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A three-phase motor rated for 60 hp, 2200 V, six-pole, 60 Hz squirrel cage induction motor gave the following results under testing. No-load test: f= 60HZ, Line voltage = 2200 V, Line current = 4.5 A, Power = 1600 W Blocked Rotor test: f = 25 HZ, Line voltage = 270 V, Line current = 25 A, Power = 9000 W DC resistance/phase = R1 = 2.8 2 a. Draw the equivalent circuit for the No-Load test and determine corresponding parameters. b. Determine the no-load rotational loss. c. Draw the equivalent circuit for the blocked rotor test and determine the corresponding parameters (assume X1 = X2).

A three-phase motor rated for 60 hp, 2200 V, six-pole, 60 Hz squirrel cage induction motor gave the following results under testing. No-load test: f= 60HZ, Line voltage = 2200 V, Line current = 4.5 A, Power = 1600 W Blocked Rotor test: f = 25 HZ, Line voltage = 270 V, Line current = 25 A, Power = 9000 W DC resistance/phase = R1 = 2.8 2 a. Draw the equivalent circuit for the No-Load test and determine corresponding parameters. b. Determine the no-load rotational loss. c. Draw the equivalent circuit for the blocked rotor test and determine the corresponding parameters (assume X1 = X2).

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
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A three-phase motor rated for 60 hp, 2200 V, six-pole, 60 Hz squirrel cage induction motor gave the following results under testing. No-load test: f= 60HZ, Line voltage = 2200 V, Line current = 4.5 A, Power = 1600 W Blocked Rotor test: f = 25 HZ, Line voltage = 270 V, Line current = 25 A, Power = 9000 W DC resistance/phase = R1 = 2.8 2 a. Draw the equivalent circuit for the No-Load test and determine corresponding parameters. b. Determine the no-load rotational loss. c. Draw the equivalent circuit for the blocked rotor test and determine the corresponding parameters (assume X1 = X2). d. Draw the final equivalent circuit of the induction motor showing all parameter values.
Transcribed Image Text:A three-phase motor rated for 60 hp, 2200 V, six-pole, 60 Hz squirrel cage induction motor gave the following results under testing. No-load test: f= 60HZ, Line voltage = 2200 V, Line current = 4.5 A, Power = 1600 W Blocked Rotor test: f = 25 HZ, Line voltage = 270 V, Line current = 25 A, Power = 9000 W DC resistance/phase = R1 = 2.8 2 a. Draw the equivalent circuit for the No-Load test and determine corresponding parameters. b. Determine the no-load rotational loss. c. Draw the equivalent circuit for the blocked rotor test and determine the corresponding parameters (assume X1 = X2). d. Draw the final equivalent circuit of the induction motor showing all parameter values.
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