An article to let you know, high and low voltage distribution cabinets in the circuit breaker false tripping causes
Release time:
2024-06-25
Circuit breaker is one of the important electrical equipment in the high and low voltage distribution cabinet, if the circuit breaker fails, it will directly affect the operation and use of other electrical equipment and even the whole distribution cabinet, so if the circuit breaker error tripping fault occurs, we must find out the reason and make timely treatment to protect other electrical equipment and the whole distribution cabinet.
High and low voltage distribution cabinet
1. Relay protection is not acted, the current and voltage fluctuation caused by no reason in the power grid can be judged as circuit breaker operating mechanism error.
2. Incorrect relay protection value or incorrect relay protection wiring, current transformer or voltage transformer circuit failure can cause the protection to operate incorrectly, so that the circuit breaker trips.
3. There is no current and voltage fluctuation in the power grid, and the DC system insulation monitoring device action, DC grounding signal, may be two or more points of the DC circuit grounding.
4. When there is a fault in the power grid or operation, if the DC power supply such as silicon rectifier DC power supply sometimes voltage fluctuations, interference, pulses, etc. now make the transistor protection false action.
5. Human factors, such as wrong touch.
If the circuit breaker is found to be tripped, according to the above circumstances, timely judgment of what causes the false tripping, and then try to exclude the causes of false tripping, restore the operation of the circuit breaker, in order to ensure the normal operation of the distribution cabinet.
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