A 15 kW, 400 V, 3 phase, 50 Hz, 6 pole induction motor has a diameter of 0.3 m and the length of core 0.12 m. The number of stator slots is 72 with 20 conductors per slot. The stator is delta connected. Calculate the value of magnetizing current per phase if the length of airgap is 0.55 m. The gap contraction factor is 1.2. Assume the mmf required for the iron parts to be 35 percent of the airgap mmf. Coil span= 11 slots
A 15 kW, 400 V, 3 phase, 50 Hz, 6 pole induction motor has a diameter of 0.3 m and the length of core 0.12 m. The number of stator slots is 72 with 20 conductors per slot. The stator is delta connected. Calculate the value of magnetizing current per phase if the length of airgap is 0.55 m. The gap contraction factor is 1.2. Assume the mmf required for the iron parts to be 35 percent of the airgap mmf. Coil span= 11 slots
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter32: Three-phase Motors
Section: Chapter Questions
Problem 6RQ: Name three factors that determine the torque produced by an induction motor.
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A 15 kW, 400 V, 3 phase, 50 Hz, 6 pole induction motor has a diameter of 0.3 m and the length of core 0.12 m. The number of stator slots is 72 with 20 conductors per slot. The stator is delta connected. Calculate the value of magnetizing current per phase if the length of airgap is 0.55 m. The gap contraction factor is 1.2. Assume the mmf required for the iron parts to be 35 percent of the airgap mmf. Coil span= 11 slots
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