As we all know, because of the vacuum circuit breaker closure will cause the closure of over-voltage, especially in breaking negative emotional small cut such as when the motor, under normal circumstances Harbin breaker factory outlets, to limit over-voltage and over-voltage to the vacuum circuit breaker with absorbing devices such as SicRC road, ZnO arrester, which makes large-scale structure and the complexity of the circuit breaker breaker Harbin factory outlets, and some limit the over-voltage is not ideal. Fourth, the main advantage EA9R leakage protection circuit breakers, pre-assembled leakage protection circuit breaker (earth leakage circuit breaker + annex), is the maximum to avoid the risk of misuse assembled drain attachment. It provides both overload, short circuit, leakage protection. When the action occurs leakage protection device, positive means of a red mechanical fault indication can distinguish leakage and other protection. Circuit breakers "Resist" processing failure occurred "Resist" The situation in Harbin breaker factory outlets, basically closing operation and reclosing process. Such failure harmfulness, for example in case of an accident requires an emergency backup power input, if the standby power switch on the circuit breaker to refuse, it will expand the accident. Analyzing breaker "Resist" the causes and treatment generally three steps. 1) Check the refusal before closing if caused by improper operation (such as control switches let go too fast, etc.), and then combined with the control switch once again. 2) If the closing is unsuccessful, check all parts of the electrical circuit breaker factory direct Harbin situation to determine whether faulty electrical circuit. Check the project is: switch on the control power supply is normal; closing closing loop control circuit fuse and the fuse is good; closing contactor is normal; the control switch is set to "closing time" position, look at closing core operation is normal. 3) If the normal electrical circuit breaker is still not closing, then a mechanical fault, the circuit breaker should be discontinued, the report scheduling maintenance treatment. After the above preliminary examination, it can determine the electrical connection, or mechanical failure. Breaker factory outlets, Huayi Electric Power (online consultation), Harbin, Xian Huayi breaker provided by the power plant. Xian Huayi Electric Power Equipment Factory (www.xahy.com) is a leader in Xi'an high-voltage circuit breakers, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Huayi Electric Power leadership with the staff warmly welcome all inquiries negotiations to create Huayi electricity better future.