Introduction As one of the most important insulating medium, transformer oil undertakes as insulation, cooling, extinguish- ing arc and information carrier in high voltage electrical equipment, especially in the power transformer. Transformer oil can be similar to a window of a house. Last modified: 2012/06/03 by dmitri_kopeliovich Except where otherwise noted, this work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License has two main purposes. (adsbygoogle = window.adsbygoogle || []).push({}); var _wau = _wau || []; _wau.push(["dynamic", "12vbhgb58f", "wb2", "ffffffc4302b", "big"]); Electrical Transformers with Theory of Transformers, Transformer Oil or Insulating Oil and its Characters, Third Harmonic Currents - Concept of Third Harmonics, Characteristics of DC Shunt Generator (Self Excited), Independent and Dependent Current and Voltage Sources, Freewheeling Diode and its Working Principle, Accessories of Overhead Transmission Line. Since the formation of different gases due to the deformation of the molecular structure of the transformer oil is quite small. Typical additives include antioxidants (inhibitors), metal passivators and pour point depressants. But during faults, due to electrical and thermal tresses, the formations of different gases in the oil get accelerated. In the absence of oxidation stability, metal corrosion will minimize the life of the transformer. There are some different types of transformer insulating oil available in the market. The transformer core is made of cold-rolled grain-oriented steel or in short CRGO. The base mineral oil and the inhibited transformer oils also contained a suite of steranes, similar in distribution to those in the starting crude oil. They have been . COMPOSITION. Transformer oil consists of base oil plus, in some cases, additives (Figure 1). Transformer oil is the mineral hydrocarbon oil obtained from raw petroleum. Naphtha oil gets more oxidized than Paraffin oil. 2015, 16 12874 considered as functional food and used as an important part of a healthy diet. Three of four of the samples analyzed contain n-alkanes, alkyl-cyclohexanes and bicyclanes, but no iso-alkanes, steranes or PAH. There was no oil used in the earlier Transformers. The sludge of Paraffin oil does not precipitate at the bottom of the oil tank and disturb the transformer cooling system. That is the same for oil. While it may be extremely difficult to physically see inside of a metal tank, we can still analyze the oil and paint the picture of the inside. It is used in oil-filled transformers, some types of high voltage capacitors, lamp ballasts, and some types of … It is obvious that the Buchholz relay actuates only after a sufficient formation of gases in the transformer oil. Description. This oil is used to protect the transformer core section and also the windings where the windings are completely submerged in the oil. Meeting Standard: GB2536-2011. Color: transparent Liquid. Packing: 170kg/drum. Paper is highly hygroscopic. Your email address will not be published. IFT is the surface tension of a sample … Save my name, email, and website in this browser for the next time I comment. Composition of Transformer Oil. Other name: insulating oil. In scientific terms, transformer oil is a product of crude oil refining. Sci. J. Mol. In India, transformer oil is tested on the basis of IS 335. Advice on general occupational hygiene Do not eat, drink or smoke when using this product. The transformer oil is a combination of mineral oils. It is of two types: Paraffin-based transformer oil and Naphtha-based transformer oil. Basically, Transformer oil is needed for performing a couple of important functions. In the year of 1892, the General Electric Company first used insulating oil like Pennsylvania Paraffinic in the Transformer for the purpose. 2) High resistivity leading to better insulation values between windings. Hydrocarbon helps to derive or making petroleum for transformer oils and identified by the very low values of tan ẟ at 50 Hz and temperatures from (20-125)℃. The water content in oil also affects the paper insulation of the core and winding of a transformer. Transformer oil composition, comprising at least one acid interceptor . Severely hydrotreated oils can serve a variety of purpose: Nytro 4000X is an insulating oil; T110 is a base oil ; Nypar 315 and Nyflex 3150 are process oils; The given samples were provided by courtesy of Nynas AB, Sweden. help dissipates ). An Insulating Oil must have the following properties: 1) Excellent dielectric properties resulting in minimum power loss. Kind Code: A1 . Transformer oil or insulating oil is usually a highly-refined MINERAL OIL that is stable at high temperatures and has excellent electrical insulating properties. The sludge of Naphtha oil does not precipitate in the bottom of the transformer and does not disturb the transformer cooling system. Powerlink Oil Refinery Ltd. All rights reserved. Abstract: The invention relates to a transformer oil composition comprising at least one acid interceptor. There are some different types of transformer insulating oil available in the market. By contrast, the four samples of paraffinic transformer oils have a very different distribution. On the other hand, naphthene based oil has a very low pour point. Transformer oil is generally a hydrocarbon and thus hydrophobic; how - ever, when the sample undergoes oxidative degradation, oxygenated species such as carboxylic acids are formed, which are hydrophilic in nature. Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. 1.2 Scope. The oil behaves as the dielectric medium as well as the coolant. Transformer oil is used to insulate the electrical power of a transformer and used to stop the direct contact of oxygen in the transformer. There are some different types of transformer insulating oil available in the market. Int. Chemical composition of oil is quite complex. Insulating Oils or Transformer Oils are mineral electrical insulating oils processed from fractional distillation and treatment of crude petroleum. These gases are also dissolved in the oil but when there is a sufficient amount of gas formed in the oil it starts accumulated in the Buchholz relay. The negative particles are affected by the solid particles of the transformer, which dissolve in the oil. In a transformer, a high PF is an indication of significant power loss in the transformer oil, usually as a result of contaminants such as water, oxidised oil and cellulose paper degradation. 2. Also, it should be free from any suspended matters. Flash point: 140-150°C . Chemical Tests: – neutralization number, saponification value, copper strip corrosion, oxidation stability, inorganic chlorides and sulphates, steam emulsion number. Mineral oil filled transformers in the early 20 th century were free breathing, which allowed a constant oxygen supply. TRANSFORMER OIL PURCHASE SPECIFICATION. It can progress the process of resin formation and can increase in tan ẟ. Also during the operating condition of different pieces of electrical equipment in the substation or system, it becomes necessary to perform some tests on the transformer oil extracted as a sample from the equipment. The transformer oil is a combination of mineral oils. The basic chemical structures of all the oil are more or less the same. The pour point of the oil is much higher due to its wax-like content, but still, it does not create any major problem in using it in a country like India because of the warmer climate. Oxidation of transformer mineral insulating oils occurs over time, at a rate that is dependent on the composition of the fluid and the conditions to which it is exposed while in service, such as temperature, oxygen and catalysts. Dielectric Dissipation Factor or Tan Delta Value: – That should be within 0.02% at 90-degree centigrade for new oil. 1. But it was the necessity of using some effective insulating medium in the Transformers. The only differences are in their molecular structure and molecular weight. 4: first Aid Measures the composition of dielectric insulating oil must be clear transparent! Be within 0.02 % at 90-degree centigrade for new treated oil that should a... 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