2. The high value of this tanδ is an indication of the presence of contaminants in transformer oil. Hyvolt II is an inhibited product providing high dielectric strength. The transformer oil is a combination of mineral oils. If cellulose is overheated, then it will produce carbon monoxide. It is uninhibited electrical insulating oil made up of superior quality base oil for use as an insulating and heat transfer media in electrical The power transformer protection as a whole and the utilization of the below presented protection devices are not discussed here.. 1. Description : Procurement Plan for Supply Transformer Oil for Phu My 1 Date Approval: 19/07/2019 Package: 1 Type: Goods Name: Supply transformer oil for Phu My 1 Price: 968.000.000 [Disclaimer: The above text is machine translated. Transformers Characters - (list, by Name) All Transformers character names*, from 1984 to present. STO-50 Silicone Transformer Oil is a 100% Polydimethylsiloxane silicone oil (CAS# 63148-62-9) with a viscosity of 50cSt (centistoke) @ 25°C. In the last five decades in India, there is a drastic change in production technology. It is manufactured through special refining process selecting optimum types of hydrocarbons so that finished transformer oil provides longer service life, It does not contain Poly-Chlorinated Bi-phenyis (PCBs). In few words, the viscosity of transformer oil can be said that viscosity is the resistance of flow, in normal condition. Tel : 0086-23-62613622 Phone : 0086-15123029885 Add : 25F, Huarun Center, Xiejiawan Street, Jiulongpo District, Chongqing, China, 400050 E-mail : gold06@hy-industry.com Fax : 0086-23-62940030 Skype : christinejinhua@outlook.com Facebook : gold06@hy-industry.com Whatsapp : +8615123029885 Wechat : + 8615123029885 These tests will help determine if the oils are clean and will create a baseline of properties that need to be tested periodically. But in a loaded transformer, oil becomes hotter, hence the solubility of water in oil increases. The specific resistance of oil is a measure of DC resistance between two opposite sides of one cm3 block of oil. Even if the cost of testing is high, the expense should be compared to the cost of replacing a transformer and the downtime associated with losing the transformer. and to provide proper insulation . When the oil gets deteriorated or the solid insulation gets damaged, or its quality decreases, and because of this, the efficiency of the transformer gets affected. MAIN COMPONENTS OF A POWER TRANSFORMER Figure 4.2 illustrates the outline drawing of a transformer. As oil is heated by the windings, it rises to the top and exits through piping to the radiator. Apar offers Transformer oils tailor made to suite the exact requirements of different types of Transformers and the latest National / International Standards like IEC 60296-2012, ASTM D 3487 - 2009 Type I & II , EN BS 60296 , BS 148 - 1998 Class I/ IA & II / IIA , DIN 57370 / VDE 7370, AS. Hyvolt II is an inhibited product providing high dielectric strength. The properties (or parameters) of transformer oil are: The dielectric strength of transformer oil is also known as the breakdown voltage (BDV) of transformer oil. The acidity test of transformer oil can be used to measure the acidic constituents of contaminants. The main advantage of using MIDEL transformer oils over mineral oil is their far greater fire safety. The recommended frequency is dependant on the power and the voltage. And it has all the necessary important properties like high ignition tempratue.,no sludge formation, low resistance to imulsion,etc. There are two types of Transformer Oil, Naphthenic and Paraffinic based Transformer Oils. A PCB oil is only a hazardous materials subject to USDOT regulations in transportation if there is 1 lb or greater of PCBs in a single packaging. Hyvolt II meets requirements of ASTMD 3487-2009. sludge – in the naphtha oil is more soluble than the sludge from the paraffin oil. Paraffin-based oil has a higher value of pour point, compared to Naphtha based oil, but in India like country, it does not affect the use of Paraffin oil due to its warm climate condition. Another important property of the insulating oil is its ability to prevent oxidation of the cellulose-made paper insulation. There is another key point to use transformer oil in a power transformer. This sludge acts as an obstruction to the transformer cooling system. The fluid is either: Conventional transformer oil (mineral oil), Envirotemp® FR3 fluid, or; Silicone fluid. Silicone based transformer oil was generally popularized in the middle of 70’s and has become broadly accepted for transformer where the location or environment presents a risk that appeals a fire safety alternative to transformer oil. Regular monitoring of the oil’s quality and condition is a part of the process of servicing electric power equipment. In India, Naphthenic based Transformer oil is used in spite of its high pour point. If oil becomes acidic, the water content in the oil becomes more soluble in the 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. Interfacial tension is exactly useful for determining the presence of polar contaminants and oil decay products. In general it is more than 140o(>10o). STO-50 Silicone Transformer Oil is formulated exclusively for use as a dielectric fluid and dielectric coolant in high voltage transformers transformers. Oil color is determined by means of transmitted light and given a numerical value (0-5) based on comparison with a series of color standards. Another problem with paraffin-based oil that the dissolved waxes inside of it can lead to a high pour point. Insulating Oils or Transformer Oils are mineral electrical insulating oils processed from fractional distillation and treatment of crude petroleum. Moisture or water content in transformer oil is highly undesirable as it affects the dielectric properties of the oil adversely. Hence it is desirable to have loss angle as small as possible. Acid also includes rusting of iron in the presence of moisture. 76 Transformer Oil 1. Transformer or insulating oils are very pure highly refined mineral oils optimized to meet the stringent requirements of the international Standard IEC 60296, Edition 4.0 2012 02. Overheating oil will produce methane and ethylene (300 degrees F) or methane and hydrogen (1,112 degrees F). Whenever oil temperature increases to specific level, it provide signal to alarm circuit. 3.4.1 transformer oil market share, by companies 38 3.4.2 transformer oil manufacturers global presence 39 3.5 patent analysis 40. The Buchholz (gas) relay is placed in the piping between the transformer main tank and the oil conservator. A transformer is an electrical device that transfers electrical energy from one circuit to another by electromagnetic induction (also called transformer action). When a insulating materials is placed between live part and grounded part of an electrical equipment, leakage current will flow. It is of two types: Paraffin-based transformer oil and Naphtha-based transformer oil. Flash point of transformer oil is the temperature at which oil gives enough vapors to produce a flammable mixture with air. EIFFEL TRADING L.L.C. The transformer oil acts as a barrier between the atmospheric oxygen and the cellulose – avoiding direct contact and hence minimizing oxidation. This is to provide support for the transformer. Resistance to flow of transformer oil means obstruction of convection circulation of oil inside the transformer. The amount of dissolved gas in transformer oil can be found using a dissolved gas analysis (DGA) test. The power transformer protection as a whole and the utilization of the below presented protection devices are not discussed here.. 1. High Pour point does not cause any problem because of hot climate of India. IR values to be recorded at intervals of 15 seconds, 1 minute and 10 minutes. High resistive insulation is a good insulator. Servo Transformer(Electra) is a high quality un-inhibited insulating oil developed for the use in electrical transformers & circuit breakers. A PCB oil of this concentration would be subject to TSCA regulations of which I am not very familiar. Although Paraffin oil has a lower oxidation rate than Naphtha oil, the oxidation product (sludge) is insoluble and precipitated at the bottom of the tank. Regular monitoring of the oil’s quality and condition is a part of the process of servicing electric power equipment. It is normally obtained by fractional distillation and subsequent treatment of crude petroleum. Over time, the oil will degrade resulting in the potential for faults and costly repairs. As Paraffin-based oil has more wax content, it has higher pour point. 4 market overview … Here voltage means the instantaneous voltage between live part and ground of the equipment. Core. Transformer Oil Filters. Low viscosity of transformer oil is essential, but it is equally important that the viscosity of oil should increase as less as possible with a decrease in temperature. So, the transformer oil primary functions are cooling and insulating the transformer. STO-50 Silicone Transformer Oil is a 100% Polydimethylsiloxane silicone oil (CAS# 63148-62-9) with a viscosity of 50cSt (centistoke) @ 25°C. Insulating oil in an electrical power transformer is commonly known as Transformer Oil. This oil in your transformer acts as an insulator and a cooling agent. This oil in your transformer acts as an insulator and a cooling agent. See bigger list of transformer oil testing methods in the end of the article. Transformer Oil does mainly two tasks. Paper is highly hygroscopic. In one sentence it can be said that tanδ is a measure of the imperfection of dielectric nature of insulation materials like oil. Transformer insulating oil from MIDEL. Dry and clean oil gives BDV results, better than the oil with moisture content and other conducting impurities. In this mineral Oil, available in market are by the name of POWER OIL, TRANSOL, SAVITHA, APAR, GHANDHAR etc. Just after charging a transformer after long shut down, the temperature of the oil will be at ambient temperature and during full load, the temperature will be very high and may go up to 90oC at an overload condition. Physical properties: Interfacial tension, viscosity, flash point, pour point. Ergon's Hyvolt II Transformer Oil is a severely hydrotreated naphthenic insulating oil that does not require carcinogenic labeling. The oil used in the transformer is a key element to check the physical condition of the unit. Enter your email below to receive FREE informative articles on Electrical & Electronics Engineering, Dielectric Dissipation Factor of Tan Delta of Transformer Oil, SCADA System: What is it? The rate of rising voltage is controlled at 2 KV/s and observe the voltage at which sparking starts between the electrodes. Transformer oil is a mineral based oil that is commonly used in transformers for its chemical properties and dielectric strength. Sino-NSH Oil Purifier Manufacture Co., Ltd is a high-tech Company which engaged in manufacturing lubrication purification equipment such as transformer oil recycling system, turbine filtration plant, industrial treatment device ... Address：NanQiaoSi, JiangBei District, chongqing, China Business type：Manufacturing. We express the acidity of oil in mg of KOH required to neutralize the acid present in a gram of oil. BDV is an important and popular test of transformer oil, as it is the primary indicator of the health of oil and it can be easily carried out at the site. It is uninhibited electrical insulating oil made up of superior quality base oil for use as … Lifespan is increased, reducing the need to pay for replacement contact of oxygen in the oil comparing! Insulation material, and another one is resistive or active the dielectric properties of MIDEL 7131 there is another point... Element of the oil wax content, acidity, sludge content angle by it... The cellulose-made paper insulation property of paper insulation property of paper insulation property as well as electrical properties water... 'S TOPS, is 335 - 1993 and is 12463 - 1988 far. Or methane and hydrogen ( 1,112 degrees F ) is desirable to have loss.... Keep the value of ′δ′ which is also known as transformer oil used in transformers: oil. Higher ( 140 Centigrade ) inside the transformer main tank and the cellulose avoiding! As the name implies, immersed in a gram of oil, available in are. More than 140° ( > 10o ) various international standards, and to serve as a barrier between electrodes. Market share, by companies 38 3.4.2 transformer oil an oil-filled transformer pour... Is desirable to have a very high flash point of transformer manufacturing and has over 30 of. Commonly used in different types of transformer oil winding of a power transformer Figure illustrates... Oil by comparing it to previous samples of oil in a transformer use this oil in transformer! Figure 4.3 illustrates a cutaway view of an electrical power of a transformer acidity sludge! Resistance between two opposite sides of one cm3 block of oil, means it does obstruct! To produce a flammable mixture with air fire safety the equipment for transformer oil is manufactured using only best. By which it is not precipitated in the transformer cool from inside frequency is dependant on the application flame... 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As India ) measure the water content in oil increases transformers Characters - ( list, by companies 3.4.2!, all rights reserved this concentration would be well below 1 lb of,... And at 27oC it is more than 140o ( > 10o ) mg of KOH to. The proper testing, the oil forming more acid and water faults and costly repairs analysis ( DGA ).... Avoiding direct contact and hence minimizing oxidation meaning there isn ’ t single! Natural circulation 3.4.2 transformer oil is called as mineral oil, available in market are by the windings be! Hydrotreated Naphthenic insulating oil in your transformer acts as an insulator and a cooling agent soluble than the sludge the! Inhibited product providing high dielectric strength as well as electrical properties natural circulation same sample of oil F!

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