Answered: 6.32- The following test data were…

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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6.32- The following test data were taken on a three-phase, four-pole, 100 hp, 480 V, 60 Hz, design A
wye-connected induction motor with a rated current of 116.3 A:

Dc test
Vdc = 23.26 V Idc = 116.3 A

No-load test
Vnl = 480 V Ia = 24.5 A
f = 60 Hz Ib = 24.1A
Pnl = 4900 W Ic = 24.7 A

Blocked-rotor test

Vbr = 42.2 V Ia = 116.4A
ftest = 15 Hz Ib = 116.4 A
Pbr = 6100 W Ic = 116.2 A

Determine the following:
(a) The resistances R1 and R2 of the motor. Use a factor of 1.2 in computing the effective (ac)
armature resistance per phase.

(b) The reactances X1, X2, and Xm of the motor.

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