Electric Relays

Principles and Applications. The electric relay is one of the most frequently used devices in modern technological systems, yet broad information is difficult to locate. There are so many types that most engineers are familiar with only a limited number of relays applicable to very specific devices. This book contains a complete description of electrical relays, their principles of operation, and applications for all basic types. It includes the historical background for various types and discusses the issues of design and the operation principles of relay components for complicated types of relays. The author uses clear

"Engineers, students, technicians who use relays in their work or want to learn how to use relays operate would find this an invaluable reference book that will be constantly used in their work." In IEEE Electrical Insulation Magazine, July/ August 2007, Vol. 23, No. 4

Autorentext
Vladimir Gurevich

Klappentext
The electric relay is one of the most frequently used devices in modern technological systems, yet broad information is difficult to locate. There are so many types that most engineers are familiar with only a limited number of relays applicable to very specific devices. This book contains a complete description of electrical relays, their principles of operation, and applications for all basic types. It includes the historical background for various types and discusses the issues of design and the operation principles of relay components for complicated types of relays. The author uses clear language, avoids heavy mathematics, and includes numerous illustrations for a highly accessible presentation.


Inhalt
History. Magnetic Systems of Electromagnetic Neutral Relays. Contact Systems. External Design of Relays. Reed Switches and Reed Switch Relays. High-Voltage Relays. Electronic Relays. Time Relays. Thermal Relays. Protective Current and Voltage Relays. Power and Power-Directional Relays. Differential Relays. Distance Relays. Frequency Relay. Microprocessor-Based Relays: Prospects and Challenges. Special Relays. Basic Relay Terms and Definitions: Glossary. References.

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