From left to right, the incoming cabinet - metering cabinet - PT cabinet - transformer cabinet (outgoing cabinet) - bus couple - transformer cabinet (outgoing cabinet) - PT cabinet - metering cabinet - incoming cabinet. The 1-way and 2-way high-voltage cabinets are symmetrically divided around the bus couple cabinet.
1) Incoming isolation cabinet: It is equipped with a high-voltage isolation switch to ensure the safety of high-voltage electrical appliances and devices during maintenance work.
2) High voltage incoming cabinet: refers to the built-in high voltage circuit breaker, mainly used for breaking and closing circuits, with relay protection function.
3) Voltage transformer cabinet (PT cabinet): It is a built-in voltage transformer that converts 10kV voltage into 100V and provides operating power for instruments and secondary control circuits.
4) Measurement cabinet: refers to the built-in voltage transformer, current transformer, electric energy meter, etc., used to measure the consumption of electric energy.
5) Feed cabinet: Refers to the outgoing cabinet, which distributes power to the transformer.
6) Contact cabinet: refers to the connection or disconnection of two high-voltage bus bars.
7) DC screen: Refers to the DC power supply that converts AC power into DC power to provide operation, measurement, and protection for high-voltage equipment and secondary circuits.
2. Low voltage distribution equipment
1) Substation and distribution room: low voltage incoming cabinet, feeder cabinet, contact cabinet, capacitor compensation cabinet, low voltage distribution cabinet, control cabinet, etc
2) Three level distribution boxes at the construction site: main distribution box (cabinet), distribution box, and switch box.
What are the high-voltage distribution equipment
2023 08/09
