A.1A,50Hz,300 B.1A,100Hz,-300 C.0.707A,100Hz,300 D.0.707A,50Hz,300
A.電壓保護(hù) B.輔助保護(hù) C.零序保護(hù) D.距離保護(hù)
A.0 B.0.1 C.0.2 D.05