Damage brought by canceling the under-voltage (no-voltage) release of low-voltage breaker and its solutions

This paper analyzes the reason why some customers of power distribution network cancel the under-voltage (no-voltage) release of low-voltage breaker. Also, it discusses the damage brought by the power supply recovering and the under-voltage operation of power network, under the circumstance of canceling the under-voltage (no-voltage) release of low-voltage circuit breaker. Power network instantly fluctuating, flickering, supply interrupting may cause low-voltage breaker under-voltage (no-voltage) releasing and leads to customers’ electricity failure. It is heavy human forces and much time needed, that the power supply department manually switches the breakers on when power supply recovering. Aiming at above two situations, the paper puts forward two solutions that low-voltage breaker should use delay under-voltage releaser and reclosing controller of no-voltage release in order that the under-voltage release can function much better.