A.短路保護(hù) B.過載保護(hù) C.逆功保護(hù) D.逆序保護(hù)
A.1~2/0.6~0.8s B.3~4/0.4~0.6s C.3~5/0.2~0.6s D.5~7/0.1~0.2s
A.1~2 B.3~5 C.4~7 D.5~10