对我公司高压电机的低电压保护现状进行分析，指出存在的问题，并提出改进意见。
The article gives the analysis about the present low-voltage protection of high-voltage motor, sets forth the existing problems and brings out the proposal for improvement.
接地故障的低电压系统的保护是因为存在和电弧接地故障的低级别的性质相当严重的问题。
Ground-fault protection of low-voltage systems is a considerable problem because of the presence and nature of low-level arcing ground faults.
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