然后在线路首端注入电流，通过探测器检验几个分支上是否有电流流过，检测到电流的即为故障点所在的分支。

After injecting current into the head of line, the detector can check whether these branches flow current, the fault branch is that the current has flowed.

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然后在线路首端注入电流，通过探测器检验几个分支上是否有电流流过，检测到电流的即为故障点所在的分支。

After injecting current into the head of line, the detector can check whether these branches flow current, the fault branch is that the current has flowed.

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