Why Should The Operating Power Supply Be Disconnected Before Overhauling The Operating Mechanism Of An Sf6 Circuit Breaker?
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Before performing maintenance on sf6 circuit breaker operating mechanism, the operating power should be disconnected first, because control voltage or energy storage may still remain in sf6 circuit breaker spring mechanism. If maintenance is performed directly, the electric drive components of the mechanism may operate automatically, which may pose an electric shock risk to maintenance personnel and may also cause the gears and couplings of the mechanism to rotate unintentionally, causing mechanical injury.
