Water-cooled cable is a large current transmission cable with hollow water, used in industrial resistance furnaces, medium frequency induction furnaces, monocrystalline silicon furnaces, polycrystalline silicon remelting furnaces, electric arc furnaces, refining furnaces, sapphire annealing furnaces, heat treatment furnaces, experimental furnaces and other equipment of high current transmission, generally consists of cable head, copper strand, rubber bushing, special fastener steel band, the use of water-cooled cable to reduce the heat of the cable, transfer greater current, improve the electric furnace transmission power.