Vacuum Circuit Breaker (VCB) – Principle, Construction and Working
What is VCB? VCB stands for Vacuum Circuit Breaker. In vacuum circuit breakers, the vacuum is used as the arc quenching … Continue Reading
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Parallel Operation of Single Phase Transformers
By parallel operation of single-phase transformers, we mean two or more transformers are connected to the same supply bus bars on … Continue Reading
Power Transformer Testing Methods – Type, Routine & Special Tests
An electrical power transformer has to go through a number of transformer testing procedures for confirming its specifications and performances. … Continue Reading
Insulation Resistance Test (IR Test) or Megger Test
Insulation Resistance or IR Test is carried out by maintenance engineers to ensure the healthiness of the overall insulation system … Continue Reading
SF6 Circuit Breakers – Construction, Types and Working
In an SF6 Circuit breaker, sulphur hexafluoride gas is used as the arc quenching medium. The sulphur hexafluoride gas (SF6) is … Continue Reading
Air Blast Circuit Breaker – Construction, Working and Types
Air blast circuit breaker employs a high-pressure air blast as an arc quenching medium. The construction and working of different … Continue Reading
Substation Earthing System ( Grounding System ) – Earthing Mat
The substation earthing system comprises of a grid (earth mat) formed by a horizontal buried conductors. Read about design of substation … Continue Reading
Steam Power Stations – Arrangement and Working
Steam power stations convert the heat energy of coal combustion into electrical energy. A steam power station basically works on the … Continue Reading