Oil Circuit Breakers – Types, Working and Construction
In oil circuit breakers, some insulating oil (e.g., transformer oil) is used as an arc quenching medium. Working Principle of … Continue Reading
Circuit Breaker
Primary and Back-up Protection in Power System
Primary and Back-up Protection Primary protection (Main protection) is the essential protection provided for protecting an equivalent/machine or a part … Continue Reading
Circuit Breakers – Interview Questions with Answers
1. What is a Circuit Breaker? Circuit Breaker is a mechanical device designed to close or open contact members, thus … Continue Reading
Types of Electrical Relays
We have already discussed the working of electrical relays. Now we are going through different types of electrical relays. There … Continue Reading
Low Voltage Circuit Breakers – Design and Construction Basics
In this article, we are going to study the basics of low voltage circuit breaker design and construction. The operation … Continue Reading
Sag in Overhead Transmission Lines
The difference in level between points of supports and the lowest point on the conductor is called sag in overhead transmission lines. … Continue Reading
Corona Effect in Power System
What is Corona? The phenomenon of violet glow, hissing noise and production of ozone gas in an overhead transmission line is … Continue Reading
Function of Protective Relays in Power System
We usually think of an electric power system in terms of its more impressive parts – the big generating stations, transformers, … Continue Reading
IEC 61850 – Substation Automation – Fundamentals
What is IEC 61850? IEC 61850 is a standard for the design of electrical substation automation. It is the base … Continue Reading
Basic Types of Switchgear Components
Before learning about different switchgear components, let us understand what is switchgear. The apparatus used for switching, controlling and protecting … Continue Reading