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Buchholz Relay

Buchholz Relay: Buchholz Relay is a gas-actuated relay installed in oil immersed transformers for protection against all kinds of faults. Named after its inventor, Buchholz, it is used to give an…

Static Relays Articles: Characteristic Functions of Protection Relay Generator Transformer Protection Influence of Static Protective Relays Level Detector Overcurrent Relay Polarised Relay Static Relay Time Delay Circuit Transistor Switch Circuit…

Principles of Power System Articles

Principles of Power System Articles: This Principles of Power System Articles which includes the following topics: Electrical Energy Definition Different Types of Energy Sources Unit of Energy Energy Efficiency Definition…

AC Excitation System – Block diagram and Working Principle

AC Excitation System - Block diagram and Working Principle: This AC Excitation system consists of an alternator and thyristor rectifier bridge directly connected to the main alternator shaft. The main…

Regulated and Switching Power Supplies Articles

Regulated and Switching Power Supplies Articles: Regulated and Unregulated Power Supply: Almost all electronic devices used in electronic circuits need a dc source of power to operate. The source of…

Electrical Power Engineering Articles

Electrical Power Engineering Articles: This Electrical Power Engineering Articles which includes the following topics: Refrigeration Cycle Diagram Explain Vapour Compression Refrigeration System Explain Vapour Absorption Refrigeration System Thermoelectric Refrigeration System…

Difference between Static Relays and Electromagnetic Relays

Difference between Static Relays and Electromagnetic Relays: The conventional electromagnetic relays are robust and quite reliable, but are required to operate under different forces under fault conditions. This leads to…

Voltage Balance Differential Relay

Voltage Balance Differential Relay: In this voltage balance differential relay arrangement, two similar current transformers are connected at either end of the system element under protection (such as a feeder)…