Analysis Of The Closing Status Of The Grounding Switch Inside The High-voltage Distribution Cabinet

In the overall structure of a high-voltage switchgear, the grounding switch, as an essential mechanical switching element, serves to connect to the grounding of the busbar and outgoing circuits. When the internal grounding switch of switch Powbinet is in the closed position, its moving contact is fully in contact with the grounding busbar, forming a clear grounding path. This state directly affects subsequent equipment operation.

The trolley-type circuit breaker in the switchgear is designed with the grounding switch position interlocked. The grounding switch being in the closed position means the circuit breaker cannot complete the opening or closing action. This mechanical interaction stems from the internal design logic of the switchgear, designed to limit the application of load current to the power circuit or the execution of closing operations when the grounding switch is in the grounding connection position.