Visit our Privacy Policy to learn more. Transformer oil's primary functions are to insulate and cool a transformer. It is gained from fractional distillation process with the successive processing of crude petroleum. The Paraffin derived transformer mineral oil has a higher pour point as it has more wax content in it. The definitive specific value of resistance for transformer oil at a set value of 90oC is found as 35 × 1012 ohm-cm and at 27oC the value change as 1500 × 1012 ohm-cm. Experiments conducted to find viscosity, surface tension, density, specific resistance, electrical conductivity, and dielectric dissipation at various temperatures ranging from 20 °C to 90 °C. The pour point of Paraffin-based oil is high when compared with Naphtha based transformer oil, but it is suggested to use paraffin oil in hot weather places. Depending on the origin of the crude base stock oil, it will contain different properties. in Dyne/cm or milli-Newton/meter. Interfacial Tension is the measure of molecular attractive force between the oil and water molecules at their interfacial level. EOK Series – Transformer Oil Purifying Plants, TIDO Series – Online Transformer Insulation Drying & Degassing Systems, ISODRY Series – Online Transformer Insulation Drying Systems, Transformer Oil Regeneration and Reclamation, Transformer insulating materials maintenance guidelines. The presence of moisture or suspended particles in transformer oil affects its dielectric property. Brands Dealt with : Veedol, elf, Valvoline, Servo, Castrol, Mobil,gulf, shell, timken petronas, ac delco, hp ,tvs ,elgi, mak ,kyros, Based in Madurai, Dealers of Lubricating Oils, Greases all around Southern States, How To Pick The Right Motor Oil For Your Car. Some of the main characteristics of transformer insulating oil are as follows: Oil is a fuel, biodegradable, practically non-toxic, and does not cause damage to the ozone. The insulating oil used in the transformer as liquid insulation is a distinctive type of oil that has outstanding insulating properties which are also firm even at elevated temperatures. PAGE LUBES has proven itself more than ready to respond immediately to new opportunities. Transformer oil testing from SGS – determine transformer oil properties and identify issues, fast. The properties (or parameters) of transformer oil are: Electrical properties: Dielectric strength, specific resistance, dielectric dissipation factor. Transformer Oil is used for insulation and cooling of transformer. Watch Queue Queue. Nanofluids have the potential to become the alternatives of conventional transformer oil for their exquisite electrical and thermal properties. The dielectric properties of the transformer oil are affected by the water content in the oil which further tends to dielectric break down of the oil. The undeniable and by and large known viewpoint is its immediate impact on the dielectric quality of the protecting medium – oil and strong protection. Over the years of service, the insulating oil which acts as dielectric to protect the core and windings of the transformer gets dissolved by acidic substances due to the various reactions it undergoes. Our customer support team is here to answer your questions. It is one of the most sensitive properties of transformer oil. act as a coolant). Synthetic transformer oil like chlorinated di-phenyl has excellent properties like chemical stability, non-oxidizing, good dielectric strength, moisture repellent, reduced risk due fire and explosion. So, the transformer oil primary functions are cooling and insulating the transformer. This flashpoint parameter is considered important as it analyses the character of the oil is getting fire. For good Transformer Oil Flash Point should be higher (140 Centigrade). It is used in oil-filled transformers, some types of high-voltage capacitors, fluorescent lamp ballasts, and some types of high-voltage switches and circuit breakers.Its functions are to insulate, suppress corona discharge and arcing, and to serve as a coolant. Germany, CanadaHering-VPT, Suite 391, 6-425 Hespeler Road Cambridge N1R 8J6CanadaTelephone: +1 226 221 0061. OilRead More Hering-VPTD-91550 Dinkelsbühl Note: Oxidation is the natural process of aging of a transformer oil. The representing unit of specific resistance is found as ohm-cm at a particular rundown temperature. This oil is used to protect the transformer core section and also the windings where the windings are completely submerged in the oil. For good transformer oil Total acidity should be low. Oil ageing: Once put into operation, the insulating oils may exposed to miscellaneous conditions such as contact with air, atmospheric moisture, high operating temperature which in turn will promote deterioration of transformer oil molecules regardless of the oil… For good Transformer Oil Moisture Content Should be low. PROPERTIES OF TRANSFORMER OIL Dielectric breakdown voltage- The insulating property of an electrically insulative material can be determined by its dielectric strength (dielectric break down voltage). Hence transformer oil it should be tested periodically. It is essential to closely monitor the pour point of the transformer oil if the equipment is in service at places where the temperature usually below zero degrees. Definition: Ideal Transformer is a hypothetical transformer having infinite permeability core and zero core loss and ohmic loss. Transformer oil is a refined mineral oil obtained from the fractional distillation of crude petroleum. We also use third-party cookies that help us analyze and understand how you use this website. An ideal Transformer does not exist in reality. Transport properties of transformer oil are important parameters for electric equipment designing. © 2021 All Rights Reserved by Hering VPT. And influence of transformer oil's thermal conductivity was investigated. Definitive Resistance of Transformer Oil – The other demanding property of transformer oil is the specific resistance which can be determined by finding the direct resistance across the two adverse sides of one cm 3 slab of oil. Transformer Insulating Oil Characteristics. Oil will be oxidized very soon and caught fire when the temperature reaches near 100 deg .C. Most Important: Some spurious oil is being supplied by some spurious Trader in the Name of Transformer oil which looks like Transformer oil but actually this type of oil having flash point of about 100 deg C is very dangerous to public life and property. Transformers need oils with excellent cooling and insulating characteristics. Transformer oil properties Transformer oil serves as a heat dissipater for heating parts of the transformer and as insulator of energized components. Our services include Lubricants sales and delivery of major lubricant brands, proprietary brands, and Wholesale Trading. Even though the basic functions of the oil used in transformers are (a) heat conduction and (b) electrical insulation, there are many other properties which make a particular oil eminently suitable. Properties of Transformer Oil. content, as well as general impurity content are some of the properties that increase with age of the oil, while viscosity, flash point, specific resistance, transformer insulation, interfacial tension decrease with age. It is basically the voltage value that can lead to the loss of the ability to withstand electrical stress. This flammable gas is dangerous as it can produce sparks when exposed to fire. The temperature of the transformer insulating oil considerably increases, when the resistivity of the insulating oil fallout sharply. Hence the transformer oil must possess increased resistivity at normal room temperature and it should also possess a desirable value of resistance at higher temperatures as well. To know more about Properties, Electrical and Chemical characteristics of Transformer Oil keep following us. Crude petroleum contains sulphur compounds. Here voltage represents the instant voltage that occurs in the middle of phase and ground parts of the transformer. Hence it is necessary to test the contaminated insulating oil for its acidity and to remove the acidic constituents from the oil as it also accelerates the process of ageing through oxidation. PROPERTIES OF TRANSFORMER OIL:Transformer core and windings are immersed in mineral oil called Transformer oil which acts as an insulator and also as a cooling material. Richard-Stücklen-Strasse 19 Properties Mineral oil: 1.0: Flammable. All these compounds are hydrocarbons, so Transformer Oil is is a pure Chemical properties: Water content, acidity, sludge content. By testing for Interfacial tension we can determine the soluble polar contaminants present in the oil which reduces the molecular attraction force between the oil and water. Also, it is the responsibility of the enclosed transformer oil to avoid the reaction of oxygen with the paper insulation which is made of cellulose material and thereby extending the life span of the transformer. As the temperature increases, the density of the oil decreases. But opting out of some of these cookies may have an effect on your browsing experience. Remove all; Used in some capacitors. Watch Queue Queue. In this work, thermal conductivity was measured from 253 K to 363 K by single transient hot-wire technique. The oil must be mobile to transfer the heat in a better manner from the core to the transformer radiators where heat is dissipated. Mineral oils … Modern technologies allow to make quality transformer oil from any crude oil. n-Hexane: 1.1–1.3: Flammable. Transformer Oil forms a very significant part of the transformer insulation system and has the important functions of acting as an electrical insulation as well as coolant to dissipate heat losses. Therefore deterioration in insulating property due to moisture or contamination may be more relevant. Breakdown strength voltage is measured as the voltage at which spark plugs between the two electrodes that are dipped in the oil, isolated by a particular distance. In this regard, nanoparticles suspended in a base fluid are considered to be of great interest to enhance the thermophysical and dielectric properties. Pour Point of transformer oil mainly assessed by the amount of lubricant content present in the oil. These oils are used… Interfacial Tension of Transformer Oil:- An interfacial pressure between the water and oil interface is the best approach to quantify the alluring atomic power among water and oil. However, it has been shown that the amount of 2- furaldehyde in oil (usually the most prominent component of paper decomposition) is directly related to the DP of the paper inside the BDV is a primary factor of transformer oil, as it indicates the health of oil abruptly and it can be estimated at the onsite eventually without much effort. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. two naphtenic oils are considered, the Nynas Nytro 10 GBXS of 15 years old and a new Borak 22. Space Charge Effect Mechanism and Insulation Properties of Transformer Oil Under Two Kinds of Electrode Material June 2018 Gaodianya Jishu/High Voltage Engineering 44(6):1750-1756 This survey deals with the study of the main characteristics that are required for transformer oils, i.e. Even low levels of oxidation of the transformer’s oil will reduce the life of its cellulose insulation. Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. Common type of transformer oil. Though it is evident that no insulating material is purely dielectric but possibly have some conducting properties. To function efficiently, the dielectric fluid must have certain operational characteristics. This oil is used to protect the transformer core section and also the windings where the windings are completely submerged in the oil. Skip navigation Sign in. Loading... Close. When the insulating materials are located in the middle of the active section and the base section of electrical equipment, aperture current will be developed which flows through it . Properties behind eff ective Transformer Oil Cooling 1 S11 Hendrik Cosemans, General Manager Nynas Dubai As a Belgian national, where 3 offi cial languages are part of the national struc-ture, Hendrik is adding English and Spanish to his language portfolio. Transformer oil or Insulating oil is an oil that is extremely refined mineral oil which is always durable at high temperature and great electrical insulating properties. Properties of good transformer oil are explained in this article. Apr 10, 2019 - A SIMPLE explanation of Transformer Oil. This category only includes cookies that ensures basic functionalities and security features of the website. Therefore the specific resistance of the transformer oil should be estimated at the temperatures of minimum as well as maximum set values. This highly refined mineral oil has excellent electrical insulating property in comparison with other mineral oils. Normally, hydrocarbon mineral oils are used as transformer oil. 3) It preserves the Core and the winding of the Transformer as the Transformer Core and winding remain immersed in the Oil. Transformer Oil Properties. The oil’s “Dissipation Factor” is responsible for the oil’s dielectric properties and protects the transformer’s electrical system from possible short circuits. Cookie settingsACCEPT. Hence frequent testing of moisture content in the oil is very necessary for the reliability of the power system. A significantly less value of BDV indicates the existence of a considerable amount of wetness and steering ions in the oil. The oil provides resistance to its flow through the parts of the transformer which increase temperature. The transformer is affected by its operating conditions such as operating temperature, atmospheric conditions, electric strength, moisture content and other contaminations and sludge formation. Dielectric dissipation factor can be termed by another names called loss factor is also accepted as the tan delta of the insulating transformer oil. So measurement of the total acidity is the tool to determine the capability of oil for non formation of It is desirable to choose a transformer oil that has excellent pour point. Therefore it is obligatory for a better transformer insulating oil to have a responsibly higher flashpoint. These and the other characteristics of transformer oil are improved by the use of high quality crude oil, deep refining and introduction of additives that increase the oil’s oxidation stability and reduce corrosion. Functions: in addition to insulating function, it will contain different properties of waste transformer oil tends absorb. 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