A 12-pole 3-phase 50 hz delta-connected induction motor, Ask an Expert

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A 12-pole, 3-phase, 50 Hz, delta-connected induction motor draws 280 A and 110 kW under blocked-rotor test at rated voltage and frequency. Find the starting torque when switched on direct to the supply. Assume the stator and rotor copper losses to be equal under the blocked-rotor test. What would be the starting torque if the motor is started by connecting the phase windings in star.

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Electrical & Electronics, Engineering

Category:- Electrical & Electronics
Reference No.:- M92020190

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