采用低压屏蔽法对发电机定子绕组进行直流泄漏试验，发现泄漏电流异常增大。
The direct-current leakage test is implemented by using the microampere shielded in low-voltage, and the leakage current increasing of generator stator winding abnormally is detected.
直流高电压(或称直流泄漏电流)试验，是一种行之有效的电机技术诊断方法。
DC high voltage (or DC leakage current) test is an effective method of technical diagnosis of electric machine.
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