DC Motors
DC Motors
(OP)
What is the best way to locate the neutral axis of a DC motor in the workshop where motor is usually tested on no load.
regards
regards
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RE: DC Motors
While you're at it, after you have a null point, rotate the armature. A fluctuating voltage on the brushes will indicate shorted or open windings in the armature.
respectfully
RE: DC Motors
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RE: DC Motors
respectfully
RE: DC Motors
Thanks
RE: DC Motors
Any voltage close to the rated DC voltage.
Is this your practice also, electricpete?
respectfully
RE: DC Motors
Field voltage is usually in the 100 - 300 V range and insulation is good for at least a few thousand volts. Mains is either 50 or 60 Hz.
Since the field winding is highly inductive, you can apply any normal 50 or 60 Hz voltage to any normal field winding without getting any overcurrent, and the insulation can take any normal voltage.
The normal wall outlet voltage is the easiest way of getting an AC voltage. But remember that you are dealing with lethal voltages. All safety precautions apply.
Gunnar Englund
www.gke.org
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