A.短路保護 B.過載保護 C.負壓保護 D.逆功保護
A.5%~10%/1~3s B.10%~15%/3~5s C.8%~15%/3~10s D.10%~20%/5~10s
A.40%~70% B.35%~70% C.30%~50% D.70%~90%