... of conductor: 25~630mm2 For XLPE insulated power cable, either chemical method or physical method is employer ... of paper, PVC or PE insulated power cable. The cable has the advantage of simplicity in construction, ... the system in which the cable is used, and is expressed in the form of Uo/U (Um)KV ... and earth or metallic scieen, for which the cable designed; U-The rated power-frequency voltage between ...