Product information sampling for oil condition test and dissolved. Transformer oil testing is a proven loss prevention technique which should be a part of any condition based predictive maintenance program. Oil sampling and analysis north vancouver facility. The new sure sampler assures that you will get a representative sample of oil from your transformer. A car requires oil for lubrication while a transformer requires oil for insulation and cooling. Transformer oil testing is a proven loss prevention technique that should be a part of any condition based predictive maintenance program. Furans are one of several chemical compounds that are. After a transformer has been received at its final destination, it is advisable to put it full of oil on its permanent place, even if it is not going to be placed in operation immediately. The disposal of these items shall be carried out according to the local regulations with regard to the impact on the environment. The first and most important step in the testing procedure is securing a good representative sample. Transformer oil purchase specifications developed under the auspices of the doble oil committee march, 2017 composition this specifications covers new insulating oil for general applications for liquidfilled electrical equipment, which are manufactured from mineral crude, which may be either naphthenic, which has a very low naturally. Oil testing capabilities doble engineering company. Once you decide to dispose of the transformer, you are no longer required to assume that it is. Sampling of transformer oil by syringe as per iec 60475.
This standard gives rise to mineral insulating oils, chemicals and used sample containers. Astm d923, method of sampling electrical insulating oil from a transformer differences between dissolve gas analysis with mineral oil and with beta fluid gas solubility. Product information sampling for oil condition test and dissolved gas analysis oil condition and dissolved gas analysis to be noticed at sampling make sure that the hose from the transformer is made of pvc, new, and clean both on the inside and outside. Do you know the easiest way to find out the condition of your electrical assets. Procedures for drawing transformer oil samples general sampling electrical insulating oil for laboratory analysis requires care to ensure that the sample is representative of the product being sampled. The oil sample should preferably be taken at a point where the oil is normally in circulation e. Taking oil sample from power transformers dissolved gases astm d 3612, iec 60567, dissolved water astm d 1533, iec 60814 the following is one of the procedures to collect transformer oil sample.
Connect the transformer and the sampling kit valve top with the reinforced tubing. Make sure that the hose from the transformer is made of pvc, new, and clean. Transformer oil maintenance electric energy online. Oil condition and dissolved gas analysis to be noticed at sampling. Aug 30, 2019 transformer oil also known as insulating oil is a special type of oil which has excellent electrical insulating properties and is stable at high temperatures. Transformer oil testing by robert turcotte, manager, electrical loss control the hartford steam boiler inspection and insurance company the value of transformer oil testing transformer oil testing is a proven loss prevention technique which should be a part of any conditionbased predictive maintenance program. Transformer chemistry servicestcs po box 1265, westville 3630. For larger, typically 33kv and above, transformers there is often a specially designed sample point that can be utilised. Practice procedure of transformer oil sampling iec 60475 procedure of oil sampling in aluminum bottle the aluminum bottle is used for oil analysis in general and for analysis of compounds which are sensitive to light such as peroxide and furfural. Page 2 of 8 reference sp0504r01 ver 1 reference owner. The transformer oil testing device measures and reports the root mean square value of the breakdown voltage. What is going on inside that big grey tank that we call a transformer.
If the transformer oil sampling and analysis reveals the presence of gases, water, acid compounds or mechanical impurities in the composition of an insulating liquid, its characteristics must be restored. Oil sampling and analysis north vancouver facility we are pleased to submit the insulating fluid report and test sheets for the three 3 transformers and one 1 ocb located at the north vancouver facility. This early warning system can allow maintenance management to identify maintenance priorities, plan work assignment schedules, arrange for outside service, and order. This guide is classified into the following categories. Jun 21, 2017 transformer oil sampling the first stepsimple but critical.
Iec 60475, method of sampling liquid dielectrics iec 60628, gassing of insulating liquids under electrical stress and ionization iec 60666, detection and determination of specified antioxidant additives in insulating oils iec 60814, insulating liquids oilimpregnated paper and pressboard determination of. Documentation oil sampling kit mode of operation siemens ag material testing laboratory nuremberg 1. Transformer oil analysis bureau veritas commodities. In order to obtain a representative transformer oil sample from the body of the oil a standard approach, welltrained operatives and a sampling adapter to ensure a steady flow of oil are essential. Basics, maintenance, and diagnostics ix contents continued page 6. Oct 28, 20 there are some sampling techniques better suited for certain types of oil tests than others. Perhaps, the easiest way to explain the reasoning for proper transformer oil maintenance is to compare a transformer to a car. Transformer oil is used in oil filled electrical power transformers to insulate, stop arcing and corona discharge, and to dissipate the heat of the transformer i.
Every precaution should be taken to prevent release of mineral insulating oil into the environment. Caltran transformer oils fully meet astm d3487 specifications for type i and type ii mineral. Transformer oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. It also insulates the transformer and allows electrical components to be. Globecore developed a number of oil plants that provide cleaning and.
The analytical services performed by dobles materials laboratories provide you with the accurate information you need to intelligently diagnose any existing and potentially devastating problems in your liquidfilled equipment. We are pleased to submit the insulating fluid report and test sheets for the three 3 transformers. Before attempting to draw the sample identify the type of cooling liquid in the transformer. If this is not possible, the transformer has to be placed in a dry place and the transformer must be filled with oil.
If a proactive approach is adopted based on the condition of the transformer oil, the life of the transformer can be extended. Remember to note the aluminium bottle index number in the questionnaire. However, care should be taken not to sample near live leads. However, in california, used oil is managed as hazardous waste until.
After the transformer oil test is completed, the insulation oil is stirred automatically and the test sequence is performed repeatedly. This early warning system can allow management to identify maintenance priorities, plan work assignment schedules, and order necessary parts and materials. Sampling of transformer oil sampling point the oil sample should preferably be taken at a point where the oil is normally in circulation e. While being recycled, used oil is regulated by 40 cfr 279. Dissolved gas analysis guide for transformers filled with. Transformer oil analysis basic introduction by n robinson, wearcheck as blood tests disclose ones state of health, so oil analyses disclose the condition of a transformer. The sure sampler provides a leakproof seal and is designed to take samples from the outlet end of the main drain valve, the recommended sampling location.
Typical motor oil that most people think of, is not the type of oil in a transformer. The techniques described in this video should be sufficient to sample oil when common chemical and. We start our transformer oil sampling series with a number of highlights on health, environmental and safety considerations when performing these tasks. Use resulting in chemical or physical change or contamination may also subject it to regulation as hazardous waste. Compared with the cost of premature or catastrophic failure, regularly scheduled oil testing is a costeffective and. As the data below shows, the solubility of various gases in beta fluid is very similar to that in conventional transformer oil. Astm d117 18 standard guide for sampling, test methods, and. Transformer oil analysis report company abc singapore pte ltd manufacturer toshiba transformer id traa02 year of manufacturer 1989 serial number 111111 oil capacity 12000 kg voltage 66,000 22,000 v sampling temperature 34. Product information sampling for oil condition test and. Transformer oil sampling toolkit electrical oil services eos. Job safety analysis power transformer testing check this is the latest process zone version before use. Remove shield from outlet sampling point 6 of a transformer. If regularly conducted, oil analysis allows identification of specific fault conditions that may be developing.
Dissolved gas analysis of power transformer introduction insulating oil in an. There are a number of reporting options that could be considered form individual pdf reports through to. Gray transformer chemistry services introduction the fault free operation of power transformers is a factor of major economic importance and safety in power supply utilities and. Let me share with you some trade secrets which will help you make the best decisions for the optimal management of your assets. Use an adequate adapter and loose the tap screw nut with the gripper. Download pdf field testing at virginia and georgia transformer corp, you will enjoy a level of service that will make you appreciate your decision to purchase our products.
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