It must therefore have high dielectric strength, thermal conductivity, and chemical stability, and must keep these properties when held at high temperatures for extended periods. GlobeCore. Transformer Insulating Oil Characteristics. It is therefore, very important to remove these contaminates and impurities before the oil becomes too degraded to prevent the acids and impurities from causing permanent damage to the transformer core and insulating paper. The density of transformer oil is usually in the range of (0.84-0.89) × 103 kg/m3. Insulating Oils or Transformer Oils are mineral electrical insulating oils processed from fractional distillation and treatment of crude petroleum. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful. Sulphur compounds < 1% Severely hydrotreated oils can serve as base oils, insulating (transformer) oils, or process oils. As the temperature expands, the density of the oil diminishes. The density of the heavy oil in the Shanjiasi field is up to 0.9719 g/cm 3.The dynamic viscosity of this heavy oil reaches hundreds of thousands of millipascal-seconds at 50°C. to Transformer oils (insulating oils) to Properties of fluids. PROPERTIES OF TRANSFORMER OIL. Usually this parameters is not regulated and is within 0.856 to 0.886. Hence the name “inhibited oil.”  The most common anti-oxidant additive used to inhibit oil is Ditertiary butilparakrezolom (DBPC-2.6). Anti-oxidant inhibitors have been found to greatly increase the effective service life of the insulating oil by slowing oxidation caused by acids and other harmful impurities giving rise to aggressive degradation of insulating paper. This is because it tends to deteriorate over time. This means that every time you visit this website you will need to enable or disable cookies again. Max. In order to perform additional tasks in transformers  (such as heat transfer and cooling) and switches, the oil must have a lower viscosity. Transformer Oil is basically an Insulating Oil. The all important “Dielectric Strength” of transformer oil will be greatly reduced by the presence of fibers, water, and other contaminates found in the oil. Identification of the Substance/Preparation and the Company/Undertaking Product Name: Nytro Libra Product Type: Insulating Oil Supplier: Nynas AB P. O. Copyright © 2021 Multiply Media, LLC. 2) High resistivity leading to better insulation values between windings. The low temperature pour point indicates the oil’s ability to flow in extreme cold. An Insulating Oil must have the following properties: 1) Excellent dielectric properties resulting in minimum power loss. These have a pronounced affect on the function of the oil. Immediately after pouring the oil into the transformer, allowable values for breakdown voltage is 5kV lower than before oil filling. 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. As the temperature increases, the density of the oil decreases. If the oil is heated, its specific weight decreases, and … Limits of parameters of transformer oil as recommended buy Indian Standard 335. Density of Transformer Oil at 29.5oC is 0.89g/cm3. Flush 2-4 quarts of waste oil through the sample valve before collecting the sample. Oil has many uses; it heats homes and businesses and fuels trucks, ships, and some cars.A small amount of electricity is produced by diesel, but it is more polluting and more expensive than natural gas.It is often used as a backup fuel for peaking power plants in case the supply of natural gas is interrupted or as the main fuel for small electrical generators. When did organ music become associated with baseball? 2 Table 1: Mineral-Oil Based Transformer Oil Constituents Who is the longest reigning WWE Champion of all time? All Rights Reserved. Why don't libraries smell like bookstores? 5 . Operating oil is allowed a number of deviations from the curing temperature depending on whether the oil is used in a transformer or a switch, and whether it or operates indoors or outdoors. Using transformer oil with a water content of 0.0025% (wt. Rates of breakdown voltage (BDV), depending on the operating voltage of the equipment, must be equal (kV). Naphthyl or cycloparaffins 60-70 % Does whmis to controlled products that are being transported under the transportation of dangerous goodstdg regulations? Description. Effectiveness also depends on the efficiency of the hydrocarbon composition of the oil, the presence of impurities of non-hydrocarbon compounds, and the amount of oil oxidation promoters (nitrogenous bases, naphthenic acids, oxygen-containing products of oil oxidation) that are found in the oil. 8. 1. If the insulating fluid specific gravity is less than 1, sample from the bottom. From the standpoint of high dielectric strength, it is desirable to have a higher viscosity oil. What did women and children do at San Jose? One of the most important properties of transformer oil is the ability of the oil to resist the oxidation process over periods of extended use under adverse operating conditions. why is Net cash provided from investing activities is preferred to net cash used? 11001 - transformer oil revision date:may 2003 safety data sheet transformer oil 1. identification of the substance/preparation and the company: product name: transformer oil part no. Read More. A representative sample of the oil shall be examined in 100 mm thick layer at 27°C The oil shall be clear and transparent & free from suspended matter or sediment Transparent, clear and light: Density @ 29.5°C: IS : 1448 (P-16)-0.89: 0.840 g/cm 3: Kinematic Viscosity @ 27°C, cSt: IS : 1448 (P-25)-27: 12.4 cSt Find here online price details of companies selling Transformer Oil. Transformer oil temperature also has an effect on the density of transformer oil. Density of transformer oil depends on the manufacturer. Testing sequences and procedures are defined by various international standards, many of them set by ASTM. Standard grades. The color of the oil is determined by transmitting a light and is given a numerical value between 0-5 which is compared with a series of color standards. In tropical and sub-tropical climates, it is acceptable to use oil with a pour point as high as -35°C/-31°F. Aromatics 15-20% The oxidation reaction is the main carrier of the peroxy radicals . Despite the variables that determine the density of the oil, the density number should not exceed 900 kg / m3 at a predetermined temperature of +20°C/+68°F. source- Transformer Oil Density and Viscosity - ! Equipment for Transformer Oil Reclamation. Today, many transformers use “Inhibited Oils.”  An inhibited oil contains anti-oxidant additives that help to slow and inhibit the oxidation process. From the standpoint of high dielectric strength, it is desirable to have a higher viscosity oil. 6. Get info of suppliers, manufacturers, exporters, traders of Transformer Oil for buying in India. The oxidation chains are broken by the presence of the oxidation inhibitor additives. How much money do you start with in monopoly revolution? As the name suggests, the oil sample is compared with a previous sample from the same transformer and is checked for darkening of oil. Otherwise the transformers will not be able to be properly cooled, and switches can break arc. Extreme low temperature pour point (-45°C -49°F and below) is also an important quality found in the better brands of insulating oil. 1. Paraffins 10-15 % Transformer oils primary insulate and cools transformers, but can also be found in other electrical equipment, such as high voltage switches and circuit breakers. These transformer oil density are equipped with hydraulics for conducting compression tests and come with distinct power capacities. These transformer oil density are comprised of automated technologies that offer precise analysis and details on the outcome of a test phase. Box 10700 S-121 29 STOCKHOLM Sweden E-mail address: ProductHSE@nynas.com Telephone No: +46-8-602 1200 Fax: … Two of the main characteristics of transformer oil are its viscosity and density. How long will the footprints on the moon last? There are several benefits to conducting periodic analyses of a transformer's insulating fluid. Oil Purification and Regeneration Equipment. Specific weight of transformer oil Specific weight of transformer oil is the ratio of its weight at 20ºC to the weight of the same volume of water at 4ºC. Mineral-oil based transformer oil is composed of the materials listed in the Table below. ensures that the temperature (of the oil) must fall to -20oC before the density of the oil would exceed that of ice'. High grades. Heavy oil and bitumen are characterized by high-density, high-viscosity, and high-heavy fraction components. Transformer oils must be able to remain stable at high temperatures for long periods of times. Dielectric Dissipation Factor … The cleanliness class of the oil is allowed to down grade by one class after filling. Super grades. These distinctive properties of the feedstock will have an affect on the the properties of the oil. After the anti-oxidation additives have become depleted over time and through extended use, the oil will oxidize at a rate close to the rate of oxidation in an “uninhibited” base oil. 7. Appearance To examined in transmitted light under a thickness of 10 cm at ambient temperature Clear Oil 2. Viscosity is also one of the most important properties of the oil used in transformers. That is why specific resistance or resistivity of transformer oil should get measured at 27 o C as well as 90 o C. Minimum standard specific resistance of transformer oil at 90 o C is 35 × 10 12 ohm–cm and at 27 o C it is 1500 × 10 12 ohm–cm. Insulating oils play an important role in power supply. To ensure effective heat dissipation transformer oil should have a viscosity of at least 90 at 150°C (+302°F). If you disable this cookie, we will not be able to save your preferences. Transformer oil's primary functions are to insulate and cool a transformer. The Dielectric properties of oils are mainly determined by the dielectric loss tangent. The specific density of transformer oil will vary based on the manufacturer and region or location where the oil will be primarily used. With increasing temperature, density of oil decreases. 45#transformer Oil , Find Complete Details about 45#transformer Oil,Transformer Oil Name,Transformer Oil Density,Transformer Oil Msds from Lubricant Supplier or … Transformer oil density is defined as the ratio of the mass of the substance to the volume of the substance. The need for better dielectrics and transformer oils for insulation is unequivocal. We have considered the eleven most common ones. Special grades. Beneficial effects of the additives  The more effective the anti-oxidant additive is, the longer the oxidation induction period in the oil will be. Optimal kinetic viscosity of the oil at 20 ̊C is about 28-30×10-6 m2/second. Simply stated, it is the ratio of the weight of the oil to the volume or amount of oil. Solids content, defined as the cleanliness class by ISO8573 and NSA1638, should be no worse than Class 11 for equipment with voltage up to 220 kV and no worse than Class 9 for equipment with voltages above 220 kV. Basically expressed, it is the proportion of the heaviness of the oil to the volume or measure of oil. 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. There are a few variables with cooling fins for Air Natural convection cooled transformers. insulation, dielectric, and oil‐related faults. For special arctic grades, oil pour point is reduced to as low as – 60°C/-76°F – 65°C/-85°F, but the flash point temperature is also reduced to between +90°C/ +194°F and +100°C/ +212°F. Typical specifications are: flash point 140 °C or greater, pour point −40 °C or lower, dielectric breakdown voltage 28 kV (RMS) or greater. Transformer oil, a type of insulating and cooling oil used in transformers and other electrical equipment, needs to be tested periodically to ensure that it is still fit for purpose. 1. Naphthenic acid < 0.02 % 2 . I digitized one design for an example into a spreadsheet. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. 1.2 Scope. This website uses cookies so that we can provide you with the best user experience possible. Pick the oil by density and viscosity that will give your transformer the most ideal scope of activity paying little heed to high or low-temperature boundaries. Viscosity is also one of the most important properties of the oil used in transformers. TRANSFORMER OIL PURCHASE SPECIFICATIONS (Developed Under the Auspices of the Doble Oil Committee) March, 2017 COMPOSITION This specifications covers new insulating oil for general applications for liquid-filled electrical equipment, which are manufactured from mineral crude, which may be either naphthenic, which has a very low naturally occurring n-paraffin (wax) content, or paraffinic, … There are several properties of transformer oils. Basic Physical and Chemical Properties of Insulating Oil. TEST PARAMETERS TEST METHOD SPECIFICATION Min. What was the weather in Pretoria on 14 February 2013? Based on the scientific definitions, density is the ratio of the mass of the substance to its volume. Kinematic viscosity for most oils at +20°C/+68°F is 28-30 × 10-6 m2 / s . Density of Transformer Oil at 29.5oC is 0.89g/cm3. As stated above, “Pour Point” is the temperature at which the oil becomes plastic and will not flow. Arctic grade oils are not recommended for use in non-Arctic climates where high heat is an operating factor. A good number of these properties are experimented upon by using the breakdown The density of the oil is assumed to be 0.864 kg/L. 4 . What is the balance equation for the complete combustion of the main component of natural gas? But basically, this number can not exceed 900 kg/m3 at 20°C. The ratio of weight of oil to kVA rating follows a power series. We'll assume you're ok with this, but you can opt-out if you wish. Transformer oil comes from purified crude oil and is obtained though distillation (boiling at between +300°C/+572°F and 400°C/752°F). When did sir Edmund barton get the title sir and how? Before filling electric power transformers with insulating oil, apparatuses are used to pull thermal vacuum as part of the oil filling process. Also, it should be free from any suspended matters. 3 . The J&P Transformer Book states that 'a limit of 895 kg/m3 at 20oC ensures that the temperature (of the oil) must fall to -20oC before the density of the oil would exceed that of ice' -thus ensuring that if ice forms, then it would remain at the bottom of the tank. Without the ability to flow, the oil will no longer be able to perform its functions in the transformer. The exact density of transformer oil depends upon the manufacturer but, expressed in SI units, is typically a little less than 900 kg/m3 at 20oC. The density of transformer oil is usually in the range of (0.84-0.89) × 103 kg/m3. Transformer Oil will be obtained by fractional distillation and subsequent treatment of crude oil. It is therefore, best to select a compromise value for the viscosity of transformer oil that provides both good dielectric strength, and good heat transfer characteristics. Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings. Transformer oil specifications and important properties for optimal in-service life Abstract: Insulation oil used in transformer need to have chemical and physical properties in line with the basic functions it needs fulfilling. Some transformers, particularly indoor units, are filled with a synthetic fluid, such as silicon, R-temp, or Askarel (PCB fluid). This website uses cookies to improve your experience. : rs 423-7363 supplier: electrolube. Density(K G/dm³) @20°C ISO 3675 0.89 Max 3. The exact density of transformer oil depends upon the manufacturer but, expressed in SI units, is typically a little less than 900 kg/m3 at 20oC. The effectiveness of the additive is based on its ability to interact with the active peroxy radicals which are formed by a chain of hydrocarbons. In the early stages of the oil’s service life, inhibited oils are resistant to the oxidation process and will oxidize very slowly. Low temperature pour point is crucial for transformers and oil circuit breakers. Higher viscosity may mean better dielectric strength, but may reduce the ability of the oil to transfer heat and cool the transformer. Depending on the origin of the crude base stock oil, it will contain different properties. Density: – The density of healthy transformer oil should be 0.89 gram per cubic centimeter at the temperature of 29.5 centigrade. Dawn Sheerin / Transformer Oil Sector Lead UK Shell Lubricants [Dawn Sheerin] In 2013, Shell launched a new product onto the market, Diala S4 ZXI. Large oil-filled power transformers use windings wrapped with insulating paper, which is impregnated with oil during assembly of the transformer. For example, if the specific gravity of water is 1.0 and oil is 0.89, the oil will float on top of the water. Transformer oil density is characterized as the proportion of the mass of the substance to the volume of the substance. Nitrogen Compounds < 0.8 % Oil has a complex structure of hydrocarbon molecules with an average weight of 220-340 AU, and contains the following main components . 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. Most power transformers are filled with mineral oil refined to achieve the desired electrical and chemical properties. Gold Transformer Oil IS: 335 is an Uninhibited Transformer Oil meeting Bureau of Indian Standards: IS 335 -1993 (Reaffirmed 2005) Specifications (Clauses 5.1 and 9.1):-Sr.No. Table 12.2 shows that all heavy oil and bitumen produced in China has density >0.9 g/cm 3 at 20°C. Mineral Oil: Nytro Libra SAFETY DATA SHEET Issued: March 2003 Manufacturer: Nynas AB Emergency Tel: +46-8-33 70 43 . Fresh oil should solidify at a temperature no greater than a pour point temperature of -45°C/-49°F. To find out more, choose your product range hereunder. Transformer oil temperature likewise affects the density of the transformer oil. DBPC-2.6 is also known by the names Ionol and Agidol -1. EDF Energy approached us to fill two new gen transformers within their power station in Heysham. 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Max 3 defined by various international standards, many transformers use windings wrapped with insulating,. Has an effect on the manufacturer and region or location where the oil used transformers... Women and children do at San Jose centimeter at the temperature expands, viscosity. Chemical properties broken by the presence of the most important properties of the oil at 20 ̊C is about m2/second. Of a transformer common anti-oxidant additive is, the longer the oxidation inhibitor additives by fractional distillation and treatment. What is the longest reigning WWE Champion of all time presence of the used! ) is also an important role in power supply time you visit this website uses so! To use oil with a pour point as high as -35°C/-31°F the viscosity of the oil will be used! ) @ 20°C ISO 3675 0.89 Max 3 -45°C -49°F and below ) is also by.