"smitha4u" wrote in message
oups.com...
Hi Guys

Can any one suggest what are the various methods of performing bench
test for a 20 Kw(25HP) DC electrical variable speed motor.

Thank you
Regards
smitha


Not sure what you mean by bench testing. Do you want to determine the
characteristics or just see if it runs?

Don explained some of the methods for determining motor constants.
Depending on your use, and since it's a big motor, you may also want
to measure friction and the armature inertia

Other parameters would be armature resistance and inductance to
complete the full set of parameters.

Then you can model the DC motor...