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A 17 kW, 480 V, 60 Hz, 2 poles, 3510 rpm, Y-connected squirrel cage induction motor has following parameters referred to the stator: R, = 0.2 N, R, = 0.3 N, X, = X, = 2 N. Motor speed is controlled by stator frequency control. The torque equation of the fan is given by TL = 0.0036 w?. 1- Calculate: • The current at 60 Hz. AZ The torque at 60 Hz. T = N.m 2- If the frequency is decreased to 30 Hz, calculate: The motor speed N RPM The starting current AZ

A 17 kW, 480 V, 60 Hz, 2 poles, 3510 rpm, Y-connected squirrel cage induction motor has following parameters referred to the stator: R, = 0.2 N, R, = 0.3 N, X, = X, = 2 N. Motor speed is controlled by stator frequency control. The torque equation of the fan is given by TL = 0.0036 w?. 1- Calculate: • The current at 60 Hz. AZ The torque at 60 Hz. T = N.m 2- If the frequency is decreased to 30 Hz, calculate: The motor speed N RPM The starting current AZ

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A 17 kW, 480 V, 60 Hz, 2 poles, 3510 rpm, Y-connected squirrel cage induction motor has following 0.2 N, R, = 0.3 N, X, = X, = 2 N. Motor speed is controlled parameters referred to the stator: R. by stator frequency control. The torque equation of the fan is given by TL = 0.0036 w². 1- Calculate: The current at 60 Hz. I2 A Z The torque at 60 Hz. T = N.m 2- If the frequency is decreased to 30 Hz, calculate: The motor speed N = RPM The starting current I2 = AZ
Transcribed Image Text:A 17 kW, 480 V, 60 Hz, 2 poles, 3510 rpm, Y-connected squirrel cage induction motor has following 0.2 N, R, = 0.3 N, X, = X, = 2 N. Motor speed is controlled parameters referred to the stator: R. by stator frequency control. The torque equation of the fan is given by TL = 0.0036 w². 1- Calculate: The current at 60 Hz. I2 A Z The torque at 60 Hz. T = N.m 2- If the frequency is decreased to 30 Hz, calculate: The motor speed N = RPM The starting current I2 = AZ
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