as modified from time to time by the U.S.
Department of Commerce, or to recipients or destinations that are otherwise controlled or
embargoed under U.S. law.
Licensee acknowledges it is not a foreign national of Country Group E or a denied party on U.S.
export regulations.
Foreign Tax Payment. For a Licensee which is not a United States corporation, Telcordia will not
accept remittance of less than the full amount billed to Licensee as full payment unless:
a. Licensee withholds that amount to satisfy tax withholding requirements imposed by the
country (other than the United States) in which Licensee resides or in which Licensee has
accepted delivery of the Licensed Product; and
b. Licensee furnishes a receipt issued by the withholding tax jurisdiction and certifying
deposit of the withheld amount into its treasury or other tax depository to Telcordia's sole
credit, or a certification on Licensee's stationery that Licensee has deposited the withheld
amount into its tax jurisdiction's treasury or other tax depository to Telcordia's sole credit.
Further, to ensure the orderly processing of Telcordia tax returns, Licensee shall provide to
Telcordia a summary of all amounts withheld during the year no later than ten business days after
December 31 of each year.
Governing Law. This Agreement is a contract between Telcordia and the Licensee of the
Licensed Product. This contract is to be interpreted in the federal and state courts of New Jersey,
in accordance with the laws of the State of New Jersey without regard to its conflict of laws
principles, and the parties consent to the jurisdiction of such courts for this purpose.
Entire Agreement. Licensee further agree that this is the complete and exclusive statement of
the Agreement between Licensee and Telcordia and supersedes any proposal or prior
Agreement, oral or written, or any other communication between us relating to the subject matter
of this Agreement.
All questions about this Agreement should be directed to:
Telcordia Technologies, Inc.
Customer Service Center
One Telcordia Drive, RRC 1B180
Piscataway, NJ 08854
Phone: 1.866.672.6997 (USA)
+1.732.699.6700 (Worldwide)
END OF TERMS AND CONDITIONS
Rev. 4/07