A switchgear is a device that opens and closes an electrical circuit (the simplest example being a light switch). These devices are important in the function of electrical systems in power stations as well as commercial and industrial facilities. This edition aims to cover all the major aspects of switchgear design, applications, safety and maintenance. With the expansion in the use of computers, solid state control devices and programmable controls, engineers, electrical contractors and other technical specialists need an understanding of the information provided in this book to meet today's needs in selecting and specifying switchgear and control equipment. Features of this third edition include sections on lighting protection for buildings, electrical equipment and distribution systems, high and low voltage electrical distribution cable, machine and process line control using programmable controllers and computers.... Rating aiecept*cle Rating Configuration NEMA ANSI Wiring Diagram 30A 3* 250V 50A 3* 250V 15A I125/250V 20A I125/250V 30A I125/250V 50A I125/250V 60A I 125/ 250V ... FIGURE 1.4 Electrical outlet receptacle symbols and ratings.
|Title||:||Switchgear and Control Handbook|
|Author||:||Robert W. Smeaton, William H. Ubert|
|Publisher||:||McGraw-Hill Companies - 1998|