Introduction to Gas Insulated Substations / Switchgears (GIS)
Gas-insulated substations (GIS) have been used in power systems over the last three decades because of their high reliability, easy … Continue Reading
Switchgear
Low Voltage Switchgear
Low voltage switchgear, according to IEC 60947, refers to switchgears with rated voltages up to 1000 V AC and 1500 … Continue Reading
Substation Earthing System Design
We have already given an introduction to substation earthing system in an article published earlier. Today we are going to … Continue Reading
Basic Relays – Electromagnetic Attraction and Induction Relays
Most of the relays used in the power system operate by virtue of the current and/or voltage supplied by current … Continue Reading
Solid State Relays (Static Relays)
What is a Static Relay? There are two basic classifications of relays – Electromechanical Relays and Solid State Relays (Static … Continue Reading
All Day Efficiency of Transformer
Definition The ratio of output in kWh to the input in kWh of a transformer over a 24-hour period is … Continue Reading
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
Load Forecasting – Purpose, Classification and Procedure
What is Load Forecasting? Electrical energy cannot currently be stored in large amounts. It has to be generated whenever there … 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