A 430-V, 60-Hz, 4-pole, Y-connected induction motor is rated at 77-kW. The equivalent circuit parameters are given in the table below. R1(0) R2(0) Xm (2) X2(0) PrRw (W) Pstray(W) Pcore (W) 0.06 0.115 7.7 0.21 0.13 970 145 900 For a slip of 1.5%, answer the following: a) Find the induced torque of the motor? b) Find the starting torque of the motor? c) Find the motor speed at the pull-out torque? Do not use Thevenin approximation
A 430-V, 60-Hz, 4-pole, Y-connected induction motor is rated at 77-kW. The equivalent circuit parameters are given in the table below. R1(0) R2(0) Xm (2) X2(0) PrRw (W) Pstray(W) Pcore (W) 0.06 0.115 7.7 0.21 0.13 970 145 900 For a slip of 1.5%, answer the following: a) Find the induced torque of the motor? b) Find the starting torque of the motor? c) Find the motor speed at the pull-out torque? Do not use Thevenin approximation
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Transcribed Image Text:A 430-V, 60-Hz, 4-pole, Y-connected induction motor is rated at 77-kW. The equivalent circuit parameters
are given in the table below.
R1(0)
R2(0)
Xm(2)
X1(0)
X2(0)
PF&w (W) Pstray(W) Pcore (W)
0.06
0.115
7.7
0.21
0.13
970
145
900
For a slip of 1.5%, answer the following:
a)
Find the induced torque of the motor?
b)
Find the starting torque of the motor?
c)
Find the motor speed at the pull-out torque?
Do not use Thevenin approximation
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