BS 7870-3.40:2023

LV and MV polymeric insulated cables for use by distribution and generation utilities. Distribution cables of rated voltage 0.6/1 (1.2) kV. Specification | Status: Current

1 Scope This section of BS 7870 specifies requirements for the construction, dimensions and mechanical and electrical properties of copper wire waveform cables with solid aluminium or stranded copper conductors, XLPE insulation and PVC oversheath having a rated voltage of 0.6/1(1.2) kV. It specifies requirements for the following types of cable:

1. a) 3-core, 3-phase, with a concentric neutral/earth conductor of copper wires bedded on a single rubber layer; and
2. b) 4-core, 3-phase and a separate neutral, with a concentric earth conductor of copper wires bedded on a single rubber layer.

This section of BS 7870 is applicable to cables designed for a maximum continuous conductor operating temperature of 80 °C and for a maximum short circuit conductor temperature of 250 °C.

NOTE Guidance on type testing is given in Annex B.