The DS0 was removed from service by a faultcondition.
一旦出现故障，就会使DS 0退出服务。
2
A possible faultcondition could be a community that becomes too large to fulfill its original purpose.
一种可能的故障情况是，社区太大，以至于无法实现其原来的目标。
3
But under faultcondition, the system current is greater than the current of equivalent AC current source and the limiting resistance take effect immediately.