Distribution Transformers

The Distribution transformers are used for distribution of electrical energy at end-user level. The operating voltages are around 33KV for industrial purposes and 440v-220v for domestic purposes. These are generally rated below 200MVA.

The large three phase auto transformers used in power distribution and the oil-cooled transformers also come under this category. The figure below shows an image of a distribution transformer.

These transformers are usually smaller in size compared to power transformers. These transformers are placed in open but are not fully loaded like power transformers.

Advantages

• They are small in size.
• They are easy to install.
• These transformers have low magnetic losses.

Disadvantages

• These transformers have low efficiency.
• They are not fully-loaded.

Applications

They are used for distributing electricity in various areas like houses, farm yards, lands, railways, wind farms etc.