Week 13. Familiarization with construction and operation of Distribution transformer.

Theory:

Definition of Transformer:

Electrical Power Transformer is a static device which transforms electrical energy from one circuit to another without any direct electrical connection and with the help of mutual induction between two windings. It transforms power from one circuit to another without changing its frequency but may be in different voltage level.

A transformer is an electrical device that transfers energy from one circuit to another purely by magnetic coupling. Relative motion of the parts of the transformer is not required for transfer of energy. Transformers are often used to convert between high and low voltages, to change impedance, and to provide electrical isolation between circuits.

Working Principle of Transformer:

The working principle of transformer is very simple. It depends upon Faraday's law of electromagnetic induction. Actually mutual induction between two or more winding is responsible for transformation action in an electrical transformer.

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