capacity of 6000kW or more)
1) the difference between the leakage current of each phase should not be greater than the smallest value of 50%, when the maximum leakage current in the 20uAA or less, the difference between the phases of the value should not be significantly different from the factory test value comparison.
2)Leakage current should not increase with time.
When one of the above provisions is not met, the cause should be identified and eliminated.
3)Leakage current increases disproportionately and significantly with voltage and should be analyzed promptly.
(2) AC motor
1000V or more and 1OOOkW or more neutral connection has been led out of the motor. In the specified test voltage, the value of the leakage current of each phase should not be greater than 100% of the smallest value; when the maximum leakage current below 20uA, there should be no significant difference between the phases. Other Xiangtai Electric think should refer to the synchronous generator and the terms of the regulator.