No-load test line-to-line voltage 400 v input power 1770 w

Question

The no-load and blocked-rotor tests on a three phase, wye-connected induction motor yield the following results:

• No-load test: line-to-line voltage 400 V, input power 1770 W, input current 18.5 A, and friction and wind age loss 600 W

• Blocked-rotor test: line-to-line voltage 45 V, input power 2700 W, and input current 63 A Determine the parameters of the equivalent circuit of Figure 13.2.5(a), assuming R₁ = R'₂ and X_l1 = X'l₂.