Answered: A selector switch and two - wire pilot…

A selector switch and two - wire pilot device cannot be used to control a large motor directly but rather must be connected to a magnetic starter. Why this is true.?

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter4: Symbols

Section: Chapter Questions

Problem 13SQ

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Concept explainers

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.

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A selector switch and two - wire pilot device cannot be used to control a large motor directly but rather must be connected to a magnetic starter. Why this is true.?

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