Fault Analysis Of Undervoltage Release Of Sf6 Circuit Breaker Operating Mechanism

sf6 circuit breaker operating mechanism There is no short circuit or grounding phenomenon during operation, nor is there any overload, but it trips inexplicably. Generally, the undervoltage release or intelligent controller is faulty. The inspection method is to manually force the live armature of the undervoltage release coil to be attracted. If sf6 circuit breaker spring mechanism does not disconnect after closing, it means that the undervoltage release is faulty. The solution is to remove the undervoltage release. At this time, the frame circuit breaker can work normally. According to actual use needs, consider replacing a new undervoltage release module.