Industrial Motor Control
7th Edition
ISBN: 9781133691808
Author: Stephen Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 52, Problem 1RQ
In a relay circuit, what function is served by the holding contacts?
Expert Solution & Answer
To determine
The function of the holding contacts in the relay circuit.
Explanation of Solution
The relay swtich are the mechanical devices that are used in conjunction with the electrical protective devices to protect the devices from any kind of fault.
The holding contact in the relay circuit are used to provide the current path to the relay coil as the start button is released.
The holding contact is in parallel with the start and in the same way the stop wire is in series to break the relay circuit and then stop the motor.
Thus, the holding contact are used to provide the closed path.
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Chapter 52 Solutions
Industrial Motor Control
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