Difference Between Power Transformer And Distribution Transformer

Hello guys, welcome back to my blog. In this article, I will discuss what is the power transformer, what is distribution transformer, the difference between the power transformer and distribution transformer. Each and everything I will try to explain in a simple way.

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Also read – Different Types Of Sensors Used In Automobile.

Nowadays, you will find a power transformer and distribution transformer in many places, even though they both are transformer there are lots of differences between them. The PT and DT plays a very important role in the transmission of electricity from generating stations to utilizers.

What Is Power Transformer

The transformer which will operate above 33KV such as 765KV, 400KV, 220KV,  132KV, 110KV, 66KV, 33KV is known as the power transformers. 

What Is Distribution Transformer

The transformer which operates below 33KV such as 11KV, 6.6KV, 3.3KV, 420V, 220V is known as Distribution Transformers.

Difference Between Power Transformer And Distribution Transformer

01. The power transformer is used to step-up or step-down the voltage, it is used for both purposes. Whereas the distribution transformer is only used to step-down the voltage.

02. The power transformer is used in both transmission and receiving stations whereas the distribution transformer is used only at the distribution and it is also called an end line transformer.

03. The load fluctuation is less in the case of the power transformer because the load is not directly connected to the PT. Whereas the load fluctuation is more in case of a DT because the load is directly connected.

04. In the PT, the copper loss and iron loss are fixed whereas in case of DT the iron loss is fixed and copper loss is variable because the copper loss depends on load, in distribution transformer load fluctuation is more so copper loss varies and the voltage is fixed so the iron loss is also fixed, the iron loss depends on voltage.

05. The PT is always operated at full load means 90% to 100% the transformer is loaded whereas the DT is always operated at a low load means 50% to 70% of the transformer is loaded.

06. The efficiency of the PT is high when it is operated at full load whereas the efficiency of the DT is high when it is operated at 50% to 70% of the load.

07. The flux density in the PT is very high whereas the flux density in the distribution transformer is low.

08. In the PT, the tap charger is not used whereas the DT the tap charger is used.

09. The size of the PT is very large whereas the size of the distribution transformer is small compared to a power transformer.

10. The cost of the PT is more whereas the cost of a distribution transformer is less.

11. The connection in a PT is in star to delta or delta to delta whereas the connection in DT is in the delta to star.

Guys, these are some differences between the power transformer and distribution transformer. I hope this article may help you all a lot.

Thank you for reading.