A.1.8~2 B.2~4 C.3~6 D.6~20
A.當(dāng)斷路器動作時間小于0.02s時取1.7~2; B.當(dāng)斷路器動作時間小于0.02s時取1.2~1.35; C.當(dāng)斷路器動作時間大于0.02s時取1.5~2; D.當(dāng)斷路器動作時間大于0.02s時取2~3。
A.3 B.4.5 C.5 D.6.5