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Classification of Transformer
According to Core type
- Core Type
- Shell Type
- Berry Type
According to the purpose for which used
- Distribution Transformer
- Power Transformer
- Generators formers ( Current Transformer & Potential Transformer )
According to method of cooling
- Self cooled
- Air force cooled
- Oil self cooled
- Forcely oil cooled with air or water
According to frequency groups
- Power frequency transformers (50 Hz)
- Audio frequency transformers (20 Hz to 50 KHz)
- Radio frequency transformers (above 20KHz)
According to specific applications
- Rectifier transformer
- Regulating transformer
- Welding transformer
- Traction transformer
Single Phase Transformer
Construction & Principle of working of 1 Phase Transformer
Ideal Transformer
Practical Transformer
EMF Equation of Transformer
EMF Equation and Voltage, Current Relationships
Specifications of Transformer
Ideal Transformer on No-Load
Losses of Transformer
Load test on a Transformer
Leakages flux in a Transformer
Efficiency of Transformer
Condition for maximum efficiency
All-day efficiency
Losses In Transformer
Open circuit and Short circuit test on transformer
Voltage regulation and efficiency of a Transformer
Parallel operation of two single phase transformer
Three Phase Transformer
Construction & Principle of working of 3 Phase Transformer
Three Phase transformation
- Primary in delta : Secondary in delta
- Primary in star : Secondary in star
- Primary in delta : Secondary in star
- Primary in star : Secondary in delta
Three phase transformer connections
Three phase transformer v/s bank of three single phase transformer
Phasor diagrams on No-Load & Load at different p.f. Equivalent circuit diagrams of transformer
Three phase transformers : Construction
Distribution Transformer
Power Transformation
Comparison of distribution and power transformer
Scott connection : 3 phase to 2 phase conversion
Autotransformers
Instrument transformers
Special Purpose Transformers
Auto-transformer works on the principle of self induction
Comparison of two winding transformer and auto transformer
Cast resin Transformer
Toroidal Transformer
Amorphous core transformer
Welding transformer
Tests on Transformer
Polarity test
Direct loading test
O.C./S.C. test
Sumpner’s test
Parallel operations of transformer
Comparison of 3 Phases & 3 Single-Phase transformers
Routine & Type tests for Transformers as per IS(6600-1972)
Phasor group
Protection devices for safe operation of a Transformer
Conservator
Breather
Temperature guage
Explosion vent
Pipes
Buchholz Relay
Cooling of Transformers
Scott connection of transformer winding
Transformer Tapping
Necessity of providing tappings for transformer
Types of Tap changers
On-Load & Off-Load Tap changers
Design of 3 phase Distribution Transformer
Coming soon…
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