The justifying conditions can be used to justify the location of faults, including single phase earthing, two phases earthing and two phases shorting.
该判据可以对不对称的故障进行故障定位，这些故障包括单相接地故障、两相接地故障和两相短路故障。
Aim at an-arc suppression reactor earthing power system, we design a suit of microcomputer system for compensating single-phase earthing current and selecting line.
针对中性点经消弧线圈接地的小电流接地系统，设计了一套单相接地补偿及选线的微机保护装置。
Aim at an-arc suppression reactor earthing power system, a suit of microcomputer system for compensating single-phase earthing current and selecting line was designed.
针对中性点经消弧线圈接地的小电流接地系统，设计了一套单相接地补偿及选线的微机保护装置。
This Paper analyses the harm of single-phase earthing in electricity supply system of mine and introduces several type of common ways of leakage protection.
分析井下供电系统单相接地的危害，介绍几种常见的漏电保护方法。
The paper analyses the theory of some line-selecting earthing devices, they are unable to solve the problem of single-phase earthing line-selecting in petty current earthing system satisfactorily.
本文对几种常用接地选线装置的原理进行了分析，都存在不能园满解决小电流接地系统单相接地的选线问题。
Zero-sequence transient energy is calculated for low earthing resistance and single-phase transient energy for high earthing resistance.
并且根据接地电阻的大小选择不同的暂态能量算式，故可判断金属性接地故障和高接地电阻接地故障。
The first class cable – suitable for one single –phase earthing – block time does not exceed one minute each time. Max. time not exceed 8 hours , and not exceed 125 hours in all in one year.
第一类——用于单相接地故障时间每一次一般不大于1min，亦可用于最长不超过8小时，每年累计不超过125小时的系统。
The first class cable – suitable for one single –phase earthing – block time does not exceed one minute each time. Max. time not exceed 8 hours , and not exceed 125 hours in all in one year.
第一类——用于单相接地故障时间每一次一般不大于1min，亦可用于最长不超过8小时，每年累计不超过125小时的系统。
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