Electric Motor Control

10th Edition
Publisher: CENGAGE L
ISBN: 9781133702818



Electric Motor Control

10th Edition
Publisher: CENGAGE L
ISBN: 9781133702818
Chapter 41, Problem 2SQ
Textbook Problem

If the motor fails to achieve synchronous operation, what action is necessary?

To determine

Explain the necessary action required when the motor fails to achieve the synchronous operation.

Explanation of Solution

In the synchronization process of a synchronous motor, the timing relay contact (contact TR) is closed to acceleration process of the motor rotor. After closing the timing relay contact (contact TR), the time setting of relay is adjustable in running conditions to accelerate the rotor until it locks in step with stator field.

Every attempt of the synchronizing process of the motor may not be successful. If the synchronizing installation process is not success, press the stop button and repeat the starting cycle...

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