Basics of Control Components

Table of Contents

Electrical Symbols ....................................................................6Line Diagrams .........................................................................16Overload Protection ................................................................21Manual Control .......................................................................31Magnetic Contactors and Starters ..........................................37Contactor and Starter Ratings .................................................42Class 14 NEMA Starters .........................................................45SIRIUS Type 3R Starters .........................................................46Multi-Speed Starters...............................................................48Reversing Starters ..................................................................51Reduced-Voltage Starting .......................................................53Lighting and Heating Contactors ............................................59Pilot Devices ...........................................................................62Control Transformers ...............................................................71Control Relays .........................................................................72Solid-State Switching Devices ................................................76Monitoring Relays ...................................................................78Time Relays ............................................................................79Terminal Blocks and Supplementary Protectors .....................83LOGO! Logic Module ..............................................................85Fast Bus Busbar Adapter System ...........................................87Review Answers .....................................................................89Final Exam ..............................................................................90quickSTEP Online Courses .....................................................96