Motor lost one feeding phase

[wiks]

What would be the current of the 3-ph AC motor, if it lost one feeding phase?
The load, efficienty and power factor (theoreticly would say stay) constant.

 

[Skogsgurra]

Power factor, efficiency and a few other things do not stay constant. So your question cannot be answered, really.

But, of course, if it is some kind of example or test used in school, you can always calculate what current the three impedances pass. Wye or delta? Hint: does it really matter?

Gunnar Englund

http://www.gke.org

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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[Marke]

The current and performance is going to be very load dependant.
If the load is high, the motor may begin to stall with one phase missing.

Best regards,

Mark Empson

http://www.lmphotonics.com