A.對(duì)地絕緣 B.相間絕緣 C.對(duì)地及相間絕緣 D.對(duì)地及對(duì)屏蔽層絕緣
A.115V B.117V C.120V D.110V
A.I2dmin/Inz≥1.2 B.I2dmin/Inz≥1.5 C.I2dmin/Inz≥4 D.I2dmin/Inz≥4~7