... conductor and earth or metallic screen for which the cable is designed; * U is the rated power ... frequency voltage between conductors for which the cable is designed; * Um is the maximum value of ... Application: For laying indoors, in tunnel or cable trench with large difference of level able to bear ... 150mm2, 185mm2, 240mm2, 300mm2, 400mm2, 500mm2, 630mm2, 800mm2 xlpe insulated power cables