Basics of AC Motors

Table of Contents

Introduction...............................................................................2AC.Motors.................................................................................4Force.and.Motion......................................................................6AC.Motor.Construction............................................................2Magnetism.............................................................................. 7Electromagnetism...................................................................9Developing.a.Rotating.Magnetic.Field.....................................24Rotor.Rotation..........................................................................29Motor.Specifications................................................................34NEMA.Motor.Characteristics...................................................37Derating.Factors......................................................................43AC.Motors.and.AC.Drives........................................................45Matching.Motors.to.the.Load..................................................49Motor.Enclosures....................................................................53Mounting.................................................................................56Siemens.AC.Induction.Motors.................................................6Review.Answers......................................................................72Final.Exam...............................................................................73quickSTEP.Online.Courses......................................................76