3.4 接地电压互感器 (earthed voltage transformer) 一次绕组的一端准备直接接地的单相电压互感器,或一次绕组的星形连接点准备直接接 地的三相电压互感器。
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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 ungrounded distribution system the single-phase-grounding and the ferro-resonance caused by the PT (Potential Transformer) are of the frequent accidents.
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