Pub. Date:
Cengage Learning
Electric Motor Control / Edition 6

Electric Motor Control / Edition 6

by Walter N. Alerich, Stephen L. Herman


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Fully updated in this new sixth edition, this text has been a long-standing leader in the area of electric motor controls. Its success is based on clear explanations of motor control circuits, the hardware that makes up these circuits, applications of motor control circuits in industry, and troubleshooting motor controls. It includes strong coverage of relay controls, the backbone of the motor control industry.

Product Details

ISBN-13: 9780827384569
Publisher: Cengage Learning
Publication date: 01/28/1998
Edition description: Older Edition
Pages: 342
Product dimensions: 8.56(w) x 10.88(h) x 0.57(d)

About the Author

Walter Alerich, BVE, MA, has an extensive background in electrical installation and education. As a journeyman wireman, he has had many years of experience in the practical applications of electrical work. Mr. Alerich has also served as an instructor, supervisor and adminstrator of training programs, and is well-aware of the need for effective instruction in this field. A former department head of the Electrical-Mechanical Department of Los Angeles Trade and Technical College, Mr. Alerich has written extensively on the subject of electricity and motor controls. He presently serves as an international specialist/consultant in the field of electrical trades, developing curricula and designing training facilities.

Stephen L. Herman--both an electrician and a teacher for more than 30 years--authored numerous popular textbooks on the subjects of electricity and mathematics. Now retired, Mr. Herman spent two decades as lead instructor for the Electrical Technology Curriculum at Lee College in Baytown, Texas, where he received an Excellence in Education Award from the Halliburton Education Foundation. He also taught at Randolph Community College in Asheboro, North Carolina, for nine years, and helped establish an electrical curriculum for Northeast Texas Community College in Mount Pleasant, Texas. Additional publications include DELMAR'S STANDARD TEXTBOOK OF ELECTRICITY, INDUSTRIAL MOTOR CONTROLS, UNDERSTANDING MOTOR CONTROLS, ELECTRIC MOTOR CONTROL, ELECTRONICS FOR ELECTRICIANS, ELECTRICAL WIRING INDUSTRIAL, ALTERNATING CURRENT FUNDAMENTALS, DIRECT CURRENT FUNDAMENTALS, ELECTRICAL STUDIES FOR TRADES, ELECTRICAL PRINCIPLES, ELECTRICAL TRANSFORMERS AND ROTATING MACHINES, EXPERIMENTS IN ELECTRICITY FOR USE WITH LAB VOLT, THE COMPLETE LABORATORY MANUAL FOR ELECTRICITY, and PRACTICAL PROBLEMS IN MATHEMATICS FOR ELECTRICIANS.

Table of Contents

INTRODUCTION: General Principles of Electric Motor Control. Fractional & Integral Horsepower Manual Motor Starters. Magnetic Line Voltage Starters. CIRCUIT LAYOUT, CONNECTIONS & SYMBOLS: Symbols. Interpretation & Application of Simple Wiring & Elementary Diagrams. CONTROL PILOT DEVICES: Push Buttons & Control Stations. Relays. Contactors. Timing Relays. Pressure Switches & Regulators. Float Switches. Flow Switches. Limit Switches & Proximity Control. Phase Failure Relays. Solenoid Valves. Temperature Switches. BASIC CONTROL CIRCUITS: Two-wire Controls. Three-wire & Separate Controls. Hand-off Automatic Controls. Multiple Push-button Stations. Interlocking Methods for Reversing Control. Sequence Control. Jogging (Inching) Control Circuits. Time-delay, Low-voltage Release Relay. AC REDUCED VOLTAGE STARTERS: The Motor & Starting Methods. Primary Resistor-type Starters. Autotransformer Starters. Part Winding Motor Starters. Automatic Starters for Star-Delta Motors. AC Solid-State Reduced Voltage Controller. THREE-PHASE, MULTISPEED CONTROLLERS: Controllers for Two-speed, Two-winding (Separate Winding) Motors. Two-speed, One-winding (Consequent Pole) Motor Controller. Four-speed, Two-winding (Consequent Pole) Motor Controller. WOUND ROTOR (SLIP RING) MOTOR CONTROLLERS: Wound Rotor Motors & Manual Speed Control. Push-button Speed Selection. Automatic Acceleration for Wound Rotor Motors. Automatic Speed Control for Wound Rotor Motors. Solid-state Adjustable Speed Controller for AC Wound Rotor Motors. SYNCHRONOUS MOTOR CONTROLS: Synchronous Motor Operation. Push-button Synchronizing. Timed Semiautomatic Synchronizing. Synchronous Automatic Motor Starter. DIRECT-CURRENT CONTROLLERS: About DC Motors. Use of Reduced Voltage for Starting. Across-the-line Starting. Compensating & Definite Time Control Starting. Solid State Adjustable Speed Control. METHODS OF DECELERATION: Plugging. Electric Brakes. Dynamic & Regenerative Braking. Electric & Electronic Braking. MOTOR DRIVES: Direct Drives & Pulley Drives. Gear Motors. Variable Frequency Mechanical Drives. AC Adjustable Frequency Solid State Drives. Magnetic Clutch and Magnetic Drive. DC Variable Speed Control--Motor Drives. Programmable & Motion Control. Motor Startup & Troubleshooting Basics. APPENDIX A Motor Types & Line Diagrams. APPENDIX B Power Supplies & Circuits. GLOSSARY. INDEX.

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