Circuit Breaker Ratings
The rating of circuit breaker is given according to the duties that are performed by it. For complete specifications, standard … Continue Reading
Power System
Lightning Arrester – Location, Rating and Selection
A lightning arrester is connected to protect a piece of equipment from lightning and switching surges. Overvoltages may cause the … Continue Reading
Condition Monitoring for Transformers
Condition monitoring for transformers is the process of monitoring a parameter of conditions in transformer (moisture, temperature, etc.), in order … Continue Reading
Circuit Breakers – Objective Questions – Part 2
Part 1Part 2Part 3Part 4Part 5 16. Out of the following circuit breakers, which one has the lowest voltage … 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
Different Types of Circuit Breakers
A circuit breaker is a switching device which can be operated manually as well as automatically for controlling and protection … Continue Reading
Methods of Arc Extinction in Circuit Breaker
The selection of an appropriate arc extinction method depends on several factors, including the voltage level of the circuit, the … 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
Power Transformer and Distribution Transformer
The power transformer and distribution transformer are an important part of an electrical power distribution network. They are classified based … Continue Reading
Why Three Phase System Preferred Over Higher Phases?
A three-phase system is universally employed for a generation, transmission, and distribution of electric power. There are several reasons for … Continue Reading