water -cooled generator stator electric winding have with the diversion of water pipes and water systems, and thus their way with the general testing of generators differentiated. This is because in their stator winding insulation plus DC test voltage, leakage current measurement, there are still another circuit formed by the cooling water to leak out of options. Therefore, the testing of cold water to the generator stator winding insulation leakage, we must exclude the impact of the water in order to obtain accurate measurements.
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