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4 Things You Need to Know About Transformer Oil

What is Transformer Oil?

Transformer oils are common oils that are broadly used in our daily lives. Transformer Oil is widely used in the field of construction engineering. It is one of the indispensable pieces of equipment in the engineering of transmission and distribution of electrical systems.


Transformer Oil

is also known as insulating oil as it is a special type of oil that has excellent electrical insulating properties. It is one of the dielectric oil or we can say that it is a crucial device that can change the levels of the voltage, it can also reduce the electrical energy loss during transmission.

It also ensures safe power consumption. The operating conditions of the power transformers are simple and you know that you can place the fully sealed oil in the open air.

Types of  Transformer Insulating Oil

Like some other types of oil, such as motor oil, insulating oil’s purpose can be found in its name. This type of oil is designed for use in power transformers, which play a critical role in the energy grid. It is also called insulating oil for this reason.

What Does It Do?

Transformer insulating oil is one of the important components of the insulating system as an electrical transformer needs suitable insulation. Each transformer has its system of insulation and it comes with a combination of solid and fluid insulating components. Let’s have a look at the Types of Transformer Insulation 

  1. Fluid and Liquid Insulation 
  2. Gas System 
  3. Solid Insulation 

There are basic Insulating oil types that can be present in both parts of the insulating complex or they can be the main component of it. 

The basic Insulating oil types are as follows-  

  • Mineral Oil 
  • Paraffinic Oil 
  • Silicone Oil 

Unlike other oils, transformer insulating oil is not designed to reduce friction. However, it is designed to help reduce temperature – motor oil does this to an extent, as well. With that being said, this oil also has a second, even more important, task. That is, it is designed to insulate it. Because of this, the oil differs greatly from other types of lubricants in terms of properties. In order to be used within a transformer, an oil must:

• Have a high dielectric strength
• Have high thermal conductivity
• Have high chemical stability
• Must be able to maintain all characteristics at very high temperatures and for long periods of time

This oil is used to preserve the windings and core within a power transformer. Without this oil, transformers would quickly overheat and suffer damage from corona discharge, arcing, and more.

Types of Transformer Oil

Most oils are mineral oil based. The two most common options on the market are paraffin-based oil and naphtha-based oil. Of these, naphtha oil oxidizes more easily, but the sludge produced during oxidation is more soluble than what is produced within paraffin-based oil. This means that the sludge does not collect at the bottom of the transformer where it would eventually obstruct convection circulation within the oil.

Paraffin-based oil does not offer the same benefit and sludge can more easily collect at the bottom of the transformer. It also has a high pour point, which can be an issue in colder climates.

Other Applications

Transformer insulating oil is primarily used in the world of power generation. However, it does have uses in other situations. It can be used in any situation in which insulation is necessary within an electrical component, and is well-suited to very high-voltage applications. For example, high-voltage switches and capacitors, as well as some types of circuit breakers can benefit from the cooling and insulating properties of this oil.

Regular Testing:

Finally, because transformer oil is a safety precaution, it must be tested regularly and replaced when its properties have been altered. On-site inspections should be conducted twice per year, and samples should be tested for dissolved gasses annually. If a transformer has been in operation for five years, this oil should be subject to Furan testing every two years.

    Closing Words

    Do reach out to us for the best transformer oil and we make sure that you get the high-quality oil too at reasonable prices. You can always trust us for power transformer oil as we are here to serve you not only with high quality but also improved services. So, don’t delay and do reach out to us without giving a second thought to your decision. We have a special arrangement for branded transformer oil. So, give us a chance to serve you and we will make sure that you are not disappointed by our services.

    +971 52 977 6000