... 21/35(40.5)KV4). Voltage: 0.6/1kV, 1.8/3kV, 3.6/6kV, 6/10kV, 8.7/15kV, 12/20kV, 18/30kV, ... of cables U0/U(Um): * U0 is the rated power frequency voltage between conductor and earth or metallic screen for ... the cable is designed; * U is the rated power frequency voltage between conductors for which the cable is designed ... 185mm2, 240mm2, 300mm2, 400mm2, 500mm2, 630mm2, 800mm2 xlpe insulated power cables