The cable design conforms to the requirements of national standard GB/T12706-2008 and IEC60502 recommended by international Electrotechnical Commission. The normal operating temperature of the conductor of polyvinyl and XLPE insulated cable is 70â?? and 90â?? ,Xlpe cable not only has excellent electrical performance, high working temperature, large transmission capacity, but also has the advantages of simple structure, small outer diameter, light weight, easy installation and use, and unrestricted laying drop. It is widely used in industrial and mining enterprises and urban power grid.