For mineral oil, a generally accepted maximum moisture content is 35 ppm. We have invested in the construction of industry leading infrastructure to allow us to service the full spectrum of requirements including:. Dissolved Gas Analysis is the single most important test performed on oils from transformers. A portion of the insulation may deteriorate until it can no longer contain the stress of the electrical conductor. Regular monitoring of the oil’s quality and condition is a part of the process of servicing electric power equipment. It also insulates the transformer and allows electrical components to be more compact than free air apparatus. Testing MIDEL 7131 and MIDEL eN. The breakdown voltage is that voltage at which sustained arcing takes place. Measurements are made using high-performance liquid chromatography (HPLC). explore. Our labs cover the following: PCB in Oil per Gas Chromatography ppm: Neutralization (Acid) number: D974: New transformer oils contain practically no acids. This test will be performed when your power transformer cooling system is an oil type. Transformer oil acts as an electrical insulating media and helps protect the components. Furan measures the degradation of cellulose paper. FUNCTION INTRODUCTION 1. Inspection & Sampling These services are performed by skilled and experienced transformer specialists, using … If you disable this cookie, we will not be able to save your preferences. Top oil and winding thermometer. It is well known that regular oil analysis is useful in monitoring the condition of engines, turbines and other oil lubricated equipment. That means we have the capability and capacity to provide effective, accurate test results quickly. Find here Transformer Oil Test Kit manufacturers & OEM manufacturers India. 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. Designed by experts, these Oil Test Sets are subjected to provide complete satisfaction to the clients. RSYJ-80 Insulation Oil Dielectric Strength Tester AC 0~80kV Output Voltage. New transformer oils contain practically no acids. Measures the presence of soluble contaminants and oxidation products in transformer oil. Sampling for Dissolved Gas Analysis (DGA) requires a special sampling syringe, which ALS can help provide. So, insulation overheating measurement is also transformer oil testing methods. SDMyers has the largest transformer oil testing lab in the world, with packages that test for every known fault condition. Working with MVA means you have selected a company experienced in all aspects of the transformer life cycle: from installation, to oil testing and diagnostics, to field repairs and oil maintenance. Transformer oil testing consists of measuring breakdown voltage and other physical and chemical properties of samples of the oil, either in a laboratory or using portable test equipment on-site. Transformer oil acts as an electrical insulating media and helps protect the components. As the insulating materials in a transformer break down due to thermal and electrical stresses, gaseous byproducts are formed. Special Tests of transformer include. RSDDG Switchgear Testing Equipment for Current Load Test and Temperature Rise Test. If the oil is fresh, the lowest allowable breakthrough voltage is 30 kV. 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. Water and gases are very damaging to your transformer insulation system and are two main cause of the oxidation process and oil aging process. Breakdown Voltage BDV Testing of Transformer Oil. For more information regarding transformer oil testing you can read our following article: Transformer Oil Testing: Types, Methods and Analysis. If the purity and quality standards are followed, the equipment will be less likely to experience failures and downtime and unscheduled maintenance and repair costs. Transformer oil is crucial in the cooling process of a transformer. At Oil check we have the capacity to test oil from an aged transformer whether it be for maintenance, checking for any carry over after an oil change, disposal or refurbishment for such PCBs; ensuring that your equipment is compliant with the European Directive 96/59/EC. Furan test is used to determine the life of a transformer and condition of transformer oil in transformer oil. Used to observe darkening of the oil by comparing it to previous samples of oil from the same transformer. Transformer testing is done for confirming the specifications and performance of an electrical power transformer. Contamination of the oil is exhibited by poor transparency, cloudiness, or the observation of foreign particles. The transformer turns ratio test is used to make sure that the ratio between the … The oil’s flashpoint and the oil’s setting point are two indications of the general fire safety of the oil and the oil’s ability to operate in adverse temperature conditions both hot and cold. A low resistivity reflects a high content of free ions and ion-forming particles in the insulating oil, and normally indicates a high concentration of conductive contaminates. Transformer oil analysis is essential in accessing where on the system individual transformer units will likely fail. Transformer Oil Testing Methods are key part of any maintenance program. However, the high energy required to produce an arc will cause all combustibles to be elevated. The acid number is expressed as milligrams of KOH required to neutralize all acids in a gram of oil and indicates the degree of oil aging. If a transformer is overloaded for a long period of time, the deteriorating condition of the cellulose will shorten the life of the transformer. Testing of transformer oil is mandatory in yearly once for its maintenance. Identifies any dissolved metals that could originate from overheating or arcing and a portion of the particulate metals that may originate from mechanical wear. Identifies various gas ppm levels that are present in transformer insulating oil. Some transformer oil tests can be carried out in the field, using portable test apparatus. 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The byproducts are characteristic of the type of incipient-fault condition. If a proactive approach is adopted based on the condition of the transformer oil, the life of the transformer can be extended. Transformer oil has to be tested to make sure that the performance and efficiency of the transformer are good. Transformer Oil Testing. Title: Microsoft Word - TROILANA.DOC Author: User Created Date: 6/15/2005 8:47:19 AM Transformer oil testing is just like a blood test in the human body. The “dielectric breakdown test” is calculated as an average of five breakthroughs achieved in a standard discharger with two electrodes submersed in the oil at 2.5 mm distance from each other. The “screen test” is a collection of physical, electrical and chemical transformer oil testing methods. For mineral oil, the power factor of new oil should not exceed 0.05 percent at 25 degrees C. Determines the density, relative density (specific gravity), or API gravity of transformer oil by use of hydrometer at a reference temperature. Transformer oil test methods include ASTM, BS,and other recognized transformer oil analysis testing procedures. Transformer excitation current test : 5 years. Transformer oil testing is one of the important parts of a power transformer.This test will be performed when your power transformer cooling system is an oil type. Actions that can be taken once a thermal gas problem is detected would depend on the severity of the problem. Remove a sample of insulating transformer oil in accordance with ASTM D-3613 and test shall be performed for dissolved gas analysis (DGA). Its use to call transformer oil and it a little bit pricey. This test does not measure the water content in the transformer paper insulation. There are various factors in testing the oil and those are breakdown voltage, its properties, and many others. Manufacturer of Transformer Oil Test Kit [BDV] is engaged in the manufacturing of the Oil Test Kit, which are known as the microprocessor based test equipment. Please contact Intertek for more information. Moisture content in oil lowers the insulating system dielectric strength and allows flashover that can damage a transformer. Dielectric breakdown voltage; e.g., D 877, ASTM D1816, Oxidation inhibitor content; e.g., ASTM D2668, Polychlorinated biphenyls content; e.g., ASTM D4059, Relative density (specific gravity); e.g., D 1298, ASTM D1524. This early warning system can allow maintenance management to identify maintenance priorities, plan work assignment schedules, arrange for outside service, and order necessary parts and materials. Oil Tests . In general, an increased dissipation factor means degradation of the oil’s dielectric capabilities. Therefore, it is suggested that they all be performed. It is therefore, essential to the life of the transformer to periodically monitor the condition of the insulating oil. Inspection : Anually. Open all the valves of each accessory and component to the main body, so that all accessories except the oil conservator and gas relay (including the cooler and radiator) are connected to the transformer for vacuum pumping. Transformer Insulating Oil Test Methods (ASTM) A table of the most common ASTM … To improve the cooling process, radiators or “fins” are installed on the side of a transformer. An annual DGA is the most important test for liquid insulation. Power factor Oil Filtration Machine. 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. Pour Point of Transformer Oil It is the minimum temperature at which oil starts to flow under standard test condition. In addition, dissolved gases are extracted from the oil sample, separated, and quantified in a gas Chromatograph. Oil level indicator operation : 5 years. ALS can be a partner to help maximize your equipment reliability performance. Our laboratories in Australia maintain ISO and NATA certification for quality assurance and expertise. Acidic sludge forms in contaminated oil and aggressively attacks the cellulose insulation and reacts with the metals of the transformer’s other internal components. Transformer LifeCycle Management 'ZERO' Breakdown | NO Production Loss FIELD SERVICES. The byproducts are characteristic of the type of incipient-fault condition. This early warning system can allow maintenance management to identify maintenance priorities, plan work assignment schedules, arrange for outside service, and order necessary parts and materials. It also insulates the transformer and allows electrical components to be more compact than free air apparatus. Servicing the oil before it becomes aggressive against the solid insulation is the key to extending the service life of your transformers. Get Contact details & address of companies manufacturing and supplying Transformer Oil Test Kit across India. It is certified to ISO/IEC 17025 standard for chemical and biological testing and is as established as the transformer plant itself, having been in continuous operation for > 30 years. All our transformer oils are tested thoroughly to ensure they are capable of meeting these demands. Our Transformer Oil Testing lab is NABL accredited. In a used oil it measures the amount remaining after oxidation has reduced its concentration. Care should be taken when sampling transformer fluid and should be performed by a trained operator. Sudden pressure relay . When arcing occurs in the area of the windings, the usual result is de-tanking of the transformer, and a rewind conducted. A larger quantity of oil is needed for these tests. Dielectric strength is one of the most important indications of oil stability and this is often the first test performed. Huazheng Electric Manufacturing (Baoding) Co.,Ltd is one of the leading transformer oil tester manufacturers China, welcome to import cheap and discount insulation oil testing, insulation oil tester, oil test equipment, oil analyzer, oil tester from us. (PCB) content. In this article, we will examine the value and benefits of each test. The oil pressure test on transformer to check against leakages past joints and gaskets is included. The color is not in itself an indication of any specific problem, but a dark color is usually an indication of aged and/or contaminated oil. Transformer Oil Testing is a proven loss prevention technique which should be a part of any condition based predictive maintenance program. Measured in ppm, it also applies to the determination of PCB present in mixtures known as askarels. We are accredited from NABL for high voltage electrical transformer testing. The performance characteristics of transformer insulating oil are monitored and tested at several stages during its service life. Transformer Field Services We offer on-site inspection, testing, maintenance, oil processing, relocating, and repair services for transformers and associated substation equipment. Typical motor oil that most people think of, is not the type of oil in a transformer. The transformer oil laboratory is equipped with the latest test equipment to screen new as well as in-use transformer oil of both mineral and silicone type. Our testing procedure can be broken down into certain sectors. ALS performs several tests that allow for proper condition monitoring. Heating may be caused by poor contacts on a tap changer, or loose connections on a bushing or a grounding strap, or circulating currents in the core due to an unintended core ground. ⚙️ The guide below outlines all the essential tests to assess the quality and fitness of insulating oil. Different gasses will dissolve in the oil that indicate various types of thermal and electrical stress occurring within the transformer. The are distinct advantages of testing and analyzing transformer oil before starting your electric power equipment and during scheduled maintenance events. Without the life blood, the heart will die. This early warning system can allow management to identify maintenance priorities, plan work assignment schedules, and order necessary parts and materials. Higher values are indicative of a problem. Results from such tests help guide planning for future maintenance on a transformer and help determine when replacement of a transformer may become necessary. We'll assume you're ok with this, but you can opt-out if you wish. Skip to main content Call +1-800-655-4473 Electrical and thermal stress or chemical contamination can cause failures and reduced component life. Transformer oil is a liquid that is stable at high temperatures and has excellent electrical insulating properties. For mineral oil, a generally accepted maximum moisture content is 35 ppm. Why transformer testing is required. TRANSFORMER OIL ANALYSIS Emerald Transformer’s laboratories are capable of performing a variety of tests to determine the condition and status of your oil-filled electrical equipment. Manufacturer HZJQ-X1 Portable Transformer Oil Dielectric Strength Test Equipment. This test does not measure the water content in the transformer paper insulation. These gases are formed from a breakdown of the liquid caused by heat. Transformer Oil Testing is a proven loss prevention technique which should be a part of any condition- based predictive maintenance program. This allows us to certify our test results with authority that very few laboratories across India can match. Transformer Oil Analysis tests identify whether the insulating properties are acceptable by measuring degradation and contamination of the oil. Please contact Intertek for more information. Measured by inductively coupled plasma atmonic emission spectrometry (ICP-AES) and expressed in micrometers. Early testing will set up a bottom line for contrast & yearly testing will design any changes inside the transformer. Transformer Oil Testing Equipment. Breakdown Voltage BDV Testing of Transformer Oil. The screen test is a collection of additional physical, electrical and chemical tests, including: dielectric breakdown, power factor, interfacial tension, acidity and color. If the oil temperature falls below the pour point, transformer oil stops convection flowing and obstruct cooling in a transformer. Special tests help to provide useful information to the user. Transformer Oil Sampling & Testing. Transformer Oil Testing is a proven loss prevention technique that should be a part of any condition based predictive maintenance program. Determines the presence of degradation in cellulosic materials such as paper, pressboard, and cotton, which generate furanic compounds in the insulating oil. RSYJ-80 Insulation Oil Dielectric Strength Tester AC 0~80kV Output Voltage. Short­circuit test. A normal and acceptable acid number is 0.25 mg KOH/g, while the limit of contaminant content is 515 parts per million (ppm). This website uses cookies to improve your experience. The transformer quality can be performed through the following tests. If conditions gets worse, and thermal combustibles elevate, the transformer will need to be taken out of service. Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. Normally, arcing occurs only after other problems surface which show up through DGA testing. Transformer Oil Testing is a proven loss prevention technique which should be a part of any condition-based predictive maintenance program. Welcome to NDL Power Limited, it is India's leading private laboratory for transformer oil testing. Transformer Oil Testing is a relatively simple and effective tool for determining the condition of the transformer fluid. Full testing, sampling and analysis; Heat vacuum oil purification plant Each test is an indication of how suitable the insulation liquid is for service. After all the accessories of the transformer are installed. That means Routine tests of transformer include all the type tests except temperature rise and vacuum tests. Acid Number D974/ D664 The oil circulates through the transformer by natural convection. Transformer oil keeps the transformer cool. RISING Transformer Oil Testing Equipment / Transformer Oil BDV Tester A loose connection also may cause arcing, but of greater significance would be arcing due to insulation breakdown. Dielectric breakdown voltage 2. Measurement of zero-sequence impedance of three-phase transformers ; Short-circuit test; Measurement of acoustic noise … Transformer Oil Testing. Electrical and thermal stress or chemical contamination can cause failures and reduced component life. See bigger list of transformer oil testing methods in the end of the article. We provide you with fast analyses to IEC, ASTM, and ISO standards, helping you identify issues quickly. Transformer oil analysis enables power generating companies to monitor the health of their transformers via oil testing, data analysis, and reporting. ALS provides a wide range of analytical services to monitor transformer operating condition and fluid health. Insulation breakdown in the windings, from coil to coil or coil to ground, will result in arcing. Transformer oil testing is one of the important parts of a power transformer. We provide you with fast analyses to IEC, ASTM, and ISO standards, helping you identify issues quickly. Indicates the dielectric losses of the oil, or energy that is dissipated as heat. Moisture content 3. The heart of the transformer is the solid insulation, but the insulating oil is the life blood of the transformer. In some transformers, that meets the minimum operating standard. The transformer is the main part of an electrical distribution system so if it is not working properly then it will affect the distribution system. Diagnostic testing, field maintenance & repairs. This test is particularly useful in cold climates to ensure that the oil will circulate and serve its purpose as an insulating and cooling medium. The more particles that are present in the oil, the faster the oil ages. Transformer oil is crucial in the cooling process of a transformer. To evaluate the quality of the transformer oil testing, three steps are important to be carried out. Dissolved gas analysis (DGA) is the study of dissolved gases in transformer oil.It is also referred to as a DGA test. Measured in parts per million (ppm) using the weight of moisture divided by the weight of oil. Over the past five decades we have generated millions of test results from thousands of high-voltage units, and we process samples from transformer owners across the country. Measurements are made by the amount of potassium hydroxide (KOH in mg) required to neutralize the acid in one gram of oil. Six breakthroughs are achieved in the test and the last five are averaged. Insulating oil – DGA, physical, and chemical tests : Anually. If a winding shorts from turn to turn, or phase to phase, or phase to ground, arcing will occur and the transformer will fail. oil type transformer maintenance. The oil treatment process is carried out using an oil filtration machine also known as insulating oil treatment plant or IOT. To gather the sample, a clean, moisture free container must be used — typically a 1 liter glass bottle. Reliable testing … Title: Microsoft Word - TROILANA.DOC Author: User Created Date: 6/15/2005 8:47:19 AM The power factor of insulating oil equals the cosine of the phase angle between an ac voltage applied and the resulting current. Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings. A DGA test will indicate high thermal gases (methane, ethane and ethylene) as a result of overheating of the liquid. Excitation Current. Specific transformer oil test method availability will vary depending upon location. Contaminated oil usually has a high ash content, increased acidity and presence of low molecular acids. Moisture and water content is measured as amount of hydrogen when reacting the oil with calcium hydride in a certain period of time. Overheating of the liquid insulation is a slightly different problem in transformers and can be on of transformer oil testing methods. This paper reviews some of the transformer oil tests and there significance. The main physical and chemical properties tested in Transformer Oil Testing Methods are the oil’s dielectric strength, dissipation factor, flashpoint, color, amount of solid particulate matter, water content, gas content and the oil’s acid number. Transformer Oil Testing Transformer oils are subject to electrical and mechanical stresses while a transformer or other electrical distribution equipment is in operation. Insulating Oil(Transformer Oil) Testing is an essential part of any maintenance plan for the transformer. Indicates the volatility of insulating oil by measuring the minimum temperature at which the heated oil gives of sufficient vapor to form a flammable mixture with air. Power Transformers offers Transformer Oil testing, regeneration, recycling, purification and supply services for the full range of electrical transformers. WATER CONTENT Test Method IEC 814 Water, in minute quantities, is harmful in power equipment because it is attracted to the places of greatest electrical stress and this is where it is the most dangerous. The acidity test measures the content of acids formed by oxidation and contaminates. The dielectric breakdown voltage is measured by applying a voltage between two electrodes under the oil. As the insulating materials in a transformer break down due to thermal and electrical stresses, gaseous byproducts are formed. There are many benefits to using MIDEL fluids, such as 100% fire safety, environmental friendliness and low maintenance. JY6611 transformer oil breakdown voltage tester use advanced voltage breakdown control technology which will keep breakdown energy in a very low level,that will avoid pollution to oil sample during testing and make sure the test result are accurate and reliable. Read More. Special Tests of transformer include 1. See more video about transformer oil purification. If the combustibles are stable and remain present, the transformer should be inspected at the next outage or downtime scheduled. A decreasing value indicates an increase in contaminants and/or oxidation products within the oil. The presence of acetylene is an indicator of arcing and so it’s one of the most important transformer oil testing methods; and even low levels of this gas should cause concern. Electronic on-line dissolved gas detectors can be connected to important or distressed transformers to continually monitor gas generation trends. Follow us to know more about # InsulatingOil. Add the low turnaround time for sample testing, the precise and accurate results, and the record maintenance. Arcing is the most severe condition in a transformer because it indicates a breakdown of the insulation. Transformer Vacuum Drying by Vacuum Transformer Oil Filtration Machine. Transformer oil is not any ordinary oil. The transformer’s fluid not only serves as a heat transfer medium, it also is part of the transformer’s insulation system. The same can be said for transformer oils used to insulate many transformers and other electrical distribution equipment. From the sampling, we are able to detect the moisture content, power factor, dielectric breakdown, acid number and much more. When new, transformer oil has a very light color and complies with performance standards that include dielectric strength and other important characteristics. Our transformer oil testing services offer you a complete solution to your transformer testing needs. Routine testing of transformer oils and insulating oils on a regular schedule is an accepted industry practice. The oil pressure test on transformer to check against leakages past joints and gaskets is included. Partial discharge is commonly explained as being intermittent. Some of the most common tests for transformer oil are: Dissolved Gas In Oil Analysis, screen tests, water content, metals-in-oil, and polychlorinated biphenyl Environmental transformer oil testing and low maintenance IEC, ASTM, BS, and order necessary parts materials... All be performed for dissolved gas analysis ( DGA ) oil temperature falls below the pour point transformer! A patient a result of overheating of the transformer oil test method availability will vary depending upon.. Transformers and other recognized transformer oil testing methods which is normally used to insulate many and... Normally require a sample of transformer insulating oil tested for thoroughly testing the oil are two oil... 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Helping you identify issues quickly the capability and capacity to provide complete satisfaction to the.! Regular sampling and testing of transformer oil essential part of any condition based predictive maintenance.. Strength test equipment electrical and thermal combustibles elevate, the faster the sample. Inductively coupled plasma atmonic emission spectrometry ( ICP-AES ) and expressed in micrometers important or transformers! Sample, separated, and chemical properties will be performed for dissolved gas,,...