Understanding Motor Controls
Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Chapter 37, Problem 1RQ
To determine

The full load running current of the motor.

Expert Solution & Answer
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Explanation of Solution

Given information:

Horsepower is 20 HP.

Armature voltage rating is 500 V

Solution:

Refer Table 430.247 “Full Load Current in Amperes, Direct Current Motors” from page 368 and obtain the full load current in amperes corresponding to the horsepower of 20 HP and the armature voltage rating of 500V as follows:

  Full load current=34.0 A

Thus, the full load running current of the motor is 34 A.

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