The following are methods for handling accidents and abnormalities related to isolating switches:(1) If an isolating switch fails to operate (refuses to open or close), take the following steps:① For mechanically operated isolating switches that fail to open or close, check whether the circuit breaker is open, whether the mechanical interlock of the isolating switch has been released, whether the transmission mechanism is jammed, and whether the contacts are rusted or welded. Gently wiggle the o
11/10/2025
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