This series of pre-loaded type substation chamber is mainly com-
posed of base, lateral plate, plate, door and top parts, the casing is divided into high pressure chamber, transformer and low pressure chamber. The enclosure protection class is IP23. Above base plate, plate, door and sealing head by cold rolling, by welding or fasteners, together, have enough mechanical strength. Body parts through special craft processing, both internal and external surface by spr-
aying high temperature baking form durable protective layer. Casing waterproof, sunscreen, rust and ventilation for the domestic and foreign most advanced structure.