Understand all types of motors with the 2005 All About Motors
Item #: 320-8038-05
ISBN: 140188038X
ISBN13: 978-1-4018-8038-5
Author: National Joint Apprenticeship Training Committee Publisher: Thomson Delmar Learning Format: Paperback
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A practical blend of theory, diagrams, graphs, drawings, and photos combine in this book to assist readers in developing a complete understanding of all types of electric motors, generators, and alternators. All About Motors comprehensively examines such concepts as magnetic and inductive theory, characteristics of various types of motors, and the speed control of AC and DC motors that provide the necessary background for a thorough understanding of rotating equipment. Basic concepts of rotation are skillfully applied to the complex theories of rotor phase angles and their effect on torque so technicians learn effective service and troubleshooting techniques as well as motor operations. The knowledge gained will give students a foundation to develop into journeymen who can be counted on to successfully handle all aspects of the electrical industry.
Features:
Contributions to this book are a culmination of both field experiences and
academic achievements, with over 140 years of accumulated experience in all
aspects of the electrical industry
A careful ordering of topics moves readers through the basics and provides
a framework for the mastery of more complex concepts
Allows readers to access information in-depth, not just in general terms
as in many publications
Testing and troubleshooting procedures are explained with an eye to
execution within the strictest of industry safety precautions
The clear presentation of material is suitable for novices and experienced
electricians alike
All About Motors - Table of Contents:
Rules, Glossary, and Formulas:
Electrical Rules
Glossary of Electrical Terms
Formulas
Magnetism, Electromagnetism, and Induction (Basic, Self-, and
Mutual):
Magnetism
Electromagnetism
Induction
AC Alternators:
Introduction
Construction of the Stator
Construction of the Rotor
Types of Alternators
Theory of Operation
Determining Alternator Frequencies
Rating Alternators
Output Voltage of Alternators
Resistance, Reactance, and Reaction of Alternators
Paralleling Alternators
Load Sharing
Shutting Down One Unit
The Rotating Field in the Polyphase Motor:
Origin of the Rotating Field
Effect of Alternator Poles on Motor Speed
Frequency and its Effects on Rotation
Rotation in a Two-Pole Delta
Rotation in a Two-Pole Wye
Polyphase Motors:
Reading the Nameplate of the Polyphase Motor
Construction of the Stator
Construction of the Rotor
Stator Windings in a Wye Connection
Stator Windings in a Delta Connection
Foreign Motors: Delta-Low and Wye-High Connections
U.S. Motors on 50 Hz
Polyphase ACA or Shunt-Commutator Motors
Classification of Motors According to Rotor Design
Efficiency of Polyphase Motors
Power Factor in Polyphase Motors
Motor Losses
Operating Characteristics of Polyphase Motors
Consequent-Pole Polyphase Motors
Multispeed Polyphase Motors
Nema Standards
Wound-Rotor Motors
Construction of the Stator
Speed of the Wound-Rotor Motor (Stator)
Applications
Construction of the Rotor
Operating Characteristics
Locked-Rotor Stator Currents
Monitoring Rotor Currents
rque of the WRM
Speed Control of the WRM
Efficiency of the WRM
Starters of the WRM with Pneumatic-Timing Acceleration Control
Starters of the WRM with Compensated Acceleration Control
Regulators of the WRM
Synchronous Motors:
Construction of the Stator
Construction of the Rotor
Reduced Voltage Starting (Stator)
Applications
Starting the Synchronous Motor
The Polarized-Frequency Relay
The Out-Of-Step Relay
The Exciter Generator
The AC Ammeter
The DC Ammeter
Operating Characteristics
Power-Factor Correction Using a Synchronous Motor
The Brushless Synchronous Motor
The Alternating Field in a Single-Phase Motor:
Alternating Field in a Single-Phase Motor
Phase Shift in a Single-Phase Motor
Placement of Phase Shift (Start Winding) in the Stator
All About Motors
