Non Indirectional Induction Overcurrent Relay – Construction
Non-directional Induction Overcurrent Relay: This relay is also called earth leakage induction type relay. The …
Switchgear and Protection
Types of Induction Relays & Torque Equation Derivation
Induction Relays: The induction type relays are also called magnitude relays. These relays work …
Electromagnetic Attraction Relays – Working & Construction
Electromagnetic Attraction Relay: In Electromagnetic Attraction Relays, there is a coil which energises an electromagnet.When the operating current becomes large, …
Synthetic Testing of Circuit Breakers
Synthetic Testing of Circuit Breakers: Synthetic testing of circuit breakers is a process that allows for the simulation of various …
HVDC Circuit Breaker Working Principle & Construction
HVDC Circuit Breaker: In a.c circuit breakers, arc extinction is achieved at the natural …
What is Arc phenomenon in Circuit Breakers?
What is Arc in Circuit Breakers? During the separation …
SF6 Circuit Breakers – Construction & Working Principle
Sulphur Hexafluoride(SF6) circuit breaker: In SF6 circuit breakers, sulphur hexafluoride …
Working Principle & Types of Air Blast Circuit Breakers
Air Blast Circuit Breakers: This is the working principle of air blast circuit …
Types of Oil Circuit Breakers – Bulk Oil & Minimum Oil
Oil Circuit Breakers: In such circuit breakers, some insulating oil (e.g., transformer oil) is …
Vacuum Circuit Breaker – Construction & Working Principle
Vacuum Circuit Breakers(VCB): In Vacuum Circuit Breakers, vacuum (degree of vacuum being in the …