Different gases dissolved in the oil indicates different kinds of thermal and electrical stress occurring inside the transformer. Determination of moisture in the solid insulation ( on the basis of Ooman graph) 2. TRANSFORMER OIL TEST PACKAGE (As per IS: 1866) 22 23. The number next to each test is the ASTM (American Society for Testing and Materials) reference. 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). PCB’s: Polychlorinated Biphenyls. The breakdown of electrical insulating materials and related components inside a transformer generates gases within the transformer. The DGA of Transformer oil was done regularly and no abnormality was indicated till Oct 2007. About 89% of these are Testing Equipment, 1% are PH Meters, and 3% are Moisture Meters. The following is a common list of common tests for transformer oil. 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. 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. Transformer Oil Testing 1. Dissolved gas analysis (DGA) is the study of dissolved gases in transformer oil.It is also referred to as a DGA test. 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 … This test indicates aging, quality and the presence of contaminants in the transformer oil. 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. 1. CORPORATE OFFICE COLUMBIA PETRO CHEM PVT. 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. Full testing, sampling and analysis; Heat vacuum oil purification plant What is BDV Test in transformer? 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. Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. 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. Normally the BDV value for Transformer oil shall be more than 70 kV/cm and moisture content shall be less than 10 ppm. Oil level indicator operation : … of CO gas in Transformer oil. If remedial action is required to the transformer oil, a recent PCB analysis is required in addition to the preceding testing. BASIC FEATURES The Transformer Oil Tester shall be capable of measuring dielectric breakdown voltage of all 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 A wide variety of ppm meter for transformer oil options are available to you, such as usage, power. This valuable data would be very useful to Indian Standards or other ... Furanic Compound of 6227 ppm, 4453 ppm, 11590 ppm, and 6400 ppm Alibaba.com offers 165 ppm meter for transformer oil products. Presentation to: Western Mining Electric Association 2. Inspection : Anually. Color (D1500): Used to observe darkening of the oil by comparing it to previous samples of oil from the same transformer. Moisture content in oil is measured as ppm (parts per million). LTD. 1006, Navarang House, 10th Floor, K.G. Note : Dissolved Gas Analysis (DGA) test is conducted to ascertain the healthiness of Transformer and not of the Oil. 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. 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). Whatever you call it, this high temperature, high resistance oil is used in many of the things which keep our modern world afloat. Marg, New Delhi - 110 001, India. When the fault is major, the production of decomposed gases are significant and they get collected in a Buchholz relay. Dissolved gas analysis (DGA) is the study of dissolved gases in transformer oil.. 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