【Electrical Version】Daily Question 20180502
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Fill in the blanks: When a circuit breaker and a disconnector are used together for the power supply inlet, during the closing process, ( ) should be closed first, followed by ( ); during the opening process, ( ) should be disconnected first, followed by ( ).
Isolating switch, circuit breaker; circuit breaker, isolating switch
Isolator Circuit breaker Circuit breaker Isolator
Isolating switch, circuit breaker; circuit breaker, isolating switch
Isolator, circuit breaker, circuit breaker, isolator
Isolating switch, circuit breaker; circuit breaker, isolating switch
Isolator, circuit breaker, circuit breaker, isolator
Isolating switch, circuit breaker Circuit breaker Isolating switch
Isolating switch, circuit breaker Circuit breaker, isolating switch
During the closing process, the isolating switch should be closed first, followed by the circuit breaker； During the disconnection process, the circuit breaker should be disconnected first, followed by the isolator.
Isolating switch, circuit breaker in open position, circuit breaker, isolating switch