Power Transformer vs Distribution Transformer

Power transformers and distribution transformers are most commonly used in power settings to step the voltage up or down. This variation in electric current is required for various purposes, some of which are transmission and distribution. This blog sheds light on the basics of transformers and the defining differences between a power transformer and a distribution transformer.

Overview of a Transformer?

A transformer can be described as an electrical machine used to change the voltage of current in any circuit. It does so without causing any disruption in the frequency of the supply. This static electric equipment operates on the working principle of electromagnetic induction.

Transformers are classified into various categories based on design, operation, purpose, etc. Some of the most well-known types of a transformer are; distribution transformers and power transformers.

What Is a Distribution Transformer?

Distribution transformer is usually found in power systems near the loading points, and their main function is to step down the high-voltage power to safe rated, useable levels. In other words, a distribution transformer can be described as a step-down transformer that steps down the voltage and the voltage supply to the required voltage levels. In application, distribution transformers have voltage specifications of 11 kV, 6.6 kV, 3.3 kV, 440 V and 110 V. Distribution transformers are designed to be as efficient as possible at 60% to 70% load.

A Look at Power Transformers?

Power transformers can be described as transformers having extremely high MVA ratings. Power transformers transmit high electric power at high voltage levels to various distribution centres. These are installed at various power stations to either step down or increase the voltage intensity per the requirement. These types of transformers are crucial for the production and transmission of power. A power transformer is typically rated above 200 MVA and has voltage ratings of 33 kV, 132 kV, 220 kV, 440 kV etc. Power transformers are mostly used to convert low voltage levels (at the generating end) to high voltage levels for transmission. The power transformers are designed to be as efficient as possible at or near full load.

Comparing Power Transformer and Distribution Transformer:

The working principle of both transformers is the same. They both operate on the electromagnetic induction working principle. But when it comes to their design, function, applications, and winding configurations, they are quite different from each other.

For further clarification, refer to the table below, which lays out the main differences between a power transformer and a distribution transformer.

Get the Best Grade Quality Transformers

While power transformers are intended to step up or down voltage levels for transmission, distribution transformers are specifically designed to offer stepped-down voltages to safe and useable levels. There are numerous distribution transformers on the market, each with advantages and specialisation. If you’re seeking a high-quality power transformer to fit your specific needs, we recommend contacting a reliable service provider. These high-quality service providers have years of industry experience and know how to design and produce top-of-the-line transformers that exceed your expectations.