The Metropolitan Water Reclamation District of Greater Chicago
General Specifications
SECTION 26 0513
MEDIUM-VOLTAGE CABLES
PART 1 - GENERAL
1.1
SUMMARY
A.
Section Includes:
1. Medium voltage cables.
2. Potheads.
3. Cable terminations.
4. Cast-epoxy cable termination.
5. Modular cable termination.
6. Tape termination.
7. Fireproofing tape.
8. Medium-voltage cable installation.
B.
Related Documents:
1. Applicable provisions of Division 00 – Procurement and Contracting Requirements
shall govern work of this specification section.
C.
Related Sections:
1. Applicable provisions of Division 01 – General Requirements shall govern work of
this specification section.
2. Applicable provisions of MWRDGC General and Detailed Technical Specifications
utilized for this project.
1.2
REFERENCES
A.
MWRD projects located within the City of Chicago limits shall conform to the City of
Chicago Building Code and MWRD projects located outside the City of Chicago limits
shall conform to Federal, State or Local building code requirements adopted by that
specific municipality.
B.
City of Chicago Building Code:
1. Chapter 18-27 - Chicago Electrical Code.
C.
Institute of Electrical and Electronics Engineers (IEEE):
1. IEEE 48 - Standard Test Procedures and Requirements for Alternating-Current
Cable Terminations 2.5 kV Through 765 kV.
2. IEEE C2 - National Electrical Safety Code.
D.
International Electrical Testing Association (IETA):
1. NETA ATS - Acceptance Testing Specifications for Electrical Power Distribution
Equipment and Systems.
2012 EDITION
26 0513 - 1
MEDIUM-VOLTAGE CABLES
The Metropolitan Water Reclamation District of Greater Chicago
General Specifications
E.
1.3
National Electrical Manufacturers Association (NEMA):
1. NEMA WC3 - Rubber Insulated Wire and Cable for the Transmission and
Distribution of Electrical Energy.
2. NEMA WC5 - Thermoplastic-Insulated Wire and Cable for the Transmission and
Distribution of Electrical Energy.
3. NEMA WC7 - Cross-Linked Thermosetting Polyethylene Insulated Wire and Cable
for the Transmission and Distribution of Electric Energy.
4. NEMA WC8 - Ethylene Propylene Rubber Insulated Wire and Cable for the
Transmission and Distribution of Electrical Energy.
SUBMITTALS
A.
1.4
Section 01 3300 - Submittal Procedures: Requirements for submittals.
1. Product Data: Submit for cable, terminations, and accessories.
2. Samples: Submit two (2) each size cable, 24 inches in length.
a. Select each length to include complete set of manufacturer markings.
b. Attach tag indicating cable size and application information.
3. Test Reports: Indicate results of cable test in tabular form and in plots of current
versus voltage for incremental voltage steps, and current versus time at 30 second
intervals at maximum voltage.
CLOSEOUT SUBMITTALS
A.
Section 01 7000 - Execution and Closeout Requirements: Closeout procedures.
B.
Section 01 7839 - Project Record Documents: Record actual sizes and locations of
cables.
C.
Section 01 7823 - Operation and Maintenance Manuals: Submit instructions for testing
and cleaning cable and accessories.
1.5
QUALIFICATIONS
A.
1.6
Manufacturer: Company specializing in manufacturing products specified in this
section with minimum five (5) years documented experience and with service facilities
within 100 miles of Project.
DELIVERY, STORAGE, AND HANDLING
A.
Section 01 6000 – Product Requirements: Product storage and handling requirements.
B.
Protect cable ends from entrance of moisture.
PART 2 - PRODUCTS
2.1
MEDIUM VOLTAGE CABLE
2012 EDITION
26 0513 - 2
MEDIUM-VOLTAGE CABLES
The Metropolitan Water Reclamation District of Greater Chicago
General Specifications
A.
Product Description: NEMA WC 7, cross-linked polyethylene 133 percent insulated
cable.
B.
Voltage: 5kV or 15 kV, as indicated on Drawings or as specified in Detailed
Specification.
C.
Conductor: Copper, compact round, stranded, with wire-woven conductor shield.
D.
Construction: Single conductor with metal tape insulation shielding.
E.
Jacket: PVC, 125 mils minimum thickness.
F.
Armor Material: Steel.
G.
Armor Design: Interlocked metal tape.
H.
Armor Jacket: PVC.
2.2
POTHEADS
A.
2.3
Product Description:
1. IEEE 48, Class 1, Termination.
2. Pothead with porcelain insulators, cable connector and aerial lug, sealed cable
entrance and support, and insulating compound.
CABLE TERMINATIONS
A.
2.4
Product Description:
1. IEEE 48, Class 2, Porcelain Insulator Cable Terminator.
2. Provide in kit form.
CAST-EPOXY CABLE TERMINATION
A.
2.5
Product Description:
1. IEEE 48, Class 1, Cast Epoxy Cable Termination.
2. Provide in kit form.
3. Include the following within the kit:
a. Stress cone.
b. Shielded ground connection.
c. Wet porcelain rain shield for outdoor units.
d. Epoxy resin molding material.
e. Accessories and molds required for proper application.
MODULAR CABLE TERMINATION
A.
Product Description:
1. IEEE 48, Class 1, Molded-Rubber Cable Termination.
2. Provide in kit form.
3. Provide the following within the kit:
2012 EDITION
26 0513 - 3
MEDIUM-VOLTAGE CABLES
The Metropolitan Water Reclamation District of Greater Chicago
General Specifications
a.
b.
c.
d.
e.
f.
2.6
Stress cone.
Ground clamp.
Non-tracking rubber skirts
Load break connector.
Rubber cap.
Aerial lug.
TAPE TERMINATION
A.
2.7
Product Description:
1. IEEE 48; Class 1, Tape Termination Kit including the following:
a. Semi-conductive tape.
b. Stress control tape.
c. Splicing tape.
d. Vinyl plastic tape.
e. Stress cone.
f. Mechanical ground straps.
g. Cable preparation kit.
FIREPROOFING TAPE
A.
Product Description: 30-mil thickness, flexible, polymeric elastomer tape.
PART 3 - EXECUTION
3.1
EXAMINATION
A.
Section 01 3115 – Project Coordination and Meetings: Coordination and project
conditions.
B.
Verify conduit, duct, trench, and manholes are ready to receive cable.
C.
Verify routing and termination locations of cable prior to rough-in.
3.2
PREPARATION
A.
3.3
Use swab to clean conduits and ducts before pulling cables.
EXISTING WORK
A.
Remove abandoned medium-voltage cable.
B.
Maintain access to existing medium-voltage cable and other installations remaining
active and requiring access. Modify installation or provide access panel.
C.
Extend existing medium-voltage cable installations using materials and methods
compatible with existing electrical installations, or as specified.
2012 EDITION
26 0513 - 4
MEDIUM-VOLTAGE CABLES
The Metropolitan Water Reclamation District of Greater Chicago
General Specifications
D.
3.4
Clean and repair existing medium-voltage cable to remain or to be re-installed.
INSTALLATION
A.
Avoid abrasion and other damage to cables during installation.
B.
Use suitable manufacturer approved lubricants and pulling equipment.
C.
Sustain cable pulling tensions and bending radii below manufacturer’s recommended
limits.
D.
Ground cable shield at each termination and splice.
E.
Install cables in manholes along wall providing longest route.
F.
Arrange cable in manholes to avoid interference with duct entrances.
G.
Fireproof cables in manholes using fireproofing tape in half-lapped wrapping. Extend
fireproofing one (1) inch into duct.
3.5
FIELD QUALITY CONTROL
A.
Section 01 4000 - Quality Requirements: Field inspecting, testing, adjusting, and
balancing.
B.
Inspect exposed cable sections for physical damage.
C.
Inspect cable for proper connections.
D.
Inspect shield grounding, cable supports, and terminations for proper installation.
E.
Inspect and test in accordance with NETA ATS, except Section 4.
F.
Perform inspections and tests listed in NETA ATS, Section 7.3.
3.6
PROTECTION OF INSTALLED CONSTRUCTION
A.
Section 01 7000 - Execution and Closeout Requirements: Protecting installed
construction.
B.
Protect installed cables from entrance of moisture.
END OF SECTION
2012 EDITION
26 0513 - 5
MEDIUM-VOLTAGE CABLES