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Single Phase Transformer Library
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Single Phase Transformer Library
➣
Introduction
➣
Self Inductance
➣
Mutual Inductance
➣
Coefficient of Coupling or Magnetic Coupling Coefficient (k)
➣
Dot Convention and Equilibrium Equations
Sign Convention for KVL
Writing Equilibrium Equations fore Coupled Circuit
➣
Inductive Coupling in Series
Series Aiding
Series Opposing
➣
Inductive Coupling in Parallel
Parallel Aiding
Parallel Opposing
➣Energy in a Pair Coupled Coil
➣
Introduction to Transformer
➣
Principle of Working
Can D.C. Supply be Used for Transformer ?
➣
Construction
Types of Windings
➣
Construction of Single Phase Transformers
Core Type Transformer
Shell Type Transformer
Berry Type Transformer
➣
Comparison of Core and Shell Type Transformers
➣
E.M.F. Equation of a Transformer
➣
Ratios of a Transformer
Voltage Ratio
Concept of Ideal Transformer
Current Ratio
Volt-Ampere Rating
➣
Ideal Transformer on No Load
➣
Practical Transformer on No Load
➣
Transformer on Load (M.M.F. Balancing on Load)
➣
Effect of Winding Resistances
Equivalent Resistance
➣
Effect of leakage Reactances
Equivalent Leakage Reactance
➣
Equivalent Impedance
➣
Phasor Diagrams for Transformer on Load
Unity Power Factor load, cosΦ
_{2 }
= 1
Lagging Power Factor Load, cosΦ
_{}
_{2 }
Leading Power Factor load, cosΦ
_{2 }
➣
Equivalent Circuit of a Transformer
Approximate Equivalent Circuit
➣
Approximate Voltage Drop in a Transformer
➣
Voltage Regulation of Transformer
Expression for Voltage Regulation
Zero Voltage Regulation
Constants of a Transformer
➣
Losses in a Transformer
Core or Iron Losses
Copper Losses
➣
Efficiency of a Transformer
➣
Condition for Maximum Efficiency
Load Current at Maximum Efficiency
KVA supplied at Maximum Efficiency
➣
Effect of Power Factor on Efficiency
➣
Effect of Frequency and Supply Voltage on Iron Losses
➣
Design of Single Phase Transformer for Instrument Power Supply
➣
All Day Efficiency of a Transformer
➣
O.C. and S.C. Tests on Single Phase Transformer
Open Circuit Test (O.C. Test)
Short Circuit Test (S.C. Test)
Calculation of Efficiency from O.C. and S.C. Tests
Calculation of Regulation
➣
Polarity Test
➣
Sumpner's Test (Back to Back Test)
➣
Separation of Core Losses Tests
➣
Parallel Operation of Transformers
➣
Conditions for Satisfactory Parallel Operation
Explanation of Conditions
➣
Parallel Operation of Two Ideal Transformers
➣
Parallel Operation of Transformer With Equal Ratios
➣
Parallel Operation of Transformer With Unequal Voltage Ratios
➣
Methods of Cooling Transformer
➣
Tap Changing Transformer
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