8259A Programmable Interrupt Controller: 8259A Programmable Interrupt Controller - Microprocessor-based system design requires many I/O devices such as keyboards, displays, sensors and other components. These devices should receive servicing in…
Basic Static Relays in Protective System Articles: Basic Elements of Static Relay : The basic elements of a static relay are namely, Input Element: Mixing circuits are needed to sum…
Static Protective Relay Articles: Electronic Relays : Electronic Relays – These were the first to be developed in the series of static relays. They date back to early 1928 when…
Feeder Protection Relay Articles: Application of 3 Phase System : In a Application of 3 Phase System, a wide variety of faults can occur, i.e. phase to phase, phase to…
Application of Relay Articles: Comparator Equation in Power System Protection : Comparator Equation in Power System Protection – Taking a very general case to cover the complete range of conventional…
Working Principle of Relay Articles: Induction Relay Torque Equation : In Induction Relay Torque Equation, Two magnetic fluxes Φ1 and Φ2 differing in time phase penetrate through a disc. These alternating fluxes…
Static Distance Protection Relay: Static Distance Protection Relay are characterized by having two input quantities respectively proportional to the voltage and current at a particular point in the power system,…
Differential Protection Relay in Power System: A Differential Protection Relay in Power System scheme compares quantities derived from the input and output currents of the protected circuit in such a…