INDUSTRIAL MOTOR CONTROL
INDUSTRIAL MOTOR CONTROL
7th Edition
ISBN: 9780357670590
Author: Herman
Publisher: CENGAGE L
bartleby

Concept explainers

Question
Book Icon
Chapter 29, Problem 1RQ
To determine

The way in which the direction of the rotation of the three phase motor can be changed.

Expert Solution & Answer
Check Mark

Explanation of Solution

The direction of the rotation of three phase motor is changed by changing the leads connection. Consider the Figure 29-1 of the text book as it has T leads, when the leads 1 and 3 are interchanged then the motor starts to rotate in the opposite direction.

The change in terminals changes the flow of current and it changes the direction of the rotation of the field thus, it changes the direction of rotation of the motor.

The rotation of the motor is also changed by the help of the reverse starter as shown in Figure 29-2 in the text book.

Thus, the direction of the rotation of the three phase is obtained by the change inn terminals.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Name three factors that determine the amount of voltage induced in the rotor of a wound-rotor motor.
Problem 5 1. Where and why is a centrifugal switch used in a split-phase motor? 2. Why and where is a capacitor used in the single-phase AC motor? 3. What type of motor would you select to perform each of the following jobs? (a) Electric drill: (b) Refrigerator: (c) Hair driers and desk fans: (d) Air Conditioner Fan: (e) XY plotters and printers: (f) Electric clock:
Knowledge Booster
Background pattern image
Mechanical Engineering
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Text book image
Understanding Motor Controls
Mechanical Engineering
ISBN:9781337798686
Author:Stephen L. Herman
Publisher:Delmar Cengage Learning
Text book image
Electrical Transformers and Rotating Machines
Mechanical Engineering
ISBN:9781305494817
Author:Stephen L. Herman
Publisher:Cengage Learning