The healthy line is unloaded for zero-sequence component when a single-phase fault occurs in a non-solid earthed network.

小电流接地系统发生单相接地故障时，对零序分量而言，非故障线路相当于空载。

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The lab experiments showed that under the single phase fault status, the system could be accurate and reliable to detect the fault line and to drive the trip.

经实验室试验证明该系统在单相故障状态下能准确可靠地检测出故障线路并驱动跳闸。

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The lab experiments showed that under the single phase fault status, the system could be accurate and reliable to detect the fault line and to drive the trip.

经实验室试验证明该系统在单相故障状态下能准确可靠地检测出故障线路并驱动跳闸。

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