6600 Motor on 3300 Volt Supply

just a try.... with star-delta starter we reduce voltage to 57.8% inside windings hence limiting huge inrush current.

please note in that it lasts for less duration only and for that winding is not affected, so i hope less voltage wont create any problem to winding physically but output power is reduced.

so due to mechanical load the motor tries to draw more current for the required power with less voltage available crossing full load current.

the motor designed for full load current with that rated winding will affect.

Most HV motors I've come across are star connected. So assuming you could connect the motor in delta you may get away with 3300V. (I doubt it though, usually all 6 leads aren't brought out to the terminal box). For delta the voltage required would be 3810V

I think it's a mad idea. If you actually have the motor and supply (which I doubt very much), it's a lot of capital to put at risk!

excellent answer

Agreed!

Lots of risks involved. Hobbyists would try that at low voltage but not on an industrial application.

THANKS TO ALL FOR REPLY, This question was raised because one of our client had purchased 3.3 kv motor for 6.6 kv supply. aditya

3.3kV motor for 6.6kV supply voltage ? this is exactly opposite to what you had mentioned in your opening post. Don't do it please....you will burn the motor forthwith and possibly damage other equipment if protection doesn't operate.

I agree, this is the opposite of what you said in the beginning.

If this is the true nature, then it is a completely different problem. At 2X the rated voltage, the motor will saturate and produce excessive heat while also creating very dangerous and destructive levels of initial torque. As QSK said, don't do it!

DON'T DO IT!

Your client may be a mad guy; don't understand the technical aspect of electric motors.

Then the Client has a commercial and timing problem to solve. It isn't the sub-supplier's problem; stay out of it.