HYBW-12/0.4 Prefabricated Substation (State Grid Standardized)

The structural layout is arranged in a “目” or “品” shape, divided into three sections: the high-voltage chamber, the low-voltage chamber, and the transformer chamber.

The high-voltage chamber is equipped with ring main units of ring-type and terminal-type switchgear. The inner door features an observation window and an electrical interlock device.

The low-voltage chamber uses GGD-type AC low-voltage switchgear, arranged by layers, functions, and compartments.

An energy metering box is designed on the exterior of the enclosure, allowing meter reading without opening the transformer cabinet door.

The transformer chamber features a double-door design, with the second door being mesh-type, enabling direct observation of the transformer status while providing safety protection.

GB/T 17467 — High Voltage/Low Voltage Prefabricated Substation

DL/T 537 — High Voltage/Low Voltage Prefabricated Substation

The enclosure of the box-type substation is made from metal sheets shaped by CNC equipment and GRC-type non-metallic materials, divided into three rooms: the high-voltage room, the transformer room, and the low-voltage room.