Electric relays : principles and applications /

Bibliographic Details
Main Author: Gurevich, Vladimir, 1956- (Author)
Corporate Author: Taylor & Francis
Format: eBook
Published: Boca Raton : CRC Press, 2018.
Series:Electrical and computer engineering
Online Access:Connect to the full text of this electronic book
Item Description:HISTORY<BR>Relays and Horses<BR>From Oersted to Henry<BR>Art Professor Samuel Morse<BR>Edison's Relay<BR>The First Industrial Relays<BR>MAGNETIC SYSTEMS OF ELECTROMAGNETIC NEUTRAL RELAYS<BR>Basic Components of Electromagnetic Relays<BR>Hysteresis and Coercitive Force<BR>Types of Magnetic Systems<BR>Differences Between AC and DC Relays<BR>Some Auxiliary Elements for Improving the Relay Operation<BR>What Happens When a Relay is Energized<BR>Windings of Relays: Types and Design Features<BR>CONTACT SYSTEMS<BR>Designs of Basic Types of Contacts<BR>Silver, Gold, Platinum<BR>Contacts with Two-Stage Commutation<BR>What is the Purpose of ''Contact Pressure?''<BR>Self-Cleaning Contacts<BR>Self-Adjusting Contacts<BR>When Power Does Not Equal Multiplication by Current and Voltage<BR>Split Make-Before-Break. High-Frequency Contacts<BR>Compensation for Shocks and Electro-Dynamic Forces in Contacts<BR>Sparking Contacts and Their Control<BR>High-Power Contact Systems<BR>Mercury Displacement Relays<BR>EXTERNAL DESIGN OF RELAYS<BR>Environmental Impact on Relays<BR>Wood and Cardboard: First Protection Shield for Relays<BR>Is a Sealed Relay Always Better Than Open One?<BR>Outlets, Terminal Sockets and ''Containers'' for Relays<BR>Indicators of Operation and Test Buttons<BR>Relays Which Do Not Look Like Relays at All<BR>REED SWITCHES AND REED SWITCH RELAYS<BR>Who invented the ''Reed Switch''?<BR>Coruscation of Ideas and Constructions<BR>High Power Reed Switches<BR>Membrane Reed Switches<BR>Mercury Reed Switches<BR>High-Voltage Reed Switches<BR>Reed Switches with Liquid Filling<BR>Polarized and Memory Reed Switches<BR>Reed Switch Relays<BR>Mercury Reed Switch Relays<BR>Winding-Free Relays<BR>HIGH-VOLTAGE RELAYS<BR>What is a ''High-Voltage Relay?''<BR>Open Relays for High-Voltage Switching<BR>Vacuum and Gas-Filled High-Voltage Low Power Relays<BR>High Power Vacuum Relays and Contactors<BR>High-Voltage Reed Relays<BR>High-Voltage Interface Relays<BR>ELECTRONIC RELAYS<BR>Was it Thomas A. Edison Who Invented a Vacuum Light Lamp?<BR>Lee De Forest Radio Valve: From its First Appearance Until Today<BR>How a Vacuum Tube Works?<BR>Relays with Vacuum Valves<BR>Gas-Tubes with Relay Characteristics<BR>Power Mercury Valves<BR>Electron-Beam Switching Tubes<BR>Semiconductor Relays<BR>Optoelectronic Relays<BR>Super-Power Electronic Relays<BR>Hybrid Relays<BR>TIME RELAYS<BR>Electromagnetic Time-Delay Relays<BR>Capacitor Time-Delay Relays<BR>Relays with Clockwork<BR>Pneumatic and Hydraulic Time-Delay Relays<BR>Electronic Time-Delay Relays<BR>Attachments to Standard Electromagnetic Relays<BR>Microprocessor Based Time-Delay Relays<BR>Accelerated (Forced) Relays<BR>THERMAL RELAYS<BR>Relays Based on a Bimetallic Thermal Element<BR>Protective Thermal Relays<BR>Automatic Circuit Breakers with Thermal Elements<BR>Dilatometer Relays<BR>Manometric Thermal Relays<BR>Mercury Thermal Relays<BR>Thermal Relays with Reed Switches<BR>Semiconductor Thermal Elements and Thermal Relays<BR>PROTECTIVE CURRENT AND VOLTAGE RELAYS<BR>What are ''Protective Relays''<BR>Current and Voltage Transformers<BR>Instantaneous Current and Voltage Relays<BR>Current Relays with an Independent ''Time-Delays'<BR>Current Relays with Dependent Time-Delay<BR>Harmonic and Voltage Restraint Relays<BR>Pulse Current Relays<BR>POWER AND POWER-DIRECTIONAL RELAYS<BR>Induction-Type Relays<BR>Characteristics of Power Direction Relays<BR>Electro-Dynamic-Type Relays<BR>Electronic Analogs of Power Direction Relays<BR>DIFFERENTIAL RELAYS<BR>Principles of Differential Protection<BR>High-Impedance Differential Relays<BR>Biased Differential Relays<BR>Electromagnetic Percentage Differential Relays<BR>Induction-Type Differential Relays<BR>Harmonic Restraint Differential Relays<BR>Pilot-Wire Differential Relays<BR>DISTANCE RELAYS<BR>Principles and Basic Characteristics of Distance Protection<BR>System Swing<BR>Principles of Distance Relays Construction<BR>Why do Distance Relays Need ''Memory?''<BR>Distance Relays with Higher Performance<BR>Electronic Analogs of Impedance Relays<BR>FREQUENCY RELAY<BR>Why is it Necessary to Control Frequency in Electric Networks?<BR>Charles Steinmetz: Inventor of the Frequency Relay<BR>Induction Frequency Relays<BR>Resonance Relays<BR>Electronic Frequency Relays<BR>MICROPROCESSOR-BASED RELAYS: PROSPECTS AND CHALLENGES<BR>Is It a Relay at All?<BR>Advantages of Microprocessor-Based ''Relays'<BR>Disadvantages of Microprocessor-Based ''Relays''<BR>Summing Up<BR>SPECIAL RELAYS<BR>Polarized Relays<BR>Latching Relays<BR>Sequence Relays<BR>Rotary Relays<BR>Moving-Coil Relays<BR>Amplifier-Driven Relays<BR>Magneto-Hydro-Dynamic Relays<BR>Annunciator Target Relays<BR>Flashing-Light Relays<BR>Buchholz Relays<BR>Safety Relays<BR>Ground Fault Relays<BR>Supervision Relays<BR>Hydraulic-Magnetic Circuit Breakers<BR>BASIC RELAY TERMS AND DEFINITIONS: GLOSSARY<BR>REFERENCES
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