Complete Notes Link – Unit 2 Link – Unit 3 Link – Unit 4 Link – Unit 5 Link – Unit 6 Link – Old Material Links Switchgear and Protection Notes Details UNIT – I Circuit Breakers-1 Circuit Breakers: Elementary principles of arc interruption, Recovery, Restriking Voltage and Recovery voltages.- Restriking Phenomenon, Average and Max. RRRV, Numerical Problems – Current Chopping and Resistance Switching – CB ratings and Specifications: Types and Numerical Problems. – Auto reclosures UNIT – II Circuit Breakers-2 Description and Operation of following types of circuit breakers: Minimum Oil Circuit breakers, Air Blast Circuit Breakers, Vacuum and SF6 circuit breakers. UNIT – III Electromagnetic and Static Relays The principle of Operation and Construction of Attracted armature, Balanced Beam, induction Disc and Induction Cup relays.

Acquire knowledge to represent the power system data in per unit and consider. Rao Switchgear and Protection, Khanna Publications, 2008. Buy Switchgear Protection and Power Systems eBook By Sunil S. Rao PDF Online. ISBN 328 from KHANNA PUBLISHERS. Download Free.

Relays Classification: Instantaneous, DMT and IDMT types. Application of relays: Over current/ Under voltage relays, Direction relays, Differential Relays, and Percentage Differential Relays. Universal torque equation, Distance relays: Impedance, Reactance and Mho and Off-Set Mho relay, Characteristics of Distance Relays and Comparison. Static Relays: Static Relays verses Electromagnetic Relays UNIT – IV Generator Protection Protection of generators against Stator faults, Rotor faults, and Abnormal Conditions. Restricted Earth fault and Inter-turn fault Protection. Numerical Problems on% Winding Unprotected.

UNIT – V Transformer Protection Protection of transformers: Percentage Differential Protection, Numerical Problem on Design of CT s Ratio, Buchholtz relay Protection. Switchgear and Protection Notes – SGP Notes Details UNIT – VI Feeder and Bus-Bar Protection Protection of Lines: Over Current, Carrier Current and Three-zone distance relay protection using Impedance relays. Translate Relay. Protection of Bus bars – Differential protection. UNIT – VII Neutral Grounding Grounded and Ungrounded Neutral Systems.- Effects of Ungrounded Neutral on system performance. Methods of Neutral Grounding: Solid, Resistance, Reactance – Arcing Grounds and Grounding Practices.

UNIT – VIII Protection against overvoltages Generation of Over Voltages in Power Systems.-Protection against Lightning Over Voltages – Valve type and Zinc-Oxide Lighting Arresters – Insulation Coordination -BIL, Impulse Ratio, Standard Impulse Test Wave, Volt-Time Characteristics. Sv550 yamaha 724 driver win7. TEXTBOOKS: Switchgear and Protection Notes – SGP Notes – SGP Pdf Notes • Switchgear and Protection – by Sunil S Rao, Khanna Publishers • Power System Protection and Switchgear by Badari Ram, D.N Viswakarma, TMH Publications REFERENCE BOOKS: Switchgear and Protection Notes – SGP Notes – SGP Pdf Notes • Fundamentals of Power System Protection by Paithankar and S.R.Bhide.,PHI, 2003 • Art & Science of Protective Relaying – by C R Mason, Wiley Eastern Ltd. • Electrical Power Systems – by C.L.Wadhwa, New Age International (P) Limited, Publishers, 3rd edition • A Textbook on Power System Engineering by B.L.Soni, Gupta, Bhatnagar, Chakrabarthy, Dhanpat Rai & Co. Note:- These notes are according to the r09 Syllabus book of.In R13,8-units of R09 syllabus are combined into 5-units in the r13 syllabus.