The DGA of Transformer oil was done regularly and no abnormality was indicated till Oct 2007. BDV means break-down voltage, also named as Dielectric Strength Valve. testing of transformer oil, the oil samples selected are in such a way that the importance of testing can easily be explained and can be conclusive based on the oil parameters studied. Many of the transformers in the United States that have been in-service for more than 30 years still contain oil that is in good condition. • World’s Leading Reclaimer of Transformer Oil • Over 1 Billion Gallons Processed. Alibaba.com offers 165 ppm meter for transformer oil products. The number next to each test is the ASTM (American Society for Testing and Materials) reference. What is BDV Test in transformer? Presentation to: Western Mining Electric Association 2. Our experienced personnel, utilizing new and state of the art equipment, provide a broad range of fluid tests and diagnostic interpretation to maintain and extend the life of your transformers … In addition, long-term stability of sensor performance was observed, confirming that the Al 2 O 3 passivation layer and packaging were effective to enhance the robustness of the sensor in an oil environment. Oil level indicator operation : … Insulating oil – DGA, physical, and chemical tests : Anually. The Transformer Oil Breakdown Voltage Test Set supplied shall be preprogrammed atleast in accordance with the latest editions of the standard test methods specified in IEC 60156 and amendments thereof. For an oil sample originating from a 33kV transformer, the water content is normally considered to be a little high when it reaches 25mg/lg(ppm) and too high when it reaches 30mg/kg)ppm). MORGAN TM SCHAFFER Transformers The Inside View Transformer Tests Oil tests and on-line monitoring can increase transformer life expectancy By: William Morse – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 470ebb-NzhhZ Polychlorinated Biphenyls and similarly related compounds were quickly found to be detrimental to the environment and over the years since have been phased out of use. This test indicates aging, quality and the presence of contaminants in the transformer oil. PPM Testing offers comprehensive transformer fluid testing to the electrical utility industry. TRANSFORMER OIL TEST PACKAGE (As per IS: 1866) 22 23. Different gases dissolved in the oil indicates different kinds of thermal and electrical stress occurring inside the transformer. The transformer oil test results should be supplied to the contractor, and the cost of purification should be based on the standard for finished product, a transformer oil reading: * TOTAL WATER CONTENT : Maximum 10 ppm (mg/Kg) ASTM D-1533 Insulating oil. This valuable data would be very useful to Indian Standards or other ... Furanic Compound of 6227 ppm, 4453 ppm, 11590 ppm, and 6400 ppm Dissolved gas analysis (DGA) is the study of dissolved gases in transformer oil.. Insulating materials within transformers and electrical equipment break down to liberate gases within the unit. Originally used for their excellent electrical characteristics and not being flammable. PCB’s: Polychlorinated Biphenyls. Normally the BDV value for Transformer oil shall be more than 70 kV/cm and moisture content shall be less than 10 ppm. Color (D1500): Used to observe darkening of the oil by comparing it to previous samples of oil from the same transformer. CORPORATE OFFICE COLUMBIA PETRO CHEM PVT. The breakdown of electrical insulating materials and related components inside a transformer generates gases within the transformer. Along with the oil sample quality tests, performing a dissolved gas analysis (DGA) of the insulating oil is useful in evaluating transformer health. owner of a transformer manufactured before July 2, 1979, that contains 3 pounds of fluid other than mineral oil at an unknown concentration, while the transformer is in use you must assume it is a PCB Transformer, i.e., that it contains 500 ppm PCBs. If the result of the PCB testing is less than 2 ppm, in most cases an onsite reclamation of your oil can be performed. Top oil and winding thermometer. In this test the oil sample with all the fault gases dissolved is taken in a glass syringe and send to lab for analysis which identifies various gas ppm levels that are present in the insulating oil. Full testing, sampling and analysis; Heat vacuum oil purification plant If the PCB level of the oil is less than 2 ppm, in most cases on-site reclamation is recommended based on the customer’s preference. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. of CO gas in Transformer oil. Note : Dissolved Gas Analysis (DGA) test is conducted to ascertain the healthiness of Transformer and not of the Oil. Dexsil's first PCB (polychlorinated biphenyl) test kit, Clor-N-Oil 50, was introduced in 1983 and has become the standard for quick PCB screening of transformer oil in the field.In addition to the original 50 ppm kit, there are two other test options available: 20 ppm and 500 ppm. Moisture content in oil is measured as ppm (parts per million). The concept of relative saturation of water in transformer oil is not a new one and was originally championed by Frank Doble as early as the mid 1940s.Thus, this article discusses and details the relationship between RS and ppm. Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. When the fault is major, the production of decomposed gases are significant and they get collected in a Buchholz relay. Break Down Voltage Test and moisture content test. Transformer excitation current test : 5 years. If remedial action is required to the transformer oil, a recent PCB analysis is required in addition to the preceding testing. In both figures, where the current IEEE Guide C57.106 [3] has a 25 PPM limit for a 138 kV class transformer, readings varied from 15 to 50 ppm in Figure 1 and 10 to 60 ppm in Figure 2, solely based on the oil temperature. Marg, New Delhi - 110 001, India. Whenever a transformer undergoes abnormal thermal and electrical stresses, certain gases are produced due to the decomposition of the transformer oil. 11.4 Significance of Various Routine Tests : The significance of various routine tests such as Break Down Voltage Test, Test to find the Water Content, Resistivity, Di-electric Dissipation Factor (Tan ), Acidity, Interfacial Tension are described below. At site, two types of tests are conducted. BASIC FEATURES The Transformer Oil Tester shall be capable of measuring dielectric breakdown voltage of all The tests on these Transformers would be continued even after the study period and the data bank will be expanded each year. The following is a common list of common tests for transformer oil. Transformer Oil Testing 1. Inference of the oil test result 1. Inspection : Anually. Transformer oil. for determining transformer health. Knowing is half the battle, of course, so let’s dive in and talk about what this oil does and how it’s made and graded. 1. If only a Parts per Million (PPM) reading is used, it will vary to where even a wet transformer can give an apparent dry PPM result if the oil is cool enough. One is BDV Test i.e. Dissolved gas analysis (DGA) is the study of dissolved gases in transformer oil.It is also referred to as a DGA test. LTD. 1006, Navarang House, 10th Floor, K.G. A wide variety of ppm meter for transformer oil options are available to you, such as usage, power. BDV Test is an very important testing procedure for the insulation oils in transformer. Decision of hot oil circulation / drying out for improving dielectric properties by removing moisture from oil & solid insulation ( On the basis of Water PPM,, BDV) 3. 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. The fabricated sensor in a transformer oil showed excellent H 2 response (ΔV out = 62μV to 10 ppm and 4.71 mV to 2000 ppm). Table I – Dissolved gases in Transformer Oil (ppm) 13/09/06 22/10/07 08/04/08 Methane 58.5 75 87.41 Ethane 24.7 38 40.54 Ethylene 11.5 13 8.95 Acetylene 0 0 0 Propane + Propylene 35.2 79 87 Whatever you call it, this high temperature, high resistance oil is used in many of the things which keep our modern world afloat. About 89% of these are Testing Equipment, 1% are PH Meters, and 3% are Moisture Meters. water in transformer oil has been re-introduced over the past 15 years. Determination of moisture in the solid insulation ( on the basis of Ooman graph) 2. The distribution of these gases can be related to the type of electrical fault, and the rate of gas generation can indicate the severity of the fault. • World’s Largest Database of Test Records • 4,000,000 Customer Transformer Test Records. These limits vary depending upon the source of the oil sample. Power Transformers offers Transformer Oil testing, regeneration, recycling, purification and supply services for the full range of electrical transformers. Phone: (91 11) 2335 1147 / 48 There is one test however, also performed on the insulating oil of the transformer, which provides a means for diagnosing the operating condition of the electrical apparatus, namely DGA. PCB/Organic Chlorine Contamination. We have invested in the construction of industry leading infrastructure to allow us to service the full spectrum of requirements including:. The values of the dissolved gases are tabulated in Table I. 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