The significance of measuring the DC resistance is to investigate the winding insulation and current loop connection conditions, and can reflect the winding quality of the winding, the winding turn-to-turn short circuit, the winding strand break or the lead wire break, and the tap Faults such as poor switch and wire contact, in fact, it is also an effective means to judge whether the DC resistance of each phase winding is balanced and whether the voltage regulation switch is correct.
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