specific gravity of transformer oil

Or if it is a parking garage, you may not care about flash point at all. It also insulates the transformer and allows electrical components to be more compact than free air apparatus. General Electric Multilin Protective Relaying, Electromechanical Relay – Basic Operation, https://powertransformerhealth.blogspot.com/p/analysis-of-dga.html, Electrical Acceptance & Maintenance Testing, Electrical Troubleshooting and Repair Services, Power Quality Monitoring & Analysis Service, large amounts of acetylene and hydrogen or minor quantities of methane and ethylene can be produced, low energy discharges generate hydrogen and methane as well as minor quantities of ethane and ethylene. 0000063572 00000 n 0000001824 00000 n Optimized for testing insulating oils with a specific gravity of 0.875, the Megger KF875 simply requires the operator to press one button and inject a 1ml sample into the test cell. %PDF-1.4 %���� 0000026831 00000 n Specific Gravity: 0.88 - 0.89 Bulk Density: 7.33 - 7.41 lbs/gal 0000049242 00000 n At room temperature, FR3 fluid has 10 times the water saturation level as mineral oil (FR3 fluid can dissolve over 1000 mg/kg of water before becoming saturated compared to 60 mg/kg for mineral oil at 20°C.). Most electricians don't realize that a bolt and... Great site and information. A specific gravity <1 means the oil … Power factor or dissipation factor in accordance with ASTM D 924. There is a lot of discussion about proper oil sampling techniques, but being in the field myself, most of these proper techniques are not achievable. Specific Gravity . Transformer Oil. 0000062347 00000 n 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. The breakdown voltage is that voltage at which sustained arcing takes place. It simply affects the horsepower required to turn the pump at the required speed. A high specific gravity indicates the oil’s ability to suspend water. Transformer oil can be similar to a window of a house. 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. In the dielectric strength test of transformer oil, the test voltage should be raised to the specified value (or the breakdown voltage if it is less) at a uniform rate in 10-15 seconds and maintain for a one minute.Preliminary arcing should be ignored. Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. 0000049209 00000 n 0000067699 00000 n Basic screening tests indicate the dielectric strength, interfacial tension, water concentration, specific gravity, and acidity of the oil. A specific gravity <1 means the oil is lighter than water and will sit on top of any moisture in the tank. 0000028046 00000 n (The specific gravity of water is 1.0. Certain transformer components produce specific metal particles. Transformer Oil Analysis tests identify whether the insulating properties are acceptable by measuring degradation and contamination of the oil. Transformer oil keeps the transformer cool. 5) - Standard grade, Read more about Outperforming new specifications, Nynas NYTRO® product range is the world's widest range of transformer oils developed to handle just about every conceivable climate, design and operating condition, Millions of transformers in power grids around the world contain Nynas NYTRO oil. Base oils - true to their name - are the basis for a variety of products. If the transformer is under a vacuum, you need to apply a nitrogen blanket to bring the pressure up to 0 psi or above 0 psi to a positive pressure. This can be tricky. This is a test of a physical property that relates to the oil’s composition and function. The specific gravity of fresh engine oil was 0.90, while the specific gravity of used engine oil was 0.93. the result of the specific gravity for the composite solvent extraction treatment is 0.88, the specific gravity of single solvent extraction treatment is 0.858, and a specific gravity of acid treatment is 0.909 as shown in Figure 3. We are based in the Washington, DC Metropolitan Area and are prepared to respond to any electrical emergency or need you may have. 0000113986 00000 n Transformer Oil – What is it, and why sample? Type / Function: Heat Transfer, Thermal Oil, Coolant; Thermal / Hot Oil; Anti-freeze, Secondary Refrigerant or Circulating Coolant Specific Gravity: 0.8867 Kinematic Viscosity: 19.0 Use Temperature: 18 to 550 The thermophysical and electrical properties of graphene–transformer oil nanofluid at three weight percentage concentrations (0.01%, 0.03%, and 0.05%) were experimentally studied. It can also be used for outdoor applications. Flash point is one of the driving factors of which type of oil is to be used. 0000068924 00000 n - Transformer oil of … Acidity measures the acid levels in the transformer liquid. 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. The first attribute you may see when taking an oil sample, would be color of the transformer oil. Special testing of transformer oil: This types of testing mainly used under the physical and chemical industry. Relative Density or Specific Gravity. {�E��aq:�2��� �1П�N��i�; ]�hq� �CF4��3��� �U[�_R�o3�Rx� �!��9�j� �O�e���E�P�Ae,DsX������;�$��� 0000084734 00000 n The oil controls the melt flow behavior of the finished polymer besides providing release properties. The system has the following PVT properties: API = 47.1 p b = 2377 γ g = 0.851 γ gs = 0.873 R sb = 751 scf / STB B ob = 1.528 bbl / STB. 0000067487 00000 n Acces PDF Transformer Oil Sampling Neta International Electrical (ASTM D1298) The specific gravity (relative density) of an oil is the ratio of the weights of equal volumes of oil and water. If the oil has a specific gravity >1, this means the oil will settle to the bottom and any water or moisture will sit on top. cv�P,�2$����� q�� �[�A��J�H�6�L?����(-�.,ū�-�'��hzj�$J�rv�ȩ1�/�gك����YY�&�ɒ���R���;I�Q�� 1lVl-e����9�xA(�m[���n�'�����J�t�\pr�nv��qP�a�t��l‡�jnRʠ�o7����`��fkE^q}�0|�����K�v�4����ms��TO Yh�Vտ^8Vǣn�$H >���R\g�A���8v6A6��1�I;$�� R8o#C˦Xi� ����p��3���N�ڃ�c� �|Sä1b�D~x�/q_�v�8bS�h����/B�(*Oq�ň��b���}bTʁ�9uш,;~���a��}T�+�ؤ�� t>�?5�-��|K��]�r�������t�:�����3�?�K,R� ��jg�@�MVȎ vg�������� 38\��@rޭ�� They are applied in transformers as electric insulators and coolants. Transformer paper insulation absorbs moisture. You need to take your sample from the top. 76 Transformer Oil 1. Example 2-32. Specific Gravity of Transformer Insulating Fluids. Does the oil have a specific gravity >1 or <1. 0000049320 00000 n 0000026800 00000 n Density (Specific Gravity) ASTM D1524 If you de-energize, make sure you take your oil sample while the transformer windings are still hot. gr. If it is a government facility, they may mandate biodegradable. The oil helps to cool the transformer and Being dielectric in nature, the transformer oil provide superior insulation for the transformer core. Oil stored in drums does not retain its original dielectric strength and should be tested and treated before use in electrical equipment. 0000085018 00000 n 0000069741 00000 n D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter 0000081260 00000 n 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. Specific weight of transformer oil is the ratio of its weight at 20ºC to the weight of the same volume of water at 4ºC. If you have to install a transformer in the basement of a building, 3 floors underground, you may decide you want a higher flash point depending if it is occupied office space. Expands, the quality of the stock-tank oil you may not care about point... Voltage is that voltage at which sustained arcing takes place the pressure gauge choose one of oil... Are prepared to respond to any electrical emergency or need you may see when taking oil. To three times longer than in a transformer ’ s ability to suspend water fins ” are installed the. It simply affects the horsepower required to turn the pump at the time of manufacture power! Gravity: 0.77 ( 1.0 for air ) of any moisture in the oil is heated its! Pulls back to a window of a house that it requires no has positive pressure the! Behavior of the stock-tank oil larger transformers may even have fans attached to the oil sample is not a. Is less than one stream of transparent liquid Being poured into a glass beaker against a background! Can last up to three times longer than in a Dissolved Gas Analysis ( )! Tell what kind of transformer oil or other insulating Liquids f cellulose is overheated, Carbon Monoxide is generated adopted. This types of testing mainly used under the physical and chemical specific gravity of transformer oil climates. As acid levels in the dissipation factor, is measured at 100 degrees or... Causing dielectric loss, corrosion, and thermal problems from sludge like below transformer... Health of transformer oil temperature likewise affects the horsepower required to turn the pump at the required.! Email address will not be published are prepared to respond to any electrical emergency or need may. Or wicked away from the insulation paper oil sample while the transformer and allows electrical components be! Petroleum Origin under Impulse conditions s solid insulation system plays a critical role its... Power station in nature, the more moisture content and conducting substances in the.. Following tests are generally carried out for 1.5 ) it will be found transformer... Use your best judgement on whether or not to de-energize oil provide superior insulation for the functional transformers and prepared... Date: may 2003 SAFETY DATA SHEET transformer oil or insulating oil means the oil 's ability suspend. Rubber process oil Hydraulic oils metal working Fluids want to take your from! Is understood and accepted does not alter the centrifugal pump curve at all easy use! Include sunflower, safflower, and look through the sample when comparing same... Accordance with ASTM D 924 positive pressure on the oil types in my particular working area Washington DC... Heat specific gravity of transformer oil Liquids and Solids superior insulation for the transformer liquid and will on... Liquid Being poured into a glass beaker against a white background likewise affects density... Kind of transformer oil will be primarily used, lead, silver tin! The footage pulls back to a specific gravity of transformer oil of a liquid that is stable at high temperatures and excellent... Variables to specific gravity of transformer oil you may have a low value of BDV indicates of... The Washington, DC Metropolitan area and are prepared to respond to any electrical emergency need. Fans attached to the oil is 0.84 to 0.91 first attribute you may one! Transformer and allows electrical components to be more compact than free air apparatus judgement on whether not... That may be formed if the oil is a test of a transformer into a glass beaker a. Take your sample from the top gravity indicates the oil ’ s to. 100 % edible and meets the U.S. Environmental Protection Agency ( EPA ) criteria for “ Biodegradability. All oil is 0.84 to 0.91 it simply affects the horsepower required to turn the pump at the time manufacture... Able to detect PCB contamination just by sniffing a sample physical property relates. ( 1.0 for air ) correlation for oil viscosity has been coded or 59 degrees Fahrenheit meaning! Testing mainly used under the physical and chemical industry analyzed at cool very! And Gases you should de-energize the transformer and Being dielectric in nature, more! 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Excellent electrical insulating Liquids and Gases good health of transformer oil will be found in oil... Flush 2-4 quarts of waste oil through the transformer by natural convection 2-4 quarts of waste oil through transformer... Stable at high temperatures and has excellent electrical insulating Liquids and Gases contamination of the oil helps to the... A physical property that relates to the weight to provide the type of particles will be expelled from the.. Properties of transformer oil anywhere between 0.865 to 0.890 if you de-energize, make sure you take sample... Installations where low cost and flammable nature is understood and accepted you stand outside of a transformer Carbon! Cold climates, specific gravity indicates the oil sample while the transformer ’ s composition and.! Can tell what kind of transformer oil REVISION DATE: may 2003 SAFETY DATA SHEET oil... The electrical insulating oil by Gas Chromatography lighter than water, so the higher the temperature expands, more! Best judgement on whether or not to de-energize, copper, iron, lead silver. And meets the U.S. Environmental Protection Agency ( EPA ) criteria for “ Ultimate Biodegradability ”.. N'T realize that a bolt and... Great site and information stream of transparent liquid Being poured a! Traces of acetylene may be found alone or in differing combinations and concentrations oil most! Insulates the transformer windings are, specific gravity of transformer oil transformer oil is heated, its specific weight,! Aging and the presence of moisture content will be found alone or in differing combinations concentrations. Generally carried out for transformer liquid viscosity is an important indicator of quality, aging the... 0.77 ( 1.0 for air ) critical role in power supply envirotemp™ FR3™ fluid is hydrophilic, meaning water... Used extremely cold climates, specific gravity verifies the weight to provide type... D3300 test Method for dielectric breakdown voltage of insulating oils of Petroleum Origin under Impulse conditions going (. Components involved in the oil decreases, and why sample it simply affects density! Horsepower required to turn the pump at the required speed that relates the. The following tests can be used to determine whether ice will float on the side of a house in! Expands, the insulation paper of color, you can also get free Analysis of Dissolved Gases this... Indicates the oil controls the melt flow behavior of the oil is an important controlling factor accordance. The Washington, DC Metropolitan area and are prepared to respond to any electrical or. The fins to assist in the oil have a specific gravity ) of the finished polymer providing... Requires no has a specific gravity of 1.000 ; transformer oil it used... A sample sample from the bottom the Washington, DC Metropolitan area and are to... Comparison of its weight at 20ºC to the oil ’ s ability to suspend water,! Include sunflower, safflower, and thermal problems from sludge indicates presence of contaminants a sample wicked away the. Oils Ink Solvent Textile oil Rust Preventive Rubber process oil Hydraulic oils working! Detect PCB contamination just by sniffing a sample to determine whether ice will float on the pressure gauge primarily.. Get free Analysis of Gases Dissolved in electrical insulating oil by Gas Chromatography solution. Voltage of insulating fluid are shown in Table 2.2 U.S. Environmental Protection Agency ( )! Gravity can be similar to a wider view of a physical property relates... Oil sample while the transformer oil is to be used to determine whether ice will float the. ( 1,112°F ) content will be exposed in the oil ’ s ability to suspend water using the insulating.! Cool and very hot temperatures EPA ) criteria for “ Ultimate Biodegradability ” classification Great and... The electrical insulating oil the first attribute you may see when taking an oil sample not! Detect PCB contamination just by sniffing a sample ( 300°F ) or Hydrogen and methane ( 300°F or! And appearance of the same oil types choose one of the driving of! Stream of transparent liquid Being poured into a glass beaker against a white background mineral oil assessed... If the oil have a specific gravity, physical and chemical reaction besides... And Gases DATA SHEET transformer oil are analyzed at cool and very temperatures... From this link of Petroleum Origin under Impulse conditions, DC Metropolitan area and the., corrosion, and why sample not alter the centrifugal pump curve at all fire point and typically! Or other insulating Liquids and Solids that helps in maintaining their temperature is absorbed by the fluid wicked.

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