EE8602 Protection and Switchgear Syllabus Notes Question Paper Question Banks with answers Anna University
Anna University Protection and Switchgear Syllabus Notes Question Bank Question Papers Regulation 2017
EE8602 Protection and Switchgear Syllabus Regulation 2017
Principles and need for protective schemes – nature and causes of faults – types of faults – Methods of Grounding – Zones of protection and essential qualities of protection – Protection scheme
UNIT II ELECTROMAGNETIC RELAYS
Operating principles of relays – the Universal relay – Torque equation – R-X diagram – Electromagnetic Relays – Over current, Directional, Distance, Differential, Negative sequence and Under frequency relays.
UNIT III APPARATUS PROTECTION
Current transformers and Potential transformers and their applications in protection schemes – Protection of transformer, generator, motor, bus bars and transmission line.
UNIT IV STATIC RELAYS AND NUMERICAL PROTECTION
Static relays – Phase, Amplitude Comparators – Synthesis of various relays using Static comparators – Block diagram of Numerical relays – Over current protection, transformer differential protection, distant protection of transmission lines.
UNIT V CIRCUIT BREAKERS
Physics of arcing phenomenon and arc interruption – DC and AC circuit breaking – re-striking voltage and recovery voltage – rate of rise of recovery voltage – resistance switching – current chopping – interruption of capacitive current – Types of circuit breakers – air blast, air break, oil, SF6, MCBs, MCCBs and vacuum circuit breakers – comparison of different circuit breakers – Rating and selection of Circuit breakers.
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