ZGS series combined transformer is American box transformer, which is a series of products developed according to the needs of urban and rural power grid construction development and transformation. It is a transformer that combines the corresponding auxiliary equipment such as transformer body, switchgear, fuse, tap changer, low voltage distribution device, etc., which can meet the user's power metering, reactive power compensation, low voltage shunt and other configuration requirements. ZGS type combined transformer as an AC 50Hz, 6~10kV power grid, rated capacity of 30~1600kVA independent complete sets of power distribution devices, can be used outdoors, can also be used indoors. Widely used in industrial parks, urban residential areas, commercial centers, road lighting, high-rise buildings and temporary construction sites and other places, its advantages are: environmental protection, small footprint, convenient installation.