Transformer

• • Introduction to transformer
• • Functions of transformers
• • Transformer Construction
• • Tank, Core, Coils, Types and Ratings
• • Bushings, Tap Changers
• • Factory Testing
• • Dry, Oil and Liquid Filled Types

• • Operation
•  → Theory of Operation, Vector and Connection Diagrams
•  → Important Electrical Relationships & Formulas

• • Auxiliary Equipment
•  → Gas Relays, Fans and Pumps
•  → Gauges, Tap Changer Controls

• • Failure Causes
•  → Detailed analysis of several case histories
•  → Lightening
•  → Oil Decay
•  → Component Failures
•  → Internal Faults
•  → External Faults

• • Erection and Commissioning guidelines

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