A transformer is a passive electrical device that transfers electrical energy from one electrical circuit to one or more circuits. A varying current in any one coil of the transformer produces a varying magnetic flux, which, in turn, induces a varying electromotive force across any other coils wound around the same core.


Transformer Basics

Transformer Working Principle

Why Transformers are Rated in kVA
Transformer on DC Supply
Voltage and Frequency Effects

Types of Transformer

Power and Distribution Transformers
Core Type and Shell Type Transformer
Losses in a Transformer
Voltage and Frequency Effects

Rectifier Transformer


Three Phase Transformer

Three Phase Transformer Connection
Parallel Operation of 1 Phase Transformer
CT – Windings and Insulation Level
Transformer Bushings
Current Transformers
Types of Current Transformers

Transformer Oil

Transformer Oil Tests
Transformer Oil Filtration
Condition Monitoring of Transformers

Transformer Testing

Testing of Transformers
Power Transformers – Testing Methods
Transformer Efficiency
Power and Distribution Transformers
Methods of Cooling


Electrical Engineer
June 9, 2014

Condition Monitoring for Transformers

Electrical Engineer
August 16, 2018

Practical Transformer on No Load

Electrical Engineer
December 17, 2015

Corona Effect in Power System

Electrical Engineer
July 30, 2015

Why Transformer does not work on DC supply?

Properties of Good Transformer Oil

Even though the basic functions of the oil used in transformers are heat conduction and electrical insulation, there are many other properties which make a particular oil eminently suitable. Properties of good transformer

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