Everything You Need to Know About Dry Transformers and Its Factors


Transformers are essential for maintaining and regulating the voltage in electrical appliances. They automatically increase or decrease the voltage based on the energy requirement of electronic equipment. There are transformers for both residential and commercial usage. While transformers come in different shapes and sizes, dry type transformers are one of the most popular ones.

Dry type transformers manufacturers generally have high demand from commercial, industrial, and the utility sector. These industries heavily utilize a dry type transformer to regulate the voltage fluctuations. Since they have heavy machinery and equipment, they require a transformer that can handle the massive energy load. But why dry type transformers?

In this article, we will look at what dry transformers are. We will highlight why they are heavily used in industries and their factors. Because they are cheap and efficient, they become the perfect choice for commercial purposes. Let’s have a look at these transformers in detail.

What is a dry type transformer?

A dry transformer does not contain any insulating liquid. It is a stationary solid device that works on its own without any winding core immersed in liquid. These windings are kept in a sealed tank that are pressurized in air. Being very environment-friendly, dry type transformers use high-temperature insulation systems for operations.

They provide consistent power without the need for any fire-resistant vaults. Therefore, they are highly used in buildings where fire safety is a must like chemical industries, schools, hospitals, factories, and many more. Dry transformers have a ventilated case, allowing free flow of air. This keeps the entire transformer air-cooled, reducing any chance of overheating or causing any fire damage.

Types of dry transformers

Dry type transformers manufacturers build two types of dry transformers. They are –

1. Cast Resin Transformer

The primary and secondary windings of cast resin transformers are insulated with epoxy resin. It makes them the perfect companion in areas with high moisture. They have a much better load capacity than other transformers. The best thing is that they do not lead to any short circuits as they can easily bear heavy power loads. On top of that, they can easily be fitted outdoors without any fear of catching fire or leading to damage during the monsoon.

2. Vacuum Pressure Impregnated Transformer

The windings of vacuum pressure impregnated transformers are made in foil or strip. When it needs to be operated in higher voltages, the windings are made in disks so that it easily regulates the voltage of the electrical appliances. The transformer works perfectly well in moisture prone areas. It has IP56 protection.

Why use dry type transformers?

Dry transformers are extremely energy efficient. They do not require any heavy power sources for operations. They are easy to maintain and do not cause much trouble while operating. Since it does not require any liquid any operation, the dry type transformer works safely and with minimum flammability. Here’s why industries and commercial places use dry transformers –

  • They do not emit any harmful gas and are a pollution-free solution for maintaining the voltage. It makes them extremely environment-friendly.
  • Since they do not have any liquid, they are not flammable. It makes them completely safe to be installed in places where a large number of people are working.
  • They can easily support any voltage overload. It makes dry type transformers perfectly suitable to be connected with heavy machinery and equipment to regulate their voltage.
  • Because they have reduced thermal and dielectric heating, they run longer than other transformers. It offers simple maintenance because there’s not much damage due to overheating.

Dry type transformers are easily one of the best transformers for use with electrical appliances and equipment. They are used in a wide variety of industries, including gasoline, chemical, oil and many more.