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Bob Engelhardt

wrote:
...
For a closer figure you need to guesstimate the motor
maximum current. ...
If you now increase the stalled current ... until the measured
R increase by 30% the winding temperature will be about 100 deg
C ...

Jim - thanks for the great info. Question about the max current
process: if the motor is stalled during this test, you'd only be
heating one winding - is that going to give a good current value that
can be used when all windings are in use (running)? In other words, the
current required to give a certain temp depends upon the cooling and the
cooling will be different when running.

Thanks,
Bob
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Nota for President