At a ( ) fault of the
system, the non-fault phase voltage will increase with the
zero-sequence impedance.
A: three-phase fault
B: double line-to-ground fault
C: line-to-line fault
D: single line-to-ground fault
system, the non-fault phase voltage will increase with the
zero-sequence impedance.
A: three-phase fault
B: double line-to-ground fault
C: line-to-line fault
D: single line-to-ground fault
举一反三
- 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
- The angle between the working face and the fault line is small, the exposed area of the fault zone is large, and the fault passing time is .
- 100%<br/>Protection for generator stator single phase earth fault() A: zero<br/>sequence voltage protection B: third<br/>harmonic voltage protection C: zreo<br/>sequence current
- When the working face passes through the fault, the angle between the working face and the fault line is large, the exposed area of the fault zone is small, and the time of passing through the fault is long.
- (19) What is the kind of fault that the fault growth index is used for?<br/>___ A: normal<br/>fault B: reverse fault C: strike-slip<br/>fault D: growth<br/>fault