Construction details of autotransformer

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Auto Transformer Construction

A transformer basically consists of two parts

  • Conductors
  • Core

The conductors in the autotransformer are made up of copper.

 They are of low resistance. The copper conductors are insulated with each other

. The material used for insulation is impregnated paper, mica, etc. 

The insulation also helps in reducing eddy current losses.

 The winding is wound around the core. For a single winding transformer, the requirement of copper is less as compared to two winding transformers.

Auto-Transformer-Construction

auto-transformer-construction

To transfer flux from primary to the secondary, core is used.

 The core is made up of magnetic material like silicon steel, CRGO steel, etc. 

CRGO steel is the most efficient material for core, as it has the least hysteresis losses. The role core is to transfer flux from one part of winding to other parts.

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