Distribution Transformer

Definition - What does Distribution Transformer mean?

A Distribution Transformer is a step down transformer primarily used for electric power distribution. The step down electric power is then used for industrial and individual purposes. The transformer is usually small in size and filled with insulating oil. There are multiple types of distribution transformers used such as:

  • Single phase transformer
  • Multi phase transformer
  • Pad mounted transformer
  • Pole mounted transformer
  • Underground transformer

Petropedia explains Distribution Transformer

These types of transformers are made from laminated sheet of steel stacked and glued together with resin and steel straps. The primary coils of these transformers are made of copper or aluminum. The windings of a distribution transformer are insulated with resin impregnated paper. The entire assembly is baked and submerged in the powder-coated tank filled with transfer oil that cools the windings, insulates it and protects from moisture. Any further moisture if exists, can be removed by depressurizing the tank and sealing it against the weather with the gasket.

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