Insulation in a Transformer


Insulation in a Transformer

The insulation is used to prevent the conductors shorting together in a transformer is usually a thin layer of varnish or enamel in air cooled transformers.
In larger power and distribution transformers the conductors are insulated from each other using oil impregnated paper or cloth. The whole core and windings is immersed and sealed in a protective tank containing transformer oil. The transformer oil acts as an insulator and also as a coolant.

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