Worlds leading reclaimer of transformer oil over 1 billion gallons processed. Transformer oil is used in oil filled and submersible transformers to maintain temperature of transformer. New oil should have a minimum dielectric strength of 35 kv by astm methods of testing. As part of routine testing regular oil testing enables comparative analysis over time. Like blood testing in human beings, its an essential indicator of good health. The ultimate starting point for any transformer assessment is the oil analysis. The american society for testing and materials astm is the standard reference body used by most utilities in north. This oil sample is used for analysis of water, appearance, particle count, power factor and other analysis which can be affected by contamination. Orpic general conditions of contract shall be a part of this contract. Core and windings of three phase core type transformer there are different types of windings used for different kinds of applications and arrangements. Dnv gl provides independent oil laboratory services covering sampling, analysis and interpretation. Transformer oil testing kit udeyraj electrical pvt. Doble laboratory services oil committee join the doble oil committee members who have a common interest in the quality of. The automatically generated report of the transformer oil testing sequence is available as a pdf version and is stored to the internal memory.
Our transformer oil analysis lab can is capable of conducting the following tests. During operation, the oil oxidizes and the oxidation products accumulate in the transformer oil. Different types of transformer winding electrical4u. 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. There are many reasons to do oil sampling and analysis as a core part of a preventative maintenance program and also during commissioning. The megger ots100af oil test kit can be used for test voltages up to 100 kv megger ots100af oil test kit features. Transformer oil analysis testing service for monitoring the condition of transformer oils routine testing of transformer insulating oil is an essential maintenance function that ensures a safe working environment and helps eliminate the possibility of disrupted production resulting from a transformer failure or explosion. Through proper testing, the transformers lifespan is increased, reducing the need to pay for replacement. Transformer oil is used in oilfilled and submersible transformers to maintain temperature of transformer. Learn what transformer oil is, how to test transformer oil and the different types and properties. Transformer oil testing is a cornerstone of an asset management program. Oil testing is only half the work done without correct and accurate analysis, it serves no worthwhile purpose. Most of the electric power utilities adopt regular analysis of insulating oil samples as a basic requirement of transformer maintenance program.
The hartford steam boiler inspection and insurance company. Transformer oil analysis accredited test labs inspection. Scribd is the worlds largest social reading and publishing site. Bluetooth connection as means of communication with the instruments a usb flash drive interface and a bluetooth connection is offered. Sep 24, 2017 with the help of transformer oil testing kit we can test transformer oil learn the process step by step. Transformer and switchgear manufacturers quality control of oil. 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. Product information dissolved gas analysis and supervision of. Transformer oil surrounds and insulates the coil windings in highvoltage transformers.
Transformer oil tests electrical engineering enersol. Transformer oil analysis provides a highly accurate indication of the internal condition of a transformer. The transformer oil test kit comes with an operating manual for guiding users, a 2 meter long main cord, go and no go gauges, in addition to. Mineral oil is the most common insulating fluid and has been in use since the late 19th century. The megger ots100af oil test kit is a fully automatic oil test set which and is used to perform accurate breakdown voltage tests on mineral, ester and silicon insulating liquids. Transformer testing, transformer oil analysis lab, transformer oil test lab, oil transformer test sl no. Transformer oil sampling, transformer oil testing and analysis company located in chicago illinois. An important part of any transformer maintenance program is the routine sampling and analysis of transformer oil. Product information dissolved gas analysis and supervision. Basics, maintenance, and diagnostics ix contents continued page 6. There are many mineral oil filled transformers that have been in continuous use for more than 50 years.
The contractor is advised to go through the same and comply with the conditions. Product information dissolved gas analysis and supervision of oil condition in transformers and reactors transformers diagnostic services at abb performs dissolved gas analysis and supervision of oil condition in power transformers, reactors, instrument transformers, circuit breakers and oil insulated cables. Transformer oil, a type of insulating and cooling oil used in transformers and other electrical equipment, needs to be tested periodically to ensure that it is still fit for purpose. Ageco international fzes knowledgeable site service personnel are trained in transformer oil sampling. Consistent sampling needed to provide accurate trending results of units. Job safety analysis power transformer testing check this is the latest process zone version before use. The above standard testing is offered in specific diagnostic suites designed to provide the maximum condition information on the transformers. The transformer oil testing kit is of light weight and it is portable, so mobility of the transformer oil test kit is not an issue at all. 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. Transformer and insulating oils are subject to electrical and mechanical stresses while a.
You can also choose from electronic, hydraulic transformer oil tester there are 687 suppliers who sells transformer oil tester on, mainly located in asia. With proper installation, commissioning, protection. Transformer oil analysis bureau veritas commodities. Transformer oil testing measurement of interfacial tension for ensuring the quality of transformers. Pdf significance of transformer oil testing researchgate. Dissolved gas analysis dga testing, dielectric breakdown voltage testing, olychlorinated biphenyl pcb testing, moisture testing, and more. Testing sequences and procedures are defined by various international standards, many of them set by astm. Measures the voltage at which the oil fails electrically, which is indicative of the amount of contaminant usually moisture in the oil.
Identifies various gas ppm levels that are present in transformer insulating oil. In this book we have laid down important aspects on transformer. Transformers were traditionally overdesigned by 300% to ensure a long service life. The performance characteristics of transformer insulating oil are monitored and tested at several stages during its service life. Standard guide for sampling, test methods, and speci. The standard test suites are designed for individual samples to deliver a routine set of oil analysis at low. All of these oil types can be tested for dielectric breakdown voltage and tested with megger ots range test sets. Test parameters test method ref standard 01 interfacial tension ring method is. Massachusetts, indiana, north carolina, texas, and our morgan schaffer laboratory in montreal, canada. Check for oil level release air from the buchholz relay and the bushings. Transformer testing has developed considerably over the past years. Transformer oil testing parameters and test methods. Astm d117 18 standard guide for sampling, test methods, and. Different gasses will dissolve in the oil that indicate various types of thermal and.
This guide describes methods of testing and specifications for electrical insulating oils of petroleum origin intended for use in electrical cables, transformers, oil circuit breakers, and other electrical apparatus where the oils are used as insulating, or heat transfer media, or both. The more contaminants in the oil, the lower the interfacial tension. An oil test can be performed quickly and economically, as the testers can be taken onsite and therefore no oil sample needs to be shipped to a test laboratory. It evolved from the simple gonogo verdict into a sophisticated segment within transformer manufacturing. Testing the condition and quality of transformer insulating oil provides data showing the actual condition of the transformer, and its remaining lifetime. See bigger list of transformer oil testing methods in the end of the article. The dielectric breakdown voltage is measured by applying a voltage between two electrodes under the oil. As means of communication with the instruments a usb flash drive interface and a bluetooth. 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.
Arcs occur usually during voltage testing, shut down and start. Transformer oil is not only subject to its own degradation, but is also a carrier of gasses emanated during arcing or flashovers between paper and winding insulations. Before attempting to draw the sample identify the type of cooling liquid in the transformer. Remove all visible dirt and dust from the sampling point 6. Ampcontrols specialist nata accredited transformer oil testing laboratory provides you with comprehensive support for your transformer assets. Product information dissolved gas analysis and supervision of oil condition in transformers and reactors transformers diagnostic services at abb performs dissolved gas analysis and supervision of oil condition in power transformers, reactors, instrument transformers, circuit breakers and oilinsulated cables. The testing voltage can be set to anywhere up to 100 kilo voltage. Astm d971 is very sensitive in detecting oil soluble polar. Since the oil is in constant contact with components it is therefore susceptible to chemical interaction. Testing of power transformers seems like a similar experience. If regularly conducted, oil analysis allows identification of specific fault conditions that may be developing.
Service contract for carrying out the transformer oil. We recognise that insulating oil testing is a critical step in the management of transformer assets to maximise operational availability. Transformer oil testing and analysis provides important information regarding any such incipient faults, without the need to pull down the equipment from its running condition. Testing result limits 1 average breakdown voltage above 30 kv transformer below 72. After the transformer oil test is completed, the insulation oil is stirred automatically and the test sequence is performed repeatedly.
The testing of transformer oil works by acquiring the breakdown voltage. One of the most important testing that can be performed on the unit without having to open it up or take unit out of service. Page 1 of 8 reference sp0504r01 ver 1 reference owner. As a result, the electrical resistance of the oil falls and. The oil testers by b2hv are of compact design and portable. Remove shield from outlet sampling point 6 of a transformer. Wet insulation contaminates the oil, temperature dependent. Find details of companies offering transformer oil test kit at best price. The megger guide to insulating oil dielectric breakdown. A wide variety of transformer oil tester options are available to you, such as auto testing machine, strength testing machine, and universal testing machine. Transformer oil testing quick, simple and onsite b2hv. Aug 30, 2019 oil testing consists of measuring the breakdown voltage, and other chemical and physical properties of the oil, either through portable test equipment or in a laboratory. 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.
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. Astm d117 18 standard guide for sampling, test methods. Transformer oil, a type of insulating and cooling oil used in transformers and other electrical. The transformer oil test kit is ensured to measure with high level of accuracy. Oil diagnostic suites for transformer oil diagnostics. Npm services offers a full line of transformer diagnostic tests to determine the integrity and serviceability of insulating fluids. 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. The transformer oil testing device measures and reports the root mean square value of the breakdown voltage. The megger guide to insulating oil dielectric breakdown testing. Since the transformer oils are designed to insulate electrically, they must be periodically tested for stability by using standard testing procedures. Transformer oil market global industry analysis, size and. Oil testing consists of measuring the breakdown voltage, and other chemical and physical properties of the oil, either through portable test equipment or in a laboratory. Worlds largest database of test records 4,000,000 customer transformer test records. Application of transformer oil can also be seen in highvoltagecircuit breakers and switches.
316 787 1529 846 103 1070 42 449 597 1508 1601 1613 1257 1199 1010 801 1530 583 1466 159 638 614 907 221 370 622 1251 811 835 1170 466 46