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How to test short in alternator rotor winding inside the slots?
- Thread starter SA07
- Start date
To begin with, you would have to measure resistance of the winding and compare it with the values from generator test sheet. As it is relatively small, you could determine the voltage drop with DC current of for example 100 A if it is less than the nominal values .
LionelHutz
Electrical
You can apply AC voltage to the rotor and then measure the voltage on each coil/pole and compare. I don't know how much difference indicates a bad pole, but I know this is a test that sites with a lot of synchronous motors use to determine when a motor has rotor issues.
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