Electric motor efficiency calculation

Discussion in 'Homework Help' started by Nevalite, Nov 5, 2012.

  1. Nevalite

    Thread Starter Member

    Feb 20, 2012
    45
    0
    Hello everyone,

    I am trying to calculate the electric efficiency of some 3 phase electric motors but I am a little confused about the power factor.

    efficiency=work out/work in

    work out=rated W of my motor (hp*745.7)

    work in= V*A*PF*√3

    Is the work in correct?

    Thanks
     
  2. mlog

    Member

    Feb 11, 2012
    276
    36
    Looks right if V is the line voltage and the load is balanced.
     
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