The ZGS11-□-12/0.4 series prefabricated American-style pad-mounted substation, commonly referred to as an “American substation,” “American-type pad-mounted substation,” or “combined transformer,” is an outdoor pad-mounted substation in which the transformer core, high-voltage load switch, fuses, and other components are all housed within a single transformer oil tank, while the low-voltage compartment is enclosed in a single, integral outdoor cabinet that is further divided into metering, incoming line, outgoing line, and capacitor compartments, all compactly assembled together.

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