A.RN1-10 B.RN2-35 C.XRNP-12 D.RW11-10
A.3~5 B.5~7 C.5~10 D.10~15
A.高壓負(fù)荷開關(guān) B.低壓負(fù)荷開關(guān) C.接地開關(guān)