... distribution lines--50HZ AC, rated voltage up to 0.6/1KV. Laying indoors, tunnels and pipelines, power cables ... than 1o times of cable overall diameter.Power Cable Performance(1) The long-time permissible operation temperature of conductor ... . Specification Size and Technical Data:TypeVVVoltage Grade0.6/1kVNominal Section(mm²)1.5, 2.5, 4 ... , 6, 10, 16, 25, 35, 50, 70, 95, 120, ...