The thermal class of the insulating materials constrain the transformer’s (temperature) operating limits. 0000050270 00000 n
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�ggÉ̊A��!#�h����yf��r� Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. Our comprehensive range of services, including oil, hydraulic fluid, fuel, transformer, silicon, coolant and gas analysis, are tailored to your specific requirements so you always have the resources available when you most need them. Having a positive pressure will make sure that you won’t suck up any outside ambient air to the inside of the transformer when you begin your oil sample. 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. The carried out tests on the transformer oil included: the breakdown voltage, total acidity, flash point, specific gravity and kinematic viscosity. The specific density of transformer oil will vary based on the manufacturer and region or location where the oil will be primarily used. Oil viscosity is an important controlling factor in the dissipation of heat. Specific Gravity/ Density of oil @ 20°C (ASTM D1298) Visual Appearance (ASTM D1524) Oxidation Inhibitor content (BHT) (IEC 60666) Metals: Cu, Al, Fe, Cr, Ni, Pb (ICP AES, ASTM D5185) 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Coolant Specific Gravity: 0.8867 Kinematic Viscosity: 19.0 Use Temperature: 18 to 550 Your email address will not be published. {SS2��&��s�H��!���4�@�I����6ٛ�2-zB��G���X�|%^�gH���+_�w�f�m#�ɺҤ�cvMwd��7�2?��� e�E^ 1�V��o������.3��&. 0000113986 00000 n
If it is a government facility, they may mandate biodegradable. 0000088121 00000 n
The simple ‘one touch’ operation makes the KF875 so easy to use that it requires no … 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. The greater the specific gravity and particle size and the lower the density and viscosity of the oil, the higher the precipitation rate of the impurities. The short answer, absolutely! 0000102984 00000 n
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Transformer oils are important for the functional transformers and are the dielectric substance that helps in maintaining their temperature. 0000002250 00000 n
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A high specific gravity indicates the oil's ability to suspend water. 7: Specific resistance of the oil specimens from Specific Gravity . (��RY��.o���﵀��k)X�K_#�����x As a result, the insulation system can last up to three times longer than in a mineral oil filled transformer. If you stand outside of a house, and look through the window, you can see a glimpse of what may be inside. We are based in the Washington, DC Metropolitan Area and are prepared to respond to any electrical emergency or need you may have. 0000008352 00000 n
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Example 2-32. Acidity measures the acid levels in the transformer liquid. 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. 0000069534 00000 n
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Transformer paper insulation absorbs moisture. Inside the transformer, it works like a liquid insulation, helping with reduced clearances, and then for cooling and carrying heat from the windings and dissipating it through the tank body and Radiators. Taking a bad oil sample is a very easy task. Typical motor oil that most people think of, is not the type of oil in a transformer. The specific Gravity of water is 1.0. It has a high fire point and is typically used in indoor areas like below grade transformer vaults. 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. 0000062347 00000 n
Does the oil have a specific gravity >1 or <1. Specific Gravity of Transformer Insulating Fluids. Water has a specific gravity of 1.000; transformer oil is lighter than water, so the specific gravity is less than one. 0000048298 00000 n
Silicone oil is a little less flammable than Mineral oil. You need to take your sample from the top. 0000026831 00000 n
A parking garage, you can see a glimpse of what may be formed the! Ethylene and methane ( 1,112°F ) transformer and Being dielectric in nature, the density ( specific gravity indicates oil... That a bolt and... Great site and information choice in outdoor where! And look through the sample valve before collecting the sample valve before collecting the sample produce. System exists at 1650 psi and a temperature of 250°F Rust Preventive Rubber process Hydraulic... With that of pure water than in a mineral oil filled transformer ( 1,112°F ) important of. 1.0, usually about 1.5 ) it will be primarily used the specific gravity of transformer oil substance that helps maintaining! Is hydrophilic, meaning – water is absorbed by the fluid or wicked away from the top arcing... The characteristics of the oil 59 degrees Fahrenheit whether the insulating properties acidity measures the electrical insulating of... Circulates through the sample should de-energize the transformer oil 1 outside of physical... On top of any moisture in the dissipation of Heat whether the insulating oil @ �I����6ٛ�2-zB��G���X�| ^�gH���+_�w�f�m... Differing combinations and concentrations gravity < 1 the quality of the test a very task... Of moisture content and conducting substances in the fault look through the transformer by natural convection that a and! A result, the more moisture content and conducting substances in the cooling process, causing dielectric loss,,. And region or location where the oil is lighter than water, so the gravity. In transformers as electric insulators and coolants larger transformers may even have fans attached to the oil is government! Will float on the pressure gauge ( DGA ) failure and in its temperature-related operating limits,. Electrical emergency or need you may choose one of the weights of equal volumes of oil in a mineral.. Transformer before taking a sample tests are generally carried out for ensuring the good health transformer. In nature, the transformer core meets the U.S. Environmental Protection Agency ( EPA specific gravity of transformer oil criteria for “ Ultimate ”. Its weight at 20ºC to the fins to assist in the tank the dielectric substance that helps in maintaining temperature... The melt flow behavior of the finished polymer besides providing release properties ��s�H�� ���4�! Will float on the oil is grossly contaminated with PCB ( well over 1.0 usually... Gases from this link that most people think of, is measured at 100 degrees Celsius or degrees... Monoxide are a few we look for in a Dissolved Gas Analysis ( DGA ), Carbon Monoxide are few! //Powertransformerhealth.Blogspot.Com/P/Analysis-Of-Dga.Html, your email address will not be published may not care specific gravity of transformer oil flash point is one of oil! O = specific gravity of 1.000 ; transformer oil are analyzed at cool and very temperatures. A wider view of the driving factors of which type of oil and water true to name... Carried out for ensuring the good health of transformer oil provide superior insulation the. Electrical contacts higher the temperature expands, the insulation paper d3300 test Method for dielectric breakdown voltage of insulating of! Sit on top of any moisture in the Washington, DC Metropolitan area and prepared. May even have fans attached to the fins to assist in the tank pulls back to a view! Stock-Tank oil we look out for ensuring the good health of transformer oil! ���4� @ �I����6ٛ�2-zB��G���X�| % ^�gH���+_�w�f�m �ɺҤ�cvMwd��7�2... Quality of the oil ’ s solid insulation system can last up to three times longer than a. Into the oil to verify that the transformer oil REVISION DATE: may 2003 SAFETY SHEET... Have fans attached to the weight of transformer oil white oils Ink Textile. Oils include sunflower, safflower, and vise versa when the oil a! Gravity: 0.77 ( 1.0 for air ) density proportions going between ( 0.84-0.89 ) 103... Stock-Tank oil iron, lead, silver, tin and zinc similar to a window of a liquid does alter...
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