Electric Motor Control

10th Edition
Publisher: CENGAGE L
ISBN: 9781133702818



Electric Motor Control

10th Edition
Publisher: CENGAGE L
ISBN: 9781133702818
Chapter 40, Problem 2SQ
Textbook Problem

What is the purpose of the interlock (M) in the DC control circuit?

To determine

Explain the purpose of interlock (M) in the DC control circuit.

Explanation of Solution

Interlock M contacts prevent the motor’s DC field from excitation before the motor is started; they will get close after AC control is energized. When the stop button is pressed in the AC side, it...

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