... transmission and distribution lines--50HZ AC, rated voltage up to 0.6/1KV. Laying indoors, tunnels and pipelines, power cables can not withstand ... laying cable, the environmental temperature should not be less than 0°C, for bend radius, should be not less than 1o ... laid, and the ambient temperature shall not be lower than 0 centigrade degree.(4) Perfect chemical stability, resistant against acids, ...