A.對地絕緣 B.相間絕緣 C.對地及相間絕緣 D.對地及對屏蔽層絕緣
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