ZoneMaster® PE
300 and 180
Product Specifications
SPECIFICATION STANDARDS ON SURGE PROTECTIVE DEVICES
FOR USE IN LOW VOLTAGE AC POWER CIRCUITS –
HEAVY DUTY FACILITY ENTRANCE AND MAIN PANEL PROTECTION
PART 1 GENERAL
1.1
SCOPE
These specifications describe pertinent material requirements and installation practices for
LV (Low Voltage) AC Power Panel Surge Protective Devices (SPD), also known as Transient
voltage Surge Suppressors or TVSS.
1.2
APPLICABILITY
The Surge Protective Devices detailed herein shall be fully applicable for the purpose of
protecting all facility AC electrical circuits from the hazardous effects of transient voltages.
These transients may be generated externally by lightning induced energies, utility load factor
corrections, and substation switching or they can be internally generated due to inductive and/or
capacitive load switching.
1.3
SUITABILITY
Surge Protective Devices shall be suitable for all service entrance and sub-panel locations as
designated on the power one-line diagrams, prints, or schedules furnished by the electrical
engineer. Products are to be configured for parallel installation – no series designs are to be
considered acceptable. Products shall be designed to retrofit onto all of the major brands of
branch panels. The product shall be designed to become integral to the new or existing
panelboard. The product shall also be designed to allow installation as a stand-alone device
allowing mounting adjacent to the panelboard. Installation is to be accomplished by a qualified
electrical contractor.
1.3.1 Definition of Installation Locations
Facility entrance and main distribution locations shall be defined per ANSI/IEEE C62.41 location
Category C3.
1.3.2 Agency Approvals
The Surge Protection Devices and associated hardware must be Listed to UL1449 Second Edition, as
defined by ANSI/NFPA 70-2002.
Surge Protection Devices with filters must be UL1283 Listed as an Electromagnetic Interference Filter.
1.4
REFERENCE STANDARDS AND PUBLICATIONS
The following standards and publications are referenced throughout this specification and shall
apply where relevant.
1.4.1
UL1449 Second Edition – Transient Voltage Surge Suppression
1.4.2
UL1283 – Electromagnetic Interference Filters
1.5
1.4.3
ANSI/IEEE C62.41 – Recommended Practice on Surge Voltages in Low Voltage AC
Power Circuits
1.4.4
ANSI/IEEE C62.33 – Standard Test Specifications for Varistor Surge Protective Devices
1.4.5
ANSI/IEEE C62.45 – IEEE Guide of Surge Testing for Equipment Connected to
Low Voltage AC Power Circuits
MANDATORY SUBMITTAL REQUIREMENTS
1.5.1
All Applicable Product Literature
1.5.2
Product Installation Instructions
1.5.3
Product Material List & Part Numbers
1.5.4
Product 10 Year Warranty Statement
1.5.5
Manufacturer’s Certificate of Compliance (Ref. Published Specifications)
PART 2 PRODUCT
2.1
MANUFACTURER’S QUALIFICATIONS
All Surge Protective Devices shall be manufactured by a Company engaged in the design,
development, and manufacture of such devices for electrical and electronic equipment
and systems.
The manufacturer shall offer repair or replacement service for all materials and components
incorporated in the Surge Protective Devices.
Technical assistance shall be provided by the manufacturer through the efforts of a factory
representative or a local distributor and via a factory staffed toll-free technical hotline.
The manufacturer will provide a toll-free Customer Service number to facilitate all inquiries
regarding product returns, warranty claims, purchasing requirements and payment or
credit issues.
2.2
WARRANTY
All Surge Protective Devices, associated hardware, and supporting components shall be
warranted to be free from defects in materials and workmanship, under normal use and in
accordance with the instructions provided, for a period of ten years. (Excludes installation
labor and site preparations.)
Any component or subassembly contained within the Suppressor that shows evidence of
failure or incorrect operation, during the ten-year warranty period, shall be replaced by the
manufacturer without question, this includes lightning related failures. No repairs are to be
acceptable - only new and unused materials are to be allowed.
All surge protective devices, subassemblies, and components are to be 100% tested and
certified by the manufacturer to meet their published performance parameters. A certificate
of compliance shall be provided with all goods delivered.
2.3
ELECTROMECHANICAL PACKAGING
2.3.1 Enclosures
Enclosures shall be NEMA 1 Rated. Housing shall be constructed of 16-gauge metal and shall meet
UL67 requirements.
2.3.2 Electrical Contacts
All surge-carrying connections are to be constructed of heavy-duty low impedance contacts. No plug-in
suppression components with friction contacts are to be allowed.
The only wiring connections allowed within the suppressor are those connecting the device to the service
panel and those carrying low voltage/low current for status indication.
2.3.3 Field Replaceable Protection Modules
Modules shall be designed for easy field replacement and shall have color coded labels to identify
specific applications. Module plastics shall have a UL94-5V flame class rating. Modules shall not be
potted or otherwise encapsulated without adequate safety fusing (to prevent explosive failures).
Modules shall contain both thermal and short circuit safety fusing. Modules shall contain on-board
diagnostics and status indication, and be equipped to provide remote monitoring capabilities, which are
completely isolated from surge currents.
Modules, which protect between Neutral and Ground, shall contain a Visual Warning of HIGH NEUTRAL
to GROUND Voltages.
Modules shall be UL Recognized Components.
2.4
ELECTRICAL CONFIGURATONS
Surge Protective Devices shall be of shunt design configured for the specific type and voltage of
electrical service required. Protection is to be provided for all modes: L-N, L-G, L-L, and N-G.
2.4.1
300kA Rated Units -- Heavy Duty Service Entrance Protection
Wiremold
Sales Model
ZCM120T
ZCM120Y
ZCM277Y
ELECTRICAL SERVICE
120/240V, Single ∅, 3-Wire, 300kA
120/208V, 3∅, 4-Wire Wye, 300kA
277/480V, 3∅, 4-Wire Wye, 300kA
DIMENSIONS: 20" x 16" x 5 3/4" [51cm x 41cm x 15cm] Weight: Approx. 25 lbs. [55kg]
2.4.2
180kA Rated Units -- Main/Branch Service Panel Protection
Wiremold
Sales Model
ZBM120T
ZBM120Y
ZBM277Y
ELECTRICAL SERVICE
120/240V, Single ∅, 3-Wire, 180kA
120/208V, 3∅, 4-Wire Wye, 180kA
277/480V, 3∅, 4-Wire Wye, 180kA
DIMENSIONS: 20" x 16" x 5 3/4" [51cm x 41cm x 15cm] Weight: Approx. 25 lbs. [55kg]
2.5
PERFORMANCE
2.5.1 Operating Voltage
The nominal voltage rating and Maximum Continuous Operating Voltage (MCOV) shall have the values
shown in Table 1 below:
Nominal Voltage Rating (Vrms)
120
277
[TABLE 1]
MCOV (Vrms)
150
320
2.5.2 Listing
The Surge Protective Device and associated hardware must be Listed to UL1449 Second Edition,
as defined by ANSI/NFPA 70-2002.
Surge Protective Devices with filters shall be Listed to UL1283 – Electromagnetic Interference Filters.
The suppression voltage of the complete panel mount surge protective device shall be assessed by UL;
these figures must not exceed the values shown in Table 2. UL suppression voltage ratings for modules
or subassemblies are not acceptable.
Service Voltage
120
277
UL1449 2nd Edition Suppression Voltage
300kA
180kA
400V
400V
800V
800V
[TABLE 2]
2.5.3 Environmental
Operating Temperature Range: -40 degrees C to +85 degrees C
Operating Humidity Range:
0 to 95% (non-condensing)
2.5.4 Maximum Single Withstand Surge Current
Surge Protective Devices (including all fusing and overcurrent protection) shall be independently tested
for surge currents withstand per Table 3. The failure of, or operation of, any fuse or overcurrent
device during this test is not permissible.
Actual Independent Laboratory Testing Including all Safety Fusing
Surge Protection Device Rating Independently Tested Current
300kA Rated Units
<200kA
180kA Rated Units
<90kA
[TABLE 3]
Compliance To This Specification Must Be Provided Upon Request
From An Independent Testing Laboratory
2.5.5 Filtering Performance
All Surge Protection Devices with filter options shall be UL1283 Listed. The extended range power filter
shall be capable of EMI/RFI noise attenuation of –75dB maximum 100kHz to 100MHz.
2.5.6 “Joule Ratings” and “Response Times”
The selection of Surge Protective Devices shall not be made solely, or in part, based upon either of these
two ambiguous specifications. These terms are not recognized by ANSI, NEMA, IEEE, or IEC Standards
as legitimate suppressor performance parameters. The key selection elements of a quality suppressor
are its low clamping capability and its maximum surge handling capacity.
2.6
SAFETY
2.6.1 General
Suppressors shall be UL1449 Second Edition Listed. Suppressors shall be 100% tested and certified,
shall have no holdover current, and shall provide an external monitoring capability. Suppressors shall be
self-restoring and fully automatic. Suppressor modules shall be of a fail-safe design.
2.6.2 Fusing
Surge Protective Devices shall contain both (within each replaceable protection module) accurate
thermal and short circuit safety fusing. The fusing mechanisms employed must effectively coordinate their
performance in conjunction with the full surge handling capabilities of the suppressor. Replacement of
any suppression module requires mandatory and simultaneous replacement of all safety fuses and
individual diagnostics associated with that module.
2.7
STATUS INDICATION AND DIAGNOSTICS
2.7.1 On-Board Diagnostics/Indication
Surge Protection Devices shall provide (on-board) visual status of their operational readiness by both
electrical and mechanical indication. Separate visual indication is to be provided for both stages of the
(two-stage redundant) protection module. Surge Protection Devices shall indicate their operational
capability even though AC power may not be present.
Surge Protection Devices shall incorporate a visual warning indication for the presence of high neutral-toground voltages. Surge Protection Devices shall include a multi-mode surge counter that records surge
current impulses diverted to neutral or ground by the surge protection device, and include an audible
alarm to indicate any suppression component failure within the unit.
2.7.2 Remote Monitoring
Surge Protection Devices shall be equipped with normally open and normally closed dry contacts
to interface with optional remote monitoring unit (RMU) and/or other environmental and building
management systems. The optional RMU shall provide both audio and visual indication of any fault
that may occur in the suppressor. A 250’ length of spooled cable, with appropriate interface terminations,
will be provided as optional equipment with each RMU purchased.
2.8
MAINTENANCE
The Surge Protection Device shall require no routine maintenance; however, it is recommended
that the device be inspected at least once a month to ensure correct operation and wiring
integrity. In the case of any faults found, consult with a qualified electrician and/or contact the
factory via the toll-free technical hot line.
2.9
ACCEPTABLE MANUFACTURER
2.9.1 Manufacturer
The Wiremold Company.
PART 3 EXECUTION
3.1
INSTALLATION
Surge Protection Devices shall be installed at the first switchboard panel board, transfer switch,
etc., that the service encounters as it enters the facility. Installation shall be per all applicable
and pertinent documents supplied by the electrical engineer. Actual location shall be per
applicable ANSI/IEEE standards.
WARNING: Terminals marked L1, L2, L3, N, and GND (where relevant)
must be connected respectively to phase(s) neutral and ground.
Failure to comply may result in danger or damage.
Surge Protection Devices shall be mounted as close as possible to the panel being protected
in a position that will minimize lead lengths between the suppressor and the control breaker(s)
to which the suppressor connects. Utilize conduit, preferably metallic, to accomplish these
connections with a recommended minimum wire size of #8 AWG or a maximum of #4 AWG
(for ease of Dressing). Suppressor leads shall not be extended beyond the manufacturer’s
recommended maximum length without specific engineering approval. The rationale for this is
the longer the connecting leads between the Surge Protection Device and the power panel, the
higher the residual transient voltage. The recommended length is a maximum of 19" [500mm]
and the ideal is 10" [250mm].
Surge Protection Devices shall be connected to the service panel being protected via a circuit
breaker for each phase, based on the number of poles and the connecting wire size, with a
60 amp maximum.
Surge Protection Devices shall be installed in a neat, workmanlike manner. Lead dress shall
be as short and as straight as possible and be consistent with recommended industry practices
for the application on which these units are installed. Bind the phase, neutral, and ground
conductors tightly, over the entire run, from the suppressor to the service panel and always
use the shortest length of connecting cable as possible.
Supplementary grounding and bonding connections required between the bonding bus or
ground plane for each equipment cluster and other locations as indicated herein shall be
accomplished using #6 AWG core copper conductor and approved connections unless
otherwise noted.
NOTES
NOTES
Wiremold / Legrand
U.S. and International:
60 Woodlawn Street • West Hartford, CT 06110
1-800-621-0049 • FAX: 860-232-2062 • Outside U.S.: 860-233-6251
Canada:
570 Applewood Crescent • Vaughan, Ontario L4K 4B4
1-800-723-5175 • FAX: 905-738-9721
2005 The Wiremold Company All Rights Reserved
ED1183R1 – Updated January 2005 – For latest specs visit www.wiremold.com