The rated voltage is 1, 10KV.The working temperature of polyvinyl chloride and polyethylene insulation should not exceed 70C. The cross-linked polyethylene insulation should not exceed 90℃. When short-circuited, the duration should not exceed 5s.The maximum temperature of the cable conductor, the polyvinyl chloride insulation shall not exceed 160C, the polyethylene insulation shall not exceed 150℃, the cross-linked polyethylene insulation shall not exceed 250C, and the cable laying temperature shall not be lower than -20℃.