Switchgear & Protection
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Switchgear & Protection Syllabus — Unit-wise Content
The official GTU curriculum for Switchgear & Protection (subject code 3360901) as prescribed for EC · Semester 6 divides the course into 6 units, covering 38 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (3360901)Unit 1 Elements of Protection
- 1.1. Need of protective system
- 1.2. Functions of basic elements of a protective system.
- 1.3. Types, causes and effects of various Faults.
- 1.4. Protection zones : Backup protection zones
- 1.5. Protective Transformers: Specifications and Connection diagram of Current Transformer and Potential Transformer (single phase and 3 phase)
- 1.6. Current limiting reactors.
- 1.7. Neutral Earthing
Unit 2 Circuit Interrupting Devices
- 2.1. Interrupting devices: Sequence of operation and interlocking
- 2.2. Fuse, types, characteristics, testing and applications
- 2.4. Circuit breaker: Arc phenomena and arc extinction, Construction, working principle of Oil circuit breakers, Air break, Air Blast, Sulphur Hexa Fluoride (SF6) and vacuum circuit breakers.
- 2.6. Testing of circuit breaker
- 2.7. Resistance switching
- 2.8. Working principle of arc quenching in HVDC circuit breaker
Unit 3 Protective Relays
- 3.1. Protective relay, classification and selection: Terms related to relay
- 3.2. Principle of working, construction and operation of electromagnetic induction(shaded pole,watt-hour meter and induction cup),Thermal relay
- 3.3. Settings of various types of relays
- 3.4. Directional relay
- 3.5. Distance relay(impedance, Switchgear and Protection Course Code: 3360901 GTU/ NITTTR Bhopal/14-15 Gujarat State 3 Unit Major Learning Outcomes ( in Cognitive Domain) Topics and Sub-topics reactance and mho)
- 3.6. Negative phase sequence relay
- 3.7. Static relay, Construction and types
- 3.8. Principle and working of Microprocessor based relay
- 3.9. Maintenance and testing of relays
Unit 4 Protection of Transmission Line and Feeder
- 4.1. Transmission line protection scheme
- 4.2. protection scheme -Overload protection, Over-current and earth fault protection, Time graded and current graded protection, Current balance differential protection
- 4.3. Carrier aided protection, Carrier inter-tripping, acceleration and blocking scheme
- 4.4. Distance /Impedance protection
- 4.5. types of Auto reclosing
- 4.6. Protection of parallel feeders and Ring Mains
Unit 5 Protection of Transformer, Alternator, Motor and Busbar
- 5.1. Over current, Percentage differential and restricted earth fault protection of Transformers
- 5.2. Inrush phenomenon and over fluxing phenomenon in Transformer
- 5.3. Buchholz Relay, analysis of trapped gases
- 5.4. Various faults and abnormal operating conditions in Alternator and its protection schemes
- 5.5. Various faults and abnormal occurring in the Motor and its protection schemes
- 5.6. Differential Protection of Bus bars
Unit 6 Over Voltage Protection
- 6.1. Causes of over voltages
- 6.2. Methods of reducing over voltages
- 6.3. Operating principles, construction and applications of lightning arrester
- 5.7. Insulation co-ordination, volt- time characteristic and basic impulse insulation level Switchgear and Protection Course Code: 3360901 GTU/ NITTTR Bhopal/14-15 Gujarat State 4
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