Electric Motors

Hi...

I need to know about the efficiency of 3 phase electric motor where i have only input voltage,current,frequency & rpm.

What is the formula to find the efficiency?


asked 12/14/2016
Manick2
Manick

2 Answers

E(efficiency)
Po(power out)
Pi(power in)

E=Po/Pi
thus, if you have the rating of the power delivered you just divide it and get your efficiency 

OR can use the following 

E=(746*HP)/[(746*HP)+(watts lost)] Where 746 is a constant and HP=horsepower

just my two humble cents, hope this helps
Regards

answered 2 months ago Expeditions Conquistador 2
Expeditions Conquistador
i think by using the relation of the losses so we can find the losses and subtract the losses we get output .
i think it is correct .we can get an appropriate efficiency. if wrong forgive me sir .
and please tell me the solution sir.
thank you
answered 12/30/2016 Thulasi 2
Thulasi

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