Protection and Switchgear Lecture Notes, Study Materials and Important questions answers
Subject : Protection and Switchgear PROTECTION SCHEMES 1. 2. 3. 4.
Fundamentals of Power System Protection - Answer (click here) Consequences of occurrence of Faults - Answer (click here) Zones and types of Protection system - Answer (click here) Protection System Requirements and some basic terminologies used Answer (click here)
5.
Protection against over voltages due to lightning and switching - Answer (click here)
6. 7. 8. 9.
Arcing Grounds - Answer (click here) Surge absorber - Answer (click here) Surge diverter - Answer (click here) Types and Method of Neutral Earthing in Power Distribution - Answer (click here)
ELECTROMAGNETIC RELAYS 1. 2. 3. 4. 5. 6. 7.
Types of Electromagnetic Relay - Answer (click here) Over Current Relay: Working Principle and Types - Answer (click here) Directional Over Current Relays - Answer (click here) Distance relay - Answer (click here) Impedance Relay - Answer (click here) Differential Relay - Answer (click here) Static relays - Answer (click here)
APPARATUS PROTECTION 1. 2. 3. 4. 5.
Over current and earth fault protection - Answer (click here) Transformer Protection - Answer (click here) Buchholz relay: Operation, Advantages, Applications - Answer (click here) Generator protection - Answer (click here) Protection of bus bars - Answer (click here)
6. 7.
Zones and types of Protection system - Answer (click here) Current Transformers(CT)s and Potential Transformer(PT)s and their applications in protection schemes - Answer (click here)
STATIC RELAYS AND NUMERICAL PROTECTION 1. 2. 3. 4. 5. 6.
Formation of arc during circuit breaking - Answer (click here) AC and DC circuit breaking - Answer (click here) Restriking voltage and recovery voltage - Answer (click here) Rate of rise of recovery voltage - Answer (click here) Resistance switching - Answer (click here) Current Chopping - Answer (click here)
CIRCUIT BREAKERS 1. 2. 3. 4. 5. 6.
Rating of Circuit Breaker - Answer (click here) Air blast circuit breaker: Working principle, Advantages, Disadvantages - Answer (click here) Oil circuit breakers: Types, Construction, Operation, Advantages, Disadvantages - Answer (click here) SF6 circuit breaker: Construction, Operation, Advantages, Disadvantages - Answer (click here) Vacuum circuit breakers: Construction, Operation, Advantages, Disadvantages - Answer (click here) Testing of circuit breakers - Answer (click here)