scope:

This Standard:

a) defines the minimum performance requirements for single core traction feeder cables of cross sectional area 500mm², 630mm² or 935mm² operating up to a nominal voltage of 750V DC on the London Underground network;

b) covers limited fire hazard (LFH) cables which can be used in all areas.

The cables covered by this Standard shall be used outdoors (or both outdoors and indoors in the case of LFH cables) as a power cable forming any part of the DC traction power supply circuit originating within a substation and ending with connection to the traction conductor rail, a connection from the conductor rail to a depot shore supply system or as a connector between two lengths of conductor rail. This includes laying unprotected over track ballast.

This Standard does not apply to the Power Service Contractor.

This standard replaces 1-108 A2.

Purpose 

The purpose of this Standard is to define the minimum requirements for DC traction feeder cables