PROTECTION & SWITCHGEAR [VII Semester EEE]

Author: U.A.Bakshi "VII Semester EEE"

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Publisher	Technical Publications
Product Format	Paper Back
Language Published	English
Volume Number	--
Number of Pages	--
Product ID	9789333211284

PROTECTION & SWITCHGEAR [VII Semester EEE] :

Unit I : Protection Schemes (Chapter - 1)

Principles and need for protective schemes - Nature and causes of faults - Types of faults - Fault current calculation using symmetrical components - Methods of neutral grounding - Zones of protection and essential qualities of protection - Protection schemes.

Unit II : Electromagnetic Relays (Chapter - 2)

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 (Chapters - 3, 4, 5)

Current transformers and potential transformers and their applications in protection schemes - Protection of transformer generator, Motor, Busbars and transmission line.

Unit IV : Static Relays and Numerical Protection (Chapter - 6)

Static relays - Phase, Amplitude Comparators - Synthesis of various relays using static comparators - Block diagram of numerical rekays - Overcurrent protection, Transformer differential protection, Distant protection of transmission lines.

Unit V : Circuit Breakers (Chapters - 7, 8)

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 and Vacuum circuit breakers - Comparison of different circuit breakers - Rating and selection of circuit breakers