This is the reason it is used as an insulator within the transformer. Evaporation losses will be reduced due to thermal stability and high flash point. The most important role played by the Transformer Oil is to protect the interaction of atmospheric oxygen and the cellulose made paper insulation of the winding. The corrosion of paraffin-based crudes generates an unsolvable sludge to increase the viscosity. 4)   Long life performance and excellent ageing characteristics, even under severe electrical stress. There are also transformers operating without oil. An Insulating Oil must have the following properties: 1)   Excellent dielectric properties resulting in minimum power loss. The oil used in the transformer is a key element to check the physical condition of the unit. This helps to save money on purchase of fresh oil and waste oil management, reduces storage space needed for storage of waste oil, as well as increases the reliability of power transformers. The following factors need to test while doing a test. Moisture content in Transformer Oil is highly undesirable as it affects the dielectric properties of oil. GlobeCore offers high-performance transformer oil treatment plants, operating both on the basis of well known approaches to insulating liquid treatment, as well as the innovations of our design department. These cookies will be stored in your browser only with your consent. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The boiling point of this kind of oil about 530 °C. So it will reduce the capacity of heat transfer, service life, and overheating. Outstanding aging characteristics even in severe conditions. One is BDV Test i.e. The products of oxidation are soluble within the oil. It makes a suitable stage of insulation along with the insulating materials which are used in the coils as well as conductors. Paper absorbs maximum amount of water from oil which affects paper insulation property as well as reduced its life. 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At site, two types of tests are conducted. Insulating Oil when used in a Transformer is popularly known as Transformer Oil. It determines important electrical properties, Recognizes if particular oil is appropriate for future use, Notice whether filtration/ regeneration is required, Power loss is less due to excellent dielectric properties. The oxidation of paraffin-based crudes produces an insoluble sludge, which increases the viscosity. Mineral oils are suitable from the point of electrical properties but tend to form sludge. -Working & Types of UPS Explained. Naphthenic Oils are more readily oxidized than Paraffinic Oils. We know that there are different kinds of materials available which have dissimilar dielectric strength. The mineral insulating oil is derived from particular crudes which include extremely low n-paraffin known as wax. It includes high dielectric strength to resist with a high voltage. These cookies do not store any personal information. There are two types of transformer oil that include the following. 1) Physical Properties – Types of physical properties of Transformer Oil. Thus we observe that Transformer Oil has great importance and it does not only acts as a cooling medium rather it does many other things to keep Transformer healthy. Normally the BDV value for Transformer oil shall be more than 70 kV/cm and moisture content shall be less than 10 ppm. But opting out of some of these cookies may have an effect on your browsing experience. Mineral insulating oil derived from special crudes contains a substantial amount of n-paraffin i.e. Early testing will set up a bottom line for contrast & yearly testing will design any changes inside the transformer. The oil used in the transformer works like a cooling agent & an insulator. Transformer Oil is basically an Insulating Oil. Definition: The transformer oil can be defined as a special kind of oil that has outstanding electrical insulating properties. Thank you so much, friends sharing this information. There are two types of Transformer Oil, Naphthenic and Paraffinic based Transformer Oils. Organic oils of vegetative or animal origin are good insulators but tend to decompose giving rise to acidic by-products which attack the paper or cloth insulation around the conductors. Wider operating temperature range, resulting from higher flash and lower pour point. Excellent dielectric properties resulting in minimum power loss. In the case of light pollution, mechanical methods of cleaning are used. Transformer oil properties can be divided into several groups. It is mandatory to procure user consent prior to running these cookies on your website. Use special substances that prevent oxidation, for example, ionol. It works as an insulator. The designing of transformer coils can be done with copper that carries high current so that these coils will become hot.