A fully up-to-date, hands-on guide to all components of electric motors Electric Motor Maintenance and Troubleshooting, Second Editionprovides a thorough examination of how all types of electric motors work, along with each motor type's components and operation. Augie Hand's more than 40 years of experience working with motors provide him with a wealth of real-world expertise that he shares in detail. He offers time-tested and proven procedures for determining and correcting any type of problem with troubleshooting examples that make the concepts crystal clear. The book is an essential resource for anyone who needs to buy, install, troubleshoot, maintain, or repair small to industrial-size electric motors. New information on three-phase motors is included along with updates to the material on test instruments. Make quick, accurate analyses and find effective solutions with help from this updated classic. Electric Motor Maintenance and Troubleshooting, Second Editionfeatures: New coverage of three-phase motors and new types of test instruments Explanations of basic principles of all types of motors Photos and diagrams Details on DC motors and AC motors Techniques for examining faulty motors to identify the cause of failure, as well as how to determine if the replacement motor could fail if that cause is not corrected Coverage of transformer theory Troubleshooting techniques for all the components of all motors, including bearings Practical coverage: The DC Machine; Troubleshooting and Testing the DC Machine; AC Electric Motor Theory; The Single-Phase Motor; Three-Phase Induction Motor; Dual-Voltage Nine-Lead Motor's Internal Connections; Troubleshooting the Nine-Lead Motor; Troubleshooting Less Common Motors; Test Instruments and Services