In addition to Engler instruments for measuring relative viscosity, other viscometers can also be used: rotary, ball, electric-rotary, capillary and plasto-viscometer. Therefore, in practice, the best option is selected, which is able to enusre good performance of both functions. So Viscosity of the transformer oil should be very less. Transformer oil with low viscosity is preferred as it exhibits less resistance to the conventional flow and hence does not affect the cooling of th e transformer. Application of GlobeCore technologies makes it possible not only to maintain the parameters of transformer oil at the proper level, but also to restore them in case of deterioration. (ASTM D455; D88) Viscosity is the resistance of oil to flow under specified conditions and is the principal factor in the convection flow of oil in an electrical device. Low viscosity of transformer oil is basic, yet it is similarly vital that the thickness of oil should increment as less as conceivable with a diminishing in temperature. Dynamic viscosity of the pure transformer oil and prepared nanofluids at various temperatures from 25 to 65 °C and solid volume fractions from 0.001 to 0.01 is experimentally investigated and shown in Fig. It is mandatory to procure user consent prior to running these cookies on your website. Determination of relative viscosity of transformer oil is carried out by means of a special device – Engler viscometer. the oil, while viscosity, flash point, specific resistance, transformer insulation, interfacial tension decrease with age. The fact is that in the course of power transformer operation a number of adverse factors affect transformer oil: sunlight, high temperatures, oxygen in the air, mechanical impurities, etc. The Viscosity-Gravity Constant (VGC) is ascertained after ASTM D2501. Globecore GmbH Edewechter Landstraße 173 Raise in temperature decreases its viscosity and vice versa. Hydrotreating limits unwanted segments, for example, sulfur, nitrogen, and aromatics. Then, it is crucial to decrease the viscosity of the aged oil. Great oil ought to have a low viscosity with the goal that it offers less protection from the traditional stream of oil along these lines not influencing the cooling of a transformer. Transformer Oil The ultra low sulphur and wax free Naphthenic Oils/Paraffinic oils along with low Viscosity Index ensure excellent cooling characteristics, high solvency and low corrosivity. The viscosity of oil in Engler’s degrees is the time required for efflux of 200 milliliters of oil heated to the temperature of 50°C divided by the efflux time of the same volume of distilled water, but at 20°C. Ergon’s HyVolt C50A transformer liquid is produced from a severly hydrotreated naphthenic oil to meet the specification requirements defined for Type IV, Class A Arctic Grade use. It is used as electrical insulation material, for heat dissipation and arc-extinguishing, as well as the medium protecting solid insulation from air and moisture. The procedure will yield items, which are as per institutionalized determinations. Kinematic consistency esteems at 40 °C and 100 °C are extrapolated from the deliberate kinematic viscosities as indicated by ASTM D341. We'll assume you're ok with this, but you can opt-out if you wish. Kinematic viscosity, not to be mistaken for density, is a proportion of a liquid’s protection from stream. The short answer here is yes, the machines will burn the oil quite easily and cleanly. Transformer oil filtration, purification, dehydration and oil reclaiming plants from GlobeCore are considered to be an energy-efficient and environmentally friendly solution to the problem of maintaining transformer oil quality characteristics! (c) Viscosity: Viscosity describes a fluid's internal resistance to flow and may be thought of as a measure of fluid friction. Your email address will not be published. In engineering calculations, the concepts of specific viscosity, kinematic viscosity and dynamic viscosity are used. This category only includes cookies that ensures basic functionalities and security features of the website. Close-up of a transformer, with CGI imagery showing the oil within the transformer mechanism. In order to find dynamic and kinematic viscosity special empirical formulas are used that take into account the force exerted on a solid ball in oil as well as its radius, velocity and the vessel’s radius and height. One of the main functions of the oil in a transformer is to transfer heat from the core to the external radiators. Protection from stream of transformer oil implies obstacle of convection course of oil inside the transformer. High angle view of a stream of transparent liquid being poured into a glass beaker against a white background. Besides providing the transformer with a liquid dielectric insulating medium, transformer oil also serves as the transformer’s major coolant and heat transfer medium. Typically this oil is of a lower viscosity and it is also generally very clean oil. Learn how FR3 fluid’s properties make it superior to mineral oil. Dissolved gas analysis. Obviously resistance to flow of transformer oil means obstruction of convection circulation of oil inside the transformer. Transformer Oil Usage precautions Avoid spilling. The oil must be mobile to transfer the heat in a better manner from the core to the transformer radiators where heat is dissipated. ), even if it is not listed in the directory. Further, thickness esteems at 15 °C are extrapolated by API (American Petroleum Institute) capacities, utilizing item aggregate ‘D’ – Lube oils. Measuring of transformer oil viscosity. In few wards, viscosity of transformer oil can be said that viscosity is the resistance of flow, at normal condition. Necessary cookies are absolutely essential for the website to function properly. Other than giving the transformer a fluid dielectric protecting medium, transformer oil additionally fills in as the transformer’s significant coolant and warmth exchange medium. viscosity is a parameter that influences warm exchange as oil normally courses in little transformers and as it circles by drawing in huge transformers. Acknowledged as the leading Public Sector Company of Pakistan, PSO has been driving the wheels of the national economy and is the first public company to pass the 1 Trillion rupee revenue mark. Viscosity of Transformer Oil. Thus, water is "thin"; having a lower viscosity, while honey is "thick" having a higher viscosity. Viscosity is no exception too. T 2 T 1 P w w f n p = Oil flow speed = Calculation factor For example, the average value of transformer oil kinematic viscosity is (28-30)∙10-6 m2/s. Transformer Oil Cooling 9 S11 Viscosity !Lowest possible viscosity is the best way to obtain rapid and efficient cooling in a transformer Heat transfer in transformers 29.09.13 Calculation of the natural oil circulation speed on basis of the Laws of Bernoulli, Newton, Reynolds and Prandtl. Transformer Dielectric Fluid Comparison. The aged oil always has a higher viscosity than the fresh oil due to its degradation. Oldenburg-Eversten, Deutschland, 26131. 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. It influences heat transfer and, consequently, the temperature rise in apparatus. Compare the typical characteristics and performance of mineral oil, FR3 ® natural ester fluid, synthetic ester fluid, and silicone transformer oil.. For a more precise estimate tailored to your needs, contact us. water 10cSt. Therefore, to maintain all the operating parameters of transformer oil at normal levels, it is necessary to perform certain activities: oil filtration, cleaning, drying and oil reclaiming. The respective increase or decrease are detrimental to the transformer Advice on general occupational hygiene Do not eat, drink or smoke when using this product. 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. With various added substances, base oils end up detailed motor oils, outfit oils or additionally protecting oils and warmth exchange oils. As in many cases, the selection of oil for electrical equipment requires a compromise. Burning of Transformer Oil in EnergyLogic Machines We have occasionally been asked about burning transformer oil with EnergyLogic waste oil heaters and boilers. The AT2 Automated XY Stage can be installed on any new or existing 5900 and 6800 Series universal testing systems to automate compression, tensile, and flexure testing. Viscosity of Transformer Oil In few words, the viscosity of transformer oil can be said that viscosity is the resistance of flow, in normal condition. Flash point of transformer oil is the temperature at which oil gives enough vapors to produce a flammable mixture with air. 76 Transformer Oil 1. Its very low pour point, excellent electrical properties and high level of oxidation stability makes ADVANTAGE HYVOLT II ideal for the demanding requirements of today’s leading transformer manufacturers. Viscosity is a parameter that affects heat transfer as oil naturally circulates in small transformers and as it circulates by pumping in large transformers. The carbon composes conveyance as a quality parameter for oils permits to part the aggregate structure of the heavier portions of oil into the paraffinic, naphthenic and fragrant arrangement. Type of oil Nytro 4000X insulating oil T110 base oil Nypar 315 process oil Nyflex 3150 process oil Viscosity Index [-] 62.928 32.26 104.873 71.5 Kin.Visc. For example, the average value of transformer oil kinematic viscosity is (28-30)∙10-6 m2/s. We also use third-party cookies that help us analyze and understand how you use this website. The chemical properties of transformer oil mainly include acidity, water content, etc; The physical properties of transformer oil mainly include pouring point, flash point, and viscosity. PRODUCT AND COMPANY IDENTIFICATION Product Name: 76 Transformer Oil Product Code: 1041410 Intended Use: Insulating Oil Synonyms: Conoco Transformer Oil Phillips Transformer Oil Chemical Family: Petroleum Hydrocarbon Responsible Party: Conoco Lubricants A Division of ConocoPhillips 600 N. Dairy Ashford Houston, Texas 77079-1175 ASTM D2502 depicts how to get the mean atomic weight from thickness estimations at 37.78 °C and 98.89 °C (100 °F and 210 °F). The efficiency of cooling depends on fluid flow within the transformer … Testing. This particular grade has a low pour point and low viscosity at very low temperatures and excellent oxidation stability. Viscosity: It measures the oil resistance to the continuous flow without the effect of the external forces. Viscosity is one of the most important properties of transformer oil, which is associated with its great influence on heat exchange processes in oil-filled equipment. Usually reference literature gives a few values of transformer oil viscosity specified for particular temperatures. Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. Low viscosity improves cooling; Remarkably low sludge & acidity formation in both ageing & oxidation tests; Gives longer life to oil and equipment during storage and service; Applications. Or contact us to find out how FR3 fluid can meet your business’s and community’s needs. Protecting oils assume a critical job in power supply. But opting out of some of these cookies may have an effect on your browsing experience. Save my name, email, and website in this browser for the next time I comment. Higher viscosity may mean better dielectric strength, but may reduce the ability of the oil to transfer heat and cool the transformer. Other than giving the transformer a fluid dielectric protecting medium, transformer oil additionally fills in as the transformer’s significant coolant and … Special equipment has to be used to preserve the optimal numerical value of transformer oil viscosity during the whole service life. Viscosity. This website uses cookies to improve your experience. First of all we are talking about breakdown voltage, acid number, dielectric loss tangent and flash point. Your email address will not be published. The oil’s viscosity plays an important role in the effectiveness of this heat transfer. For the past 44 years, Pakistan State Oil has been fuelling the needs of the nation. The footage pulls back to a wider view of the transformer against the background of the power station. A transformer filled with FR3 fluid complies with the transformer temperature operating ranges requirements defined in IEEE C57.12.00 and IEC 60076-1. Table 6 shows the viscosity value of the fresh, aged, and treated oil samples. The combination of these factors leads to deterioration of oil operational parameters and their deviation from the normal values. Oils with particular carbon compose dispersion are intended for different businesses. Testing of transformer oil is mandatory in yearly once for its maintenance. Always remove oil with soap and water or skin cleaning agent, never use organic solvents. An in-service test will provide the utmost certainty in selecting the most suitable pump type. Powerlink Oil Refinery Ltd. All rights reserved. Standard ASTM D3238 characterizes how to ascertain the carbon dissemination and ring substance without olefin oil oils from the estimation of the refractive list, thickness and sub-atomic weight (by the nd-M technique). Base oils – consistent with their name – are the reason for an assortment of items. Gulf transformer oils are widely used in transformers, oil immersed circuit breakers and switch gears It is easy to find the viscosity value at a given temperature applying well-known mathematical methods (interpolation, extrapolation, etc. Since operating conditions of power transformers are quite severe and may be characterized by elevated temperatures, one should take into account the change in oil viscosity when heated. You also have the option to opt-out of these cookies. The lower the viscosity, the easier the oil can be pumped or can circulate freely throughout the transformer for improved heat transfer and The breakdown voltage is that voltage at which sustained arcing takes place. May reduce the ability of the website to function properly water or skin cleaning,... Dispersion are intended for different businesses also generally very clean oil of your picked oil at limits. 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Contact us to find out how FR3 fluid complies with the transformer.! Oil is a proportion of a lower viscosity, while honey is `` thick '' a! `` thick '' having a lower viscosity and vice versa the oil with soap water. Or skin cleaning agent, never use organic solvents motor oils, outfit oils additionally! Is that voltage at which sustained arcing takes place and community ’ s needs it circulates by pumping in transformers... Operating ranges requirements defined in IEEE C57.12.00 and IEC 60076-1 occupational hygiene not!