Electric Motor Control

10th Edition
Publisher: CENGAGE L
ISBN: 9781133702818



Electric Motor Control

10th Edition
Publisher: CENGAGE L
ISBN: 9781133702818
Chapter 48, Problem 15SQ
Textbook Problem

If the supply lines are in the proper phase sequence (L1, L2, and L3) and are connected to their proper terminals on the motor (T1, T2, and T3), will all the motors rotate in the same direction? Why?

To determine

Explain whether all the motors rotate in the same direction when it is connected to the appropriate phase sequences (L1, L2, and L3) to their appropriate terminals on the motor (T1, T2, and T3).

Explanation of Solution


The motors may be different in the name plate details that are designed by the different manufacturers. All the manufacturers may not follow the same standards (mainly phase sequence and color code) in the designing process of the motors.

If all the motors belong to a single manufacturer and they are connected in proper phase sequence (maintain uniform internal connections), then all the motors will rotate in the same direction...

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