Box substation, also known as pre-installed substation or pre-installed substation. It is a kind of high-voltage switching equipment, distribution Transformer, and low-voltage distribution device. According to a certain wiring scheme, the factory's prefabricated indoor and outdoor compact distribution equipment is arranged in one, and the transformer's decompression and low-voltage distribution functions are organically combined. Installed in a moisture-proof, rust-proof, dust-proof, rate-proof, fire-proof, anti-theft, heat-insulated, fully enclosed, movable steel box, especially suitable for the construction and transformation of urban networks, is a new type of rise after the civil substation. Substation. The box-type substation is suitable for mines, factories, oil and gas fields, and wind power stations. It replaces the original civil power distribution room and power distribution station and becomes a new type of variable power distribution device.