Mobile cable reels are widely used in steel smelting, petrochemical, electric power, electronics, railways, construction sites, airports, mines, mining plants, water supply and drainage treatment plants, as well as ports, shopping malls, hotels and other places as the power supply of imported equipment. Safety configuration such as sensitive leakage protector, overheat protector and plug-resistant dust-proof and waterproof sockets meet the needs of safety, convenience and practicality.