On 10/03/2018 11:29 AM, Roland Jollivet wrote:
It's a 3-phase PM motor, no commutator. So does the KV constant method
still apply? Maybe load it with a few hundred ohms to damp it a bit?
OHH! That is a bit different, and of course you have to use
the AC scale of the meter, but yes, KV definitely still
applies. Just measure the voltage on any 2 winding
terminals. By comparing frequency against the RPM, you can
figure out how many poles the motor has. No need for a
load, the winding resistance of such a motor is going to be
really low, so the resistor will have no effect.
Jon
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