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Chapter 16

Operational Power

Control Systems

Chapter 15 dealt with the equipment used for electrical power con-
trol. Now, the operational power control systems will be discussed in Chapter

16. Some specific applications of the equipment and devices that were
    studied in Chapter 15 will be investigated in this chapter.

IMPORTANT TERMS

Chapter 16 deals with operational power control systems. After
studying this chapter, you should have an understanding of the following
terms:

Start-Stop Pushbutton
Normally Open (NO) Pushbutton
Normally Closed (NC) Pushbutton
Overload Protection
Jogging
Limit Switch
High-Low Speed Selection
Magnetic Contactor
Full-Voltage Starting
Primary Resistance Starting
Primary Reactor Starting
Wye-Delta Starting
Autotransformer Starting
Part-Winding Starting
Direct Current (DC) Starting Systems
Forward-Reverse-Stop Control
Three-phase Alternating Current (AC) Motors