Reasons for high-voltage vacuum circuit breaker refusal to open and close

The high-voltage vacuum circuit breaker is one of the key electrical appliances related to whether the power system can be effectively controlled. Only by maintaining its good operating state can the normal and efficient operation of the circuit system be ensured. According to the key functions of the circuit breaker, it is necessary to detect the operating status of the vacuum circuit breaker in real time during the work, and timely find out the problems and take corresponding measures to solve them. This article shares with you the handling methods of on-site faults of high-voltage vacuum circuit breakers, hoping to provide reference for the majority of netizens.

The main reasons for the refusal to operate the vacuum circuit breaker are the secondary circuit failure of the circuit breaker and the failure of the mechanical part. To be solved according to different reasons. After checking that there is no fault in the secondary circuit, observe the length of the gap between the universal joint shaft head connected to the main arm of the operating mechanism. Sometimes the gap can still make the operating machine run normally when the gap is too large. In such a situation, it is easy to make the opening and closing link of the circuit breaker unable to be driven, and eventually the circuit breaker cannot be opened and closed regularly, so the gap should be maintained within a certain range.