A star connected 6-pole, 50Hz squirrel cage induction motor can be modeled using the approximate per-phase equivalent circuit with the following parameters:

The motor is rated at 26 kW. At its rated conditions, the motor is energized from a 415 V (line to line) supply. The rotational losses are found to be 550 W and the rotor current (stator reffered) is found to be at 50 A.

(a) Calculate the total copper losses and the core losses in the motor at its rated conditions

Copper loss = (W)

Core loss = (W)

(b) Calculate slip of the motor at rated conditions.

Transcribed Image Text:

R=0.30, X₁ =1.30, R-2500, X-500. R₁=0.302, X'; -1.50 R=0.30, X₁ =1.30, R-2500, X-500. R₁=0.302, X'; -1.50

Answer rating: 100% (QA)

a Total copper and core loss Copper loss I 2 ... View the full answer