General Construction Specifications
PART 1 - GENERAL
01 SECTION INCLUDES
A. Medium voltage cable and accessories.
02 RELATED SECTIONS
A. Section 02225 - Trenching: Trenching, excavation, and backfill.
03 REFERENCES
A. ANSI/IEEE C2 - National Electric Safety Code.
B. IEEE 48 - Test Procedures and requirements for High-Voltage Alternating-Current Cable Terminations.
C. NEMA WC3 - Rubber-Insulated Wire and Cable for the Transmission and Distribution of Electrical Energy.
D. NEMA WC8 - Ethylene-Propylene-Rubber-Insulated Wire and Cable for the Transmission and Distribution of Electrical Energy.
1.02 SUBMITTALS
A. Submit product data under the provisions of applicable Sections of Division 1.
B. Submit product data indicating cable and accessory construction, materials, and ratings.
1.03 PROJECT RECORD DOCUMENTS
A. Submit record documents under provisions of applicable Sections of Division 1.
B. Accurately record exact sizes and locations of cables.
1.04 QUALITY ASSURANCE
A. Manufacturer: Company specializing in medium voltage cable and accessories with minimum eight years documented experience.
B. Installer: Company specializing in installation of medium voltage cable with minimum eight years documented experience.
1.05 REGULATORY REQUIREMENTS
A. Conform to ANSI/IEEE C2.
1.06 DELIVERY, STORAGE, AND HANDLING
A. Deliver products to site under provisions of applicable Sections of Division 1.
B. Store and protect products under provisions of applicable Sections of Division 1.
C. Accept cable and accessories on site in manufacturer's packages and inspect for damage.
D. Protect cable and accessories from weather by covering with opaque plastic or canvas; provide ventilation to prevent condensation.
PART 2 - PRODUCTS
04 MANUFACTURERS
A. Cabelec
B. Okonite
C. Pirelli
D. Substitutions: Under provisions of applicable Sections of Division 1.
2.02 MEDIUM VOLTAGE CABLE
A. Cable: Insulated cable rated 15kV, ungrounded.
B. Cable: Insulated cable rated 5kV, ungrounded.
C. Conductor: Copper, concentric, stranded, with conductor shield.
D. Insulation: NEMA WC8; ethylene propylene rubber.
2.03 ACCEPTABLE MANUFACTURERS - CABLE TERMINATIONS
A. Raychem Corp.
B. 3M Company
C. Substitutions: Under provisions of applicable Sections of Division 1.
2.04 CABLE TERMINATIONS
A. Modular Molded Rubber Termination: IEEE 48; Class 1. Kit form, suitable for use with cable specified, including stress cone, ground clamp, non-tracking rubber skirts, connector, rubber cap, and lug; equal to 3M 5620K series.
B. Porcelain Insulator Cable Terminators: IEEE 48; Class 1. Kit form, suitable for use with cable specified; equal to 3M 5900 series.
PART 3 - EXECUTION
05 EXAMINATION
A. Verify that conduit is ready to receive work.
B. Verify field measurements are as shown on Drawings.
C. Beginning of installation means installer accepts existing conditions.
06 PREPARATION
A. Thoroughly swab conduits to remove foreign material before pulling cables.
07 INSTALLATION
A. Install cable and terminations in accordance with manufacturer's instructions and to ANSI/IEEE C2. No splices shall be permitted.
B. Ground cable shield at each termination if shielded cable is used.
C. Use modular molded rubber terminations except for exposed exterior terminations which shall be made with porcelain insulator cable terminators.
D. Pull cables using suitable lubricants and cable pulling equipment. Do not exceed cable pulling tensions and bending radius recommended by manufacturer.
E. Avoid abrasion and other damage to cables during installation.
08 FIELD QUALITY CONTROL
A. Field inspection and testing will be performed under provisions of applicable Sections of Division 1.
B. Inspect exposed cable sections for physical damage. Verify that cable is connected according to Drawings and that shield grounding, cable support, and terminations are properly installed.
C. Test continuity of all metallic shields using an ohmmeter.
D. Perform DC high potential test of each conductor, with other conductors grounded, to NEMA WC8. Apply test voltage to conductors in at least eight equal increments to maximum test voltage. Record leakage current at each increment, allowing for charging current decay. Hold maximum test voltage for ten minutes.
E. Record results of DC high potential tests in tabular form and in plots of current versus voltage for incremental voltage steps, and current versus time (30 second intervals) at maximum voltage. Submit test results to the Architect.
END OF SECTION
