A 3-phase, 6-pole, 50-Hz induction motor has a peak torque of 6Nm and a starting torque of 3 Nm when operating at full voltage. Maximum torque occurs at a slip of 25%. When started at 1/3 of normal voltage the current is 2A. (a) What is the mechanical power, at peak torque when operating at normal voltage? (b) What maximum torque would the machine produce at 1/3 of normal voltage? (c) What starting current would the machine take when supplied with normal voltage?
A 3-phase, 6-pole, 50-Hz induction motor has a peak torque of 6Nm and a starting torque of 3 Nm when operating at full voltage. Maximum torque occurs at a slip of 25%. When started at 1/3 of normal voltage the current is 2A. (a) What is the mechanical power, at peak torque when operating at normal voltage? (b) What maximum torque would the machine produce at 1/3 of normal voltage? (c) What starting current would the machine take when supplied with normal voltage?
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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