The characteristics of ground-fault of ungrounded system are given and the faults symptom is analyzed and judged.
阐述了小电流接地系统接地的特点并对其故障现象进行分析、判断。
Compared with neutral ungrounded power system, ferroresonance overvoltage occurred in neutral grounded power system has more new features, and the research about it is much.
相对于中性点非直接接地系统而言，发生在中性点直接接地系统中的铁磁谐振过电压有着许多新的特点，而且对它的研究相对较少。
In ungrounded distribution system the single-phase-grounding and the ferro-resonance caused by the PT (Potential Transformer) are of the frequent accidents.
在中性点非直接接地电网中，单相接地及由电压互感器(PT)引起的谐振过电压均是多发性的事故。
In the neutral ungrounded power system, ferroresonance over-voltage due to electromagnetic transformer takes place frequently.
在中性点不接地电网中，频繁发生由电磁式电压互感器引起的铁磁谐振现象。
In the neutral ungrounded power system, ferroresonance over-voltage due to electromagnetic transformer takes place frequently.
在中性点不接地电网中，频繁发生由电磁式电压互感器引起的铁磁谐振现象。
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