SF3302 Syllabus - Electrical Technology And Safety - 2021 Regulation Anna University

SF3302 Syllabus - Electrical Technology And Safety - 2021 Regulation Anna University

SF3302	ELECTRICAL TECHNOLOGY AND SAFETY	LTPC

3003

OBJECTIVES:

• Understand the basic principles of operation of rotating electric machines (Generators and Motors), their classification and basic efficiency and performance characteristics
• Brief the legislative requirements for electrical safety- national/international laws/codes of practices/ standards and/or regulations
• Use a “Status Check” survey to assess the facility’s electrical safety program and where necessary develop strategies for improvement
• Identify persons who may be exposed to a source of electrical energy directly or indirectly
• Describe the essential parts of a Flash Hazard Analysis and list the data required analysis.

UNIT I	ELEMENTARY IDEAS OF DC MACHINES, TRANSFORMERS AND RELAYS	9

Construction and Principle of operation of D.C machines - e.m.f equation of a generator - losses and efficiency. Construction and Principle of operation of single phase transformers - e.m.f equation - phase diagrams - equivalent circuit - regulation - losses and efficiency. Protective relays - Requirement of relay - types of protection – classification - distance relay, differential relay, state relays.

UNIT II	SYNCHRONOUS, INDUCTION MOTOR, AND THEIR ELECTRICAL CIRCUIT BREAKERS	9

Synchronous machines - types - e.m.f equation - winding factors - armature reaction and leakage resistance. applications. Induction Motors – Construction and principle of operation - equivalent circuit - Torque - slip characteristics - method of starting - applications. Circuit breakers - function of switch gear - arc phenomenon - initialization of an arc – arc interruption - recovery voltage and restriking voltage - MCB and ELCB. Faults in power systems - causes - types.

UNIT III	ELECTRICAL GROUNDING, EARTHLING AND INSULATION	9

Fuses - types - selection - advantages and disadvantages. Grounding - neutral grounding – solid grounding - resistance grounding - arc suppression coil grounding. Equipment grounding for safety - grounding substation - grounding of line structure. Earthing Effect of electric and magnetic fields - Human safety aspects - effect of current and voltage on human beings - typical V-I characteristics of skin - Electric shocks and their prevention. Insulation - classes of insulation - FRLS insulation - continuity test.

UNIT IV	SAFETY DURING INSTALLATION, TESTING AND COMMISSIONING, OPERATION AND MAINTENANCE	9

Safety during installation of plant and equipment. Safe sequences in installation - risk during installation. Safety during testing and commissioning. Test on relays - protection and interlock systems for safety. Hazardous zones - classification of hazardous zones. Intrinsically safe and explosion proof electrical apparatus. Selection of equipments in hazardous area. Electrical fires - hazards of static electricity. Safe procedures for electrical maintenance - Statutory requirements. Safety provisions in Indian Electricity Act & Rules

UNIT V	ELECTRICITY AND FIRE SAFETY	9

power factor improvement – equipments – Importance of P.F. improvement – Disadvantages of low power factor – Causes of low P.F. –.Personal Protective equipments (PPE’s) used in connection with safe use of electricity like Hand Gloves, Rubber Shoes, Waist belt, , earthing rod, Goggles etc., Safe working clearances for different voltage levels, fire extinguishers used for different applications, knowledge of Static electricity, Lightning protection, Electrical Safety Audit, elementary knowledge of first aid.

TOTAL : 45 PERIODS

OUTCOMES: Students able to

CO 1 Explain Indian electricity rules and acts and their significance.
CO 2 Understand the need of electrical safety in different locations.
CO 3 Understand the need of electrical safety during installation of equipment’s.
CO 4 Explain the necessity of electrical safety in Hazardous zones.
CO 5 Understand electrical safety in distributed systems

TEXT BOOKS:

1. Rao, S. and Saluja, H.L., “Electrical Safety, Fire Safety Engineering and Safety Management”, Khanna Publishers, 1988.
2. PradeepChaturvedi, “Energy Management Policy, Planning and Utilization”, Concept Publishing Company, 1997.

REFERENCES:

1. Nagrath, I.J. and Kothari, D.P., “Power System Engineering”, Tata McGraw Hill, 1998.
2. Wadhwa, C.L., “Electric Power Systems”, New Age International, 2004.
3. J. Maxwell Adams. Electrical Safety A guide to the causes and prevention of electrical hazards, Published by The Institution of Engineering and Technology, London, United Kingdom, First published 1994 Reprinted 1997, 2004, 2009.
4. Fordham-Cooper, W. (1998). Electrical safety engineering. Elsevier by Amsterdam.Bill Atkinson & Roger Lovegrove & Gary Gundry(auth.)Electrical Installation Designs, Fourth Edition @ 2013, John Wiley & Sons, Ltd
5. Kothari, D.P. and Nagrath, I.J. (2009). Basic electrical engineering. (Third edition). Tata McGraw Hill Publishing Company Ltd., New Delhi