scope:

On the D.C. Electrified Lines , this specification applies to all new single and three core polymeric insulated cables.

On the A.C. Electrified Lines., this specification applies to all new single and two core polymeric insulated 25 kV cables and associated accessories.

PURPOSE

This Product Specification states the requirements for the design, manufacture, testing at works and at site, and delivery ex works of:

(a) 6.35/11 kV, 12.7/22 kV and 19/33 kV single and three core polymeric cables;

(b) 25 kV two core concentric and single core, polymeric cables;

and associated complete terminations, lugs and joints (termed accessories).

The 6.35/11 kV, 12.7/22 kV and 19/33 kV cables are used to distribute three phase a.c. electrical power supplies at nominal system voltages of 11 kV, 22 kV and 33 kV to Railtrack traction substations on D.C. Electrified Lines.

The 25 kV two core concentric cables are mainly used to deliver 25 kV single phase electrical power supplies, typically, to Railtrack feeder stations on A.C. Electrified Lines.

The 25 kV single core cables are mainly used to carry 25 kV electrical power supplies from Railtrack track-side switching stations to the overhead line equipment on A.C. Electrified Lines.

The document is to be read in conjunction with the relevant procurement specification.