In a10kV distribution system,when shunt ca-pacitors are switched off by vacuum circuit breakers,restrike overvoltage often occurs.

电力系统中使用真空断路器切除无功补偿用并联电容器时,容易产生电压,严影响并联电容安全运行。

Die should contain a minimum of one idle station to accommodate future design considerations. i.e. restrike cam pierce etc.

具应至少包含一个空站以适应未来变更，回整，凸轮，冲孔等。

It is showed that magnetic rings of amorphous material on a conductor can notably increase its inductance and make effective suppression on the steepness of the vacuum restriking overvoltage.

试验显示,在导线上套上一串非晶材料磁环能够显著增加线路电感,对减小真空开关电压陡度是有效。