First the zero sequence transient current signal sampled is enhanced, and then the signal enhanced is decomposed by using wavelet packet analysis to realize faulty line detection.

首先对采样的零序暂态电流信号做增强处理，然后利用小波包分析方法进行故障选线。

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Type of fault, phase sequence, value of faulty current and breaking action time will be indicated on the intelligent controller promptly if breaker turns off because of faults.

断路器遇故障分断后，智能控制器能显示出故障类别、故障相序及故障电流值、分断动作时间值。

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By analyzing the zero-sequence full current for single-phase grounding fault in isolated neutral distribution network, a new approach to determine the faulty transmission line is obtained.

通过对中性点不接地配电网单相接地故障时零序全电流的分析，得出了利用零序全电流的大小和方向进行故障选线的新方法。

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Whereas most people have a sequence called BRCA1, which helps to suppress tumours, some people are born with a faulty version of it, so tumours go unchecked.

BBC: Letter from America: Buy and cell