Electric Motor Control

10th Edition
Publisher: CENGAGE L
ISBN: 9781133702818



Electric Motor Control

10th Edition
Publisher: CENGAGE L
ISBN: 9781133702818
Chapter 21, Problem 3SQ
Textbook Problem

If a reversing control circuit contains push-button interlocking, what would happen if both the forward and reverse buttons were pushed at the same time?

To determine

Explain the consequence of pushing both forward and reverse buttons at the same time in push-button interlocking.

Explanation of Solution

The reversal of direction of the motor is accomplished by the reversing starters with the help of two contactors; one is used for the forward direction and another is used for the reverse direction.

A push-button interlocking is an electrical method of avoiding simultaneous energization of coil of two contactors. From Figure 21-6 in the textbook, when both forward and reverse push buttons are pressed, two contactors will remain in an open condition...

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