Dry Type Transformer Manufacturers

Due to the versatility and benefits dry type transformers offer, more and more commercials are considering using it over traditional oil type transformers, which is why choosing the right dry type transformer is just as important as selecting the right Dry Type Distribution Transformer manufacturers.


This is to prevent any unwanted dangers or hazards that cheap and poorly-made dry-type manufacturers bring.

In this article, you will learn how to find the right dry-type transformer manufacturers with the professional help of DAELIM.

10KV Class Three Phase Epoxy-resin Dry-type Transformer

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20KV Class Three Phase Epoxy-resin Dry-type Transformer

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35KV Class Three Phase Epoxy-resin Dry-type Transformer

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The Importance of Dry Type Transformer Manufacturers: The Ultimate FAQ Guide

This is simply more than “without them, there would be no transformers”. Dry-type transformer manufacturers are highly skilled in what they create and they are responsible for the high-tech design of dry-type transformers.


Aside from that, dry-type transformer manufacturers prioritize your safety. Transformers are known to be extremely dangerous if not properly operated, which is why dry-type transformer manufacturers not only provide you with high-quality dry-type transformers but also give you advice and other important information.


For you to be well-informed about the characteristics of dry-type transformers, DAELIM created this extensive article about this type of transformer.


And to start, here are the fundamentals.

What are Dry Type Transformers?

Dry Type Transformer Manufacturers
Dry Type Transformer Manufacturers

Dry-type transformers are transformers that do not depend on any insulating liquid. Unlike other oil-type transformers. Its core and windings are sealed in a tank with pressurized or forced air inside.

Mechanical Properties


The mechanical properties below are what you commonly hear from others, each part has its own role and is essential for the transformer to work.

So, it is important for you to learn what each part does so that you will not have a difficult time identifying a specific part when it needs to be fixed or replaced.




The windings in dry-type transformers are often made up of copper or aluminum with a coating of thin insulation that contains higher temperature class and insulation class. This is to give extra durability and longevity.

Static Device


A static device is a device that converts one form of energy to another without physical movement. For dry-type transformers, there are no moving parts in it since it is a static device.


This element is one of the contributors to its low maintenance, which a lot of consumers are interested in.


Laminated Core


Dry-type transformers contain a rectangular-shaped soft magnetic laminated core, which is designed to carry both large input and output power transmission.



The conservator in dry-type transformers stores additional cooling oil that can be used or recycled after a short period of time. This means that even though dry-type transformers do not require oil, they can still be added with liquid insulators.


But since the cooling medium of dry-type transformers is air, pressurized air, or forced air only. There is no liquid insulation required.




Breathers absorb moisture content from the air which sucks in while the oil gets expanded or contracted. Since there is no oil in dry-type transformers, the air as its cooling medium is already enough to cool the transformer.

Electronic Relay


The electronic relay or also known as the Buchholz relay is responsible for securing the windings by protecting the windings from overheating.


Overheating has a great possibility of destroying the transformer and even set it up in flames or explosion.


Cooling Medium


When it comes to the cooling medium, dry-type transformers only require air, which is why their maintenance cost is much less than oil-type transformers. Oil is expensive, specifically mineral oil, but it does have its own pros and cons.

Different Types of Transformers

It is best to know the various types of transformers before you purchase one because the wrong type of transformer can even be more dangerous than a poorly-made one.

With that said, here are the different types of transformers.

Spiral Core Transformer

The spiral core transformer employs the latest development in core construction. In fact, its core is assembled in a continuous strip in the form of a cylinder.


Its components consist of the following: its core has three limbs and two windows. Both windings are contracted on the central limb specifically, one over the other.

Shell Type Transformer

For the components of the shell-type transformer, its core has three limbs and two windows. Both windings are contracted on the central limb specifically, one over the other.


They are commonly used for low voltage applications and in low voltage power circuits including electrical circuits.


The arrangements of these windings can also be done with one limb.

Core Type Transformer

Core type transformers are usually used as energy transformation, transfer cores, and power grids.


It still serves its main function when it comes to electrical transformer applications, which is to step up transmission and step down transmission.


For its components, the core type transformer has two limbs, and the windings are contracted on two limbs of the core material.

Dry Type Transformer Maintenance

Dry-type transformer manufacturers designed dry type transformers in a way that requires little to almost no maintenance at all. This is one of the many reasons why commercials love dry type transformers.


But even so, it is important to check once in a while for these few maintenances:


Never do maintenance on your transformer while it is on or when it has energy flowing in it. This can pose danger to you and your surroundings especially if you have flammables or chemicals nearby,


Check for Dust

Accumulation of dust can be a problem if it becomes a pile or in many amounts. Dust can pollute the air inside the tank and it can disrupt the core and windings of the transformer.


So, if your dry-type transformer is in an area that is exposed to dust, then do consider regularly checking or cleaning it every once in a while.


To avoid directly touching the parts, you may use a vacuum or compressed air to do so.

Proper Ventilation

Since the cooling medium of dry-type transformers is air, there should be sufficient exposure to air in where your transformer is placed. This is to prevent it from overheating since air is very important for it to cool down.


You can also use forced air or pressured air into the transformer to give it time to cool down.

Sound Disruptions

Dry-type transformers are known to be loud, so it cannot be avoided that you hear it every time you pass by, to which you will grow accustomed. This gives you the opportunity to listen to its sound characteristics.

You will be able to tell the difference between a healthy sound against a scrappy one. So, if there is an unusual sound, it is highly recommended that you check it or call for professional help.

Clean Cooling Fans

Cooling fans easily collect dust, which is why rubbing it off or cleaning it every now and then is a great way to keep your fans clean and the insides of your transformers too.


You have the option to wipe it or better yet, use a vacuum or compressed air to effectively remove dust from your fans.

Tighten Any Loose Hardware

Although a dry transformer is a static machine, there might be pieces of hardware both inside and outside the transformer that are loose, which is why you should look out for that as well.

Replace Filters

The filters protect the inner components of the transformer, however, it is prone to be filled up with dust every now and then which is why replacing filters is also essential in maintaining a dry-type transformer’s health condition.


This is to prevent clog and the restriction of airflow that will disrupt the circulation inside the transformer.

Look for any signs of Discoloration

The discoloration is a sign of an occurring electrical problem that will grow worse overtime if not treated immediately. Electrical problems can be complicated, and if you are not certain what the problem is, then do not hesitate to call for professional help.

How to look for the Best Transformer Manufacturer?

Dry-type transformer manufacturers are difficult to find, especially if you are not well-knowledgeable about the field of transformers.


This is why we listed you factors that you should consider for choosing the best manufacturer,

Experience in the Industry


If the manufacturer of the dry transformer you are interested in has years or even decades of experience in the industry, then that is a brilliant starting element.


However, this should not be your only basis as there are still many more factors to consider as well.


Years of experience is a good start, and excellence is its reputation’s last name.

Customer Reviews

If you are able to see their customer reviews, then that’s great! Because this promotes transparency and a better reputation.


Seeing satisfied

customers will make you want to be a part of them, and this will help you secure your choice as well.


DAELIM offers countless services for your convenience.


Manufacturers understand that purchasing transformers is no easy decision, which is why services to help and guide you as a consumer is very important.


Quality should be a prime factor as well because you are dealing with electricity here. A poorly-made transformer will only do more harm than good. Dry-type transformer manufacturers that have quality control are what you should prefer.


This is to keep you and your surroundings safe from low-quality dry transformers that carry danger with them.


Price should be a great determiner for you as well because there are a lot of overpriced dry transformers available in the market out there,


Their quality might be good, but spending too much money is just unnecessary.

The best dry type transformer manufacturers give their customers a fair quote.

Dry Type Transformers vs Oil Type Transformers?

Oil type transformers back then were widely used, but when dry-type transformers were invented, consumers were starting to shift to them.


But why?


Each transformer has its pros and cons and it serves different aspects as well.


Depending on your personal preference, below are the advantages and disadvantages of both transformers.

Dry Type Transformer Advantages

Dry-type transformers do well in high moisture areas because of their build design. They are very easy to maintain as well compared to oil-type transformers. A lot of consumers are also considering it because of its environmentally-friendly characteristic which is its less-flammable build.


Here are other benefits from dry type transformers:

Low Cost Installation

DAELIM offers low-cost installation to their dry-type distribution transformers for your convenience. It is known that installation costs for oil type transformers can be more expensive but you can contact DAELIM for a better offer.

No Oil Usage

As you know by now, there is no oil in dry type distribution transformers, this is because its cooling medium is using only pressurized air or forced air.


There is without a doubt that dry-type distributions transformers are durable. In fact, they are very adaptable to certain environments that oil-type transformers cannot withstand.


Oil Type Transformer Advantages

Oil type transformers do have a higher standard energy efficiency which gives them longer longevity than dry-type transformers. Oil transformers are also known to be less noisy compared to the metal-clanking noise from dry-type transformers its steel components produce.


However, since oil is required for its cooling, oil-type transformers will cost you more since mineral oil can be expensive, depending on where you purchase it.


Not only that, its maintenance is high as well. There is a lot you should regularly check and clean on oil-type transformers compared to dry-type ones.


1000KVA Dry Type Distribution Transformer
1000KVA Dry Type Distribution Transformer


In conclusion, good dry type transformer manufacturers give you all the best for your convenience. Not only from their top-tier products but also from services, communication, accommodation, tand fair quotes.


The right manufacturer will also continue to give their services and professional advice even if the transaction of your purchase is done. This is because the best manufacturers prioritize good customer relationships over just selling good-quality products.

DAELIM: An Electric Product & Equipment Manufacturer.