Important Questions of Switchgear: 1. What do you understand by switchgear ? 2. Discuss the various types of switches. 3. What is the difference between (i) a switch and circuit…

Important Questions of Voltage Control: 1. Discuss the importance of voltage control in the modern power system. 2. What are the various methods of voltage control in a power system…

Introduction to Protective Relays Articles: Basic Ideas of Protection Relay : Basic Ideas of Protection Relay should ensure the availability of electrical energy without interruption to every load connected to…

Unsymmetrical Fault Articles: Unsymmetrical Faults on Three Power System: Those faults on the power system which give rise to unsymmetrical fault currents (i.e. unequal fault currents in the lines with…

Symmetrical Fault Articles: Symmetrical Faults on 3 Phase System: Most of the Symmetrical Faults on 3 Phase System on the power system lead to a short-circuit condition. When such a…

Switchgear Articles: Switchgear Definition: Switchgear Definition status that, The apparatus used for switching, controlling and protecting the electrical circuits and equipment is known as switchgear. The switchgear equipment is essentially…

Sub Stations Articles: Substation: The assembly of apparatus used to change some characteristic (e.g. voltage, ac. to dc., frequency, p.f. etc.) of electric supply is called a Substation. Sub-stations are…

Protective Relays Articles: Protective Relay: A Protective Relay is a device that detects the fault and initiates the operation of the circuit breaker to isolate the defective element from the…