Which of the following is not the role of high-voltage circuit breaker ? ( )
A: Switch on and off various load circuits under normal conditions
B: Automatically and quickly switch off the fault current under fault conditions
C: Realize the function of automatic reclosing
D: Switching voltage level
A: Switch on and off various load circuits under normal conditions
B: Automatically and quickly switch off the fault current under fault conditions
C: Realize the function of automatic reclosing
D: Switching voltage level
举一反三
- What is the role of high voltage circuit breaker QF?
- When the secondary side of the electromagnetic current transformer is in normal operation, it is close to ( ) state. A: Overvoltage B: Open C: Short circuit D: Under voltage
- For a neutral-unearthing system, during a bolted single line-to-ground fault, the non-fault phase voltage and the fault phase voltage are ()respectively. A: phase voltage and zero B: phase voltage and line-to-line voltage C: line-to-line voltage and phase voltage D: line-to-line voltage and zero
- An open circuit pn junction under illumination generates an open circuit voltage Voc.
- The isolating switch model is GN2-10/1000, meaning ( ). A: Rated voltage 2KV, rated current 10A B: Rated voltage 2KV, rated current 1000A C: Rated voltage 10KV, rated current 1KA D: Rated voltage 10KV, rated current 10KA