The cable is used to transmit power on the power transmit power and distribution line of A.C.50Hz,rated voltage 35kv or lower .Incomparison with PVC insulation cable,it boasts not only excellent electric character,mechanical character,heat and aging-resistant character environmentalstresss-resistant character and chemical orrosionmental character ,but simple structure,lightweight,by laying drop,and high temperature allowance for longterm working as well.