A box-type substation (also known as a prefabricated substation) is a compact power distribution unit prefabricated in a factory for either indoor or outdoor use. It integrates high-voltage switchgear, a distribution transformer, and low-voltage distribution equipment according to a specific wiring scheme, effectively combining voltage step-down and low-voltage distribution functions. The equipment is housed within a fully enclosed, movable steel enclosure that is moisture-proof, rust-proof, dust-proof, rodent-proof, fire-resistant, theft-proof, and thermally insulated, making it particularly suitable for the construction and renovation of urban power grids.
