Answer to Question #203132 in Electrical Engineering for Renoir

Question

A 10kW, 400 V, 4pole, delta connected SCIM gave the following test results,

N.L. test: 250W, 400V, 8A, B.R. Test : 1350W, 90V, 35A ,

The stator winding resistance/phase is 0.72 ohms/phase. Calculate rotational losses and the

equivalent circuit parameters of the motor.

Answer 1

$Reff = 1.2*r;$  Due to delta connected rotor. $Reff=1.2*0.6=0.72 \Omega$

$Pr=250−3∗ 3 64 ​ ∗(0.6∗1.2)=204W.$