BS 7870-3.21:2011

LV and MV polymeric insulated cables for use by distribution and generation utilities. Specification for distribution cables of rated voltage 0.6/1 kV. XLPE insulated split concentric cables with copper or aluminium conductors | Status: Confirmed, Current

1 Scope This section of BS 7870 specifies requirements for the construction, dimensions and mechanical and electrical properties of split concentric service cables having a rated voltage of 0.6/1(1.2) kV. It specifies requirements for the following types of cable:

1. a) single phase or 3-phase;
2. b) stranded copper or solid aluminium conductors;
3. c) XLPE insulation and PVC oversheath.

This section of BS 7870 is applicable to cables that are designed for a maximum continuous conductor operating temperature of 90 °C and for a maximum short circuit conductor temperature of 250 °C.