delta connected squirrel cage induction motor

Discussion in 'Homework Help' started by Nikoz121, Apr 23, 2015.

  1. Nikoz121

    Thread Starter New Member

    Mar 17, 2015
    The following set of results was obtained for a delta connected squirrel cage induction motor with a line to line voltage of 400V. Calculate the efficiency of this motor, plot a graph of the results and explain your findings.


    Hello, I've got this problem and I've been able to work out the output power using the formula P= (2pi * Torque * speed) / 60 and I also think I have work out the input power but I'm not sure if I'm doing right since I am getting a very very low efficiency for each reading. I have used the formula P = sqrt(3) * I_L * V_L * PF.

    Is the efficiency suppose to be that low? Thank your very much for your help
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    Were the measured power values taken on a per-phase basis?