脉冲火花机的校准是把数位电压表直接接在测试电极和地之间。
The impulse test equipment shall be calibrated by means of a peak detecting electronic voltmeter connected directly between the electrode head and ground.
当泄漏电流达到这水平时﹐火花机将再也不能有效输出电流来产生高的测试电压。
Whenthe leakage current reaches this level, there is no more availablesupply current to generate a greater test voltage.
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