- Nov 24, 2017 -
Electric Switch Lockouts is the circuit breaker, disconnecting switch, grounding switch and other auxiliary equipment access to the relevant electrical equipment operating power circuit consisting of a closed loop, widely used in electric operation equipment. The advantage is that the operation does not need to be supplemented by other operations, locking reliable. But need to access a large number of secondary cables, wiring complex, operation and maintenance difficulties, there are more auxiliary contacts in series. Auxiliary contact equipment work unreliable, will directly affect the reliability of electrical interlocking. Generally, the electrical blocking circuit only prevents the misoperation of the circuit breaker, the disconnecting switch and the grounding switch, and can not help the complete "five defense" function independently of the charging interval and the grounding wire connection (removal).