RCS-901A在三相重合闸或手合时,零序电流大于加速定值时经___ms延时三相跳闸RCS-901A在三相重合闸或手合时,零序电流大于加速定值时经___ms延时三相跳闸选项1:50选项2:60选项3:100选项4:80选项5:答案:3