The transformer oil is a combination of mineral oils. 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. Appearance: – The color of the oil must be clear and transparent. The transformer oil performs two very important functions. Among these two types of oil naphthene based oil is more preferred. Description. Naphtha oil gets more oxidized than Paraffin oil. (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. The basic chemical structures of all the oil are more or less the same. TRANSFORMER OIL PURCHASE SPECIFICATION. It is of two types: Paraffin-based transformer oil and Naphtha-based transformer oil. : rs 423-7363 supplier: electrolube. Save my name, email, and website in this browser for the next time I comment. Chemical Tests: – neutralization number, saponification value, copper strip corrosion, oxidation stability, inorganic chlorides and sulphates, steam emulsion number. An overview of Doble TOPS. 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. The sludge of Paraffin oil does not precipitate at the bottom of the oil tank and disturb the transformer cooling system. Composition of Transformer Oil. We are offering a wide range of Transformer Oil which is a series of high performance transformer oils specially developed to satisfy different application and various equipment needs. Different electrical and thermal faults occurred in the Transformer form the gases in the oil. The composition of transformer oils, in particular the balance between naphthenic, paraffinic, and aromatic carbon contents, can play an important role in determining the … Keywords: Baader aging, Hydrogenated transformer oil, Chemical composition, Electrical and physic- chemical properties 1. It is obvious that the Buchholz relay actuates only after a sufficient formation of gases in the transformer oil. Thus the oil may cause health and environmental hazards. Transformer oil is used to insulate the electrical power of a transformer and used to stop the direct contact of oxygen in the transformer. known as transformer oil, serves mainly two purposes: as insulation and as a coolant (i.e. It is uninhibited electrical insulating oil made up of superior quality base oil for use as an insulating and heat transfer media in electrical. Naphtha is more soluble than Paraffin oil. The only differences are in their molecular structure and molecular weight. Supply Ability. 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. It is a member of alkane series and a mixture of hydrocarbons. has two main purposes. Section 4: First Aid Measures To confirm these properties, the tests performed on the transformer oil can also be divided into three different categories. Paper is highly hygroscopic. The main problem with this relay is that the gases only accumulate in the relay container when the rate of production of the gases is high enough and when the oil gets saturated with the gases. 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. But during faults, due to electrical and thermal tresses, the formations of different gases in the oil get accelerated. The need for better dielectrics and transformer oils for insulation is unequivocal. Sludge Content: – That should be of a maximum of 0.1 percent by weight for new oil and it is 0.5 percent by weight for old and used oil. But it was the necessity of using some effective insulating medium in the Transformers. Gas concentrations are in percent by volume. Your email address will not be published. 2) High resistivity leading to better insulation values between windings. Transformer oil aging. The oil used in different pieces of switchgear equipment like circuit breakers, current transformers, potential transformers, etc. On the other hand, the byproduct created during the oxidation of paraffin oil is semisolid. DGA was first introduced for transformer oil in the year 1965 in the UK. Therefore only observing the behavior of the Buchholz relay is not sufficient to judge the healthy condition of a transformer. Oil has three different basic properties that identify the suitability of the oil for the purpose of insulation and cooling. 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. Most of the gases are easily dissolved in the oil. That is the same for oil. In this mineral Oil, available in market are by the name of POWER OIL, TRANSOL, SAVITHA, APAR, GHANDHAR etc. Pourpoint: – The minimum pour point of the oil should be – 6-degree centigrade. But the availability of paraffin oil is quite more than that of naphthene oil. Naphtha Oil: Naphtha Oil is a flammable or burnable, liquid hydrocarbon mixture. Chemical composition of transformer oil. These properties are physical, electrical, and chemical properties. It is used in waterproofing paper, candle, and for coating and seal. There are some different types of transformer insulating oil available in the market. Transformer oil consists of base oil plus, in some cases, additives (Figure 1). Powerlink Oil Refinery Ltd. All rights reserved. Actuates only after a sufficient formation of gases in the oil should be a minimum of 60 KV.! Stability: oxidation stability is the reason, naphthene base oil plus, in some cases, (... 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