The XBW-12/24 pre-installed box-type transformer substation is divided into three major parts: the high-voltage room, the transformer room, and the low-voltage room. It combines high-voltage switchgear, transformers, low-voltage switchgear, and other auxiliary electrical components to be able to adapt to outdoor operating environments and independently complete voltage transformation, power protection, control, and distribution functions. The product is designed in a variety of ways, with flexible and convenient combinations, suitable for distribution network nodes and terminals, and has the advantages of compact structure, safety and reliability, small land occupation, and low cost.