A.中性點(diǎn)零序過流 B.110kV過流 C.27.5kV過流 D.過負(fù)荷
A.2%~4% B.1%~5% C.10%~13% D.5%~8%
A.電壓升高 B.電壓降低 C.熔斷器熔斷 D.電壓不變