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,在套一串非晶材料磁环能够显著增加路电感,对减小真空开重燃过电压的陡度是有效的。

Multiple reignition makes the frequency and amplitude of overvoltage increase and might do harm to transformer coils by cumulative effects for its surge steepness.

多次重燃使得过电压频率和幅值，会对变压器等绕组型设备绝缘造成危害。