Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 47, Problem 2SQ
How does a solid-state device start the motor?
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A 460 V 25 HP 4 poles connected in Y wound rotor induction motor has the following parameters: R1 = 0.641 ohms, X1 = 1.106 ohms, R2 = 0.332 ohms, X2 = 0.464 ohms and Xm = 26.3 ohms. For this machine calculate the maximum torque, rotation and corresponding slip.
For the following circuit. What is Vr. Additionally, what is the threshold input voltage VL that will change the output of the comparator from hight ot low.
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