互感现象是指二相邻线圈中，一个线圈的电流随时间变化时导致穿过另一线圈的磁通量发生变化，而在该线圈中出现感应电动势的现象。互感现象产生的感生电动势称为互感电动势。
故可得出结论：在中性点绝缘系统中，因电磁式电压互感器饱和引起的过电压现象属于工频位移过电压。
Therefore, the over-voltage caused by the electromagnetic voltage transformer saturation in the system with insulated neutral belongs to shifting over-voltage.
从改善电压互感器伏安特性着手，使电压互感器在运行中不出现饱和现象。
Work begins with the improvement of volt-ampere characteristics of voltage instrument transformer, to ensure that saturation phenomenon does not appear.
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.
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