GTU Study
KHUDKIBOOK
MAINTENANCE OF TRANSFORMER
FREE PDF
3360907
Code: 3360907
Credits: 5
Semester 6
EC
Maintenance Of Transformer And Circuit Breaker
Get the full GTU study material, English & Gujarati textbook PDFs, syllabus curriculum, and solved previous year question papers.
×
English Book & Chapters
English Book Coming Soon
We are working hard to add this material. Stay tuned for updates!
Follow on Instagram for Updates
×
GTU Previous Year Papers
Maintenance Of Transformer And Circuit Breaker Syllabus — Unit-wise Content
The official GTU curriculum for Maintenance Of Transformer And Circuit Breaker (subject code 3360907) as prescribed for EC · Semester 6 divides the course into 3 units, covering 42 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 (3360907)Unit 1 Maintenance of Transformers
- 2.1. Significance of transformer maintenance
- 2.2. Parts of transformer- tank. Core, winding, conservator, radiators, bushings, terminals, temperature measurement system, safety valves, tap changers and accessories/ fittings etc.
- 2.3. Factors affecting the life of transformer-moisture, water oxygen, solid impurities, varnish, slackness of windings and dust.
- 2.4. Inspection-sensory, records and electrical test.
- 2.5. General/Typical maintenance schedule of power transformers-up to 1000 kVA and above 1000 kVA
- 2.6. Maintenance of transformer oil- characteristic, interpretation of tests, procedure of testing BDV, filtering plant. Maintenance of Transformer and Circuit Breaker Course Code:3360907 GTU/ NITTTR Bhopal/14-15 Gujarat State Unit Major Learning Outcomes (in cognitive domain) Topics and Sub-topics gas collected in Buchholz relay, condition of transformer may be ascertained.
- 2.7. Causes of failures of power transformers and preventive actions.
- 2.8. Detective devices-Buchholz relay, Pressure relief device, Differential relay, Dial thermometer alarm contact, Over current relay, ground fault relay, voltmeter, ammeter, Human senses
- 2.9. Check list of maintenance of power transformers
- 2.10. Causes and methods to reduce Audible Noise (AN) from transformer
- 2.11. Maintenance of distribution transformer i. Reasons for failure of Distribution Transformers and the remedial measures thereof ii. Inspection & Maintenance Schedule for Distribution Transformers: iii. Inspection & Maintenance of transformer and accessories within the sub-station and its proximity.
- 2.12. Procedure of measuring the insulation resistance of transformer windings.
Unit 2 Commissioning and Recharging of Transformers
- 3.1. Concept of commissioning and recharging of transformer.
- 3.2. General checks
- 3.3. Insulation resistance test
- 3.4. Measurement of oil characteristics
- 3.5. Off circuit tap switch
- 3.6. Continuity test
- 3.7. Measurement of winding resistance
- 3.8. Voltage ratio tests
- 3.9. Magnetizing current
- 3.10. Charging of the transformer
- 3.11. Do’s and Don’ts for transformer
- 3.12. Various commissioning tests on a power transformers Maintenance of Transformer and Circuit Breaker Course Code:3360907 GTU/ NITTTR Bhopal/14-15 Gujarat State Unit Major Learning Outcomes (in cognitive domain) Topics and Sub-topics
- 3.13. Procedure of loading the transformers.
- 3.14. Transformer grounding. Maintenance of Transformer and Circuit Breaker Course Code:3360907 GTU/ NITTTR Bhopal/14-15 Gujarat State Unit Major Learning Outcomes (in cognitive domain) Topics and Sub-topics
Unit 3 Maintenance of Circuit Breaker
- 4.1. Steps in maintenance of CB
- 4.2. Maintenance of moulded case circuit breakers -Frequency and routine maintenance tests
- 4.3. Maintenance of low-voltage circuit breakers -Frequency and maintenance procedures
- 4.4. Maintenance of medium- voltage circuit breakers – Air, Oil and Vacuum circuit breakers - Frequency of maintenance, safety practices and maintenance procedures for each of the above
- 4.5. Maintenance of high-voltage circuit breakers - frequency of inspections, External and internal inspection guidelines, typical internal breaker problems, Influence of duty imposed, Types of tests performed.
- 4.6. OIL CB, Post fault maintenance, Steps in maintenance of MOCB
- 4.7. Maintenance for AIR CB and Frequency of maintenance.
- 4.8. Maintenance of AIR BLAST CB
- 4.9. Maintenance of SF6 gas circuit breakers i. Properties of SF6 (sulphur hexafluoride) gas ii. Handling non faulted SF6 iii. Handling faulted SF6 iv. Procedure of filling SF6 gas in single pressure puffer type SF6 CB v. Gas monitoring system and gas handling system for SF6 filled equipment vi. Types and function of SF6 gas handling units. vii. Maintenance of SF6 CB
- 4.10. Maintenance of VACCUM CB
- 4.11. Life of arcing contacts in various CB in case of normal Maintenance of Transformer and Circuit Breaker Course Code:3360907 GTU/ NITTTR Bhopal/14-15 Gujarat State Unit Major Learning Outcomes (in cognitive domain) Topics and Sub-topics current switching and short circuit operation
- 4.12. Causes of failure of CB, trouble shooting and procedure of failure analysis.
- 4.13. Typical Record card for maintenance work of CB
- 4.14. Commissioning tests on HV A.C. CB
- 4.15. Operating mechanism used in HV A.C. CB
- 4.16. Safety precautions to be taken in maintenance of CB
Study on Android App:
