High-voltage vacuum circuit breaker electrical life breakthrough improvement

High-voltage vacuum circuit breaker electrical life refers to the equipment and the technical conditions specified in the type test in the actual conduct of the full capacity breaking times. Application of high voltage vacuum circuit breaker contacts can not repair and replacement, requiring high-voltage power transformers breakers have a high enough electrical life is necessary. Generation of vacuum interrupter with a longitudinal magnetic field electrode and copper-chromium contact materials. mcb circuit breaker magnetic field electrode reduces exponentially under short-circuit breaking current arc voltage (arc energy), and to the contact surface of the arc evenly distributed; copper-chromium contact materials lower unit arc energy caused by the amount of Circuit breaker . This combination of both, making high-voltage vacuum circuit breaker electrical life breakthrough improvement. At present, China high voltage vacuum circuit breaker and then breaking, closing and other aspects of performance is relatively high, and it is relatively stable.
Early voltage vacuum circuit breaker electrical life expectancy is only 30 times, the longest running for over 20 years in the power system has yet to find because of high voltage vacuum circuit breaker electrical short-circuit breaking current life issues and retired, have not been found because of short-circuit breaking current electrical short life led to the accident, which fully shows that these high-voltage vacuum circuit breaker can basically meet the power system short-circuit breaking current for electrical life requirements. Therefore, the high-voltage vacuum circuit breaker short circuit breaking current electrical life is not better.