American-Type Substation (ZGS Pad-Mounted)

A pad-mounted compact substation in the American layout, built around an oil-immersed transformer with the MV load-break switch and fuse protection immersed directly inside the transformer tank. A double-tank horizontal arrangement keeps HV and transformer sections independently maintainable. Fully sealed and insulated (no clearance required), occupying only ~1/3–1/5 of the footprint of an equivalent European box substation — ideal for residential areas, malls, airports, railways and renewable sites.