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Informationen zum Autor L. W. BRITTIAN is a licensed electrician with extensive experience in heavy industry such as refineries, petrochemical plants, and oil and gas production. He has authored numerous training materials for the electrical trades, taught at Texas A&M University and Texas State Technical College, and presented electrical training classes in Africa, Canada, Malaysia, and the United States. Klappentext Answers at your fingertips This hands-on guide will help you trouble-shoot and solve electrical problems in industrial and commercial settings. You'll find plain-English explanations for a wide range of electrical equipment and systems, from transformers and switchgears to alarm and wiring systems. Use this book to quickly access reliable information and improve your on-the-job skills. Get useful rules of thumb and quick tricks Discover formulas, charts, and tables essential for plant electrical work Locate technical data quickly and get up to speed on everyday electrical questions Packed with illustrations that help you grasp ideas quickly and easily Zusammenfassung Helps you trouble-shoot and solve electrical problems in industrial and commercial settings. This book offers explanations for a wide range of electrical equipment and systems! from transformers and switchgears to alarm and wiring systems. It is packed with illustrations that help you grasp ideas. Inhaltsverzeichnis Introduction xiii Disclaimer xv Chapter 1 The Laws That Control and Explain Electricity 1 Power Factor 3 Three-Phase Power 6 Circuit Protective Devices 9 Chapter 2 Power Generation and Distribution Within Commercial and Industrial Facilities 11 Electrical Power Generators 17 Total Loads Served 17 Types of Onsite Power Generation 18 Chapter 3 Power, Control, and Lighting Transformer 21 Electrical Power 24 Insulation Material Temperature Rise 25 Grounding 26 Terminal Connection Markings 26 Three-Phase, Oil-Cooled Power Transformers 26 Three-Phase Dry-Type Transformers 28 Dry-Type Single-Phase Control Circuit Transformers 29 Chapter 4 Electrical Switchgear 31 Motor Control Center 31 Primary Functions of Switchgear 32 Low-Voltage Power Distribution 33 Bus Bar and Circuit Breaker Arrangements 34 Optional Protective Devices 37 Metal-Clad Switchgear 38 Continuous Current Ratings 38 Arc-Resistant Switchgear 39 Chapter 5 Electrical Circuit Protective Devices 41 Molded Case Circuit Breakers 43 Miniature Circuit Breakers 45 Vacuum Circuit Breakers 45 Insulated Case Circuit Breakers 47 Low-voltage Power Circuit Breakers 47 Supplemental Protectors 47 Motor Circuit Protectors 47 Oil Circuit Breakers 48 Gas Insulated Circuit Breakers 48 Fuses 48 Circuit Breaker Maintenance 50 Coordination Between Protective Devices 51 Chapter 6 Personnel Protective Devices 53 Introduction 53 Ground Fault Protection of Equipment 56 History and Nomenclature of GFCIs in the United States 56 Troubleshooting GFCIs 57 Time and Current Levels Protected by Circuit Breakers 58 Arc Fault Circuit Interrupters 59 Chapter 7 Three-Phase Motors 61 Electric Motor Principles of Operation 62 Rated Full Load Speed 66 Service Factor 67 Rated Ambient Temperature 67 Stator Winding Insulation Classes 68 Types of Torque Produced by a Motor 68 Chapter 8 Controlling and Protecting Three-Phase Motors 71 Components of a Motor Starter 71 Motor Starter Sizes 72 Methods of Starting Three-Phase Induction Motors 73 Full Voltage...
