A.繼電保護(hù)動(dòng)作時(shí)間+斷路器全開(kāi)斷時(shí)間B.斷路器固有分閘時(shí)間+燃弧時(shí)間C.繼電保護(hù)動(dòng)作時(shí)間+燃弧時(shí)間D.繼電保護(hù)動(dòng)作時(shí)間+斷路器固有分閘時(shí)間
A.繼電保護(hù)動(dòng)作時(shí)間+斷路器全開(kāi)斷時(shí)間B.繼電保護(hù)動(dòng)作時(shí)間+斷路器固有分閘時(shí)間+燃弧時(shí)間C.繼電保護(hù)動(dòng)作時(shí)間+燃弧時(shí)間D.繼電保護(hù)動(dòng)作時(shí)間+斷路器固有分閘時(shí)間
A.一階B.二階C.三階D.四階