STO-50 Silicone Transformer Oil is formulated exclusively for use as a dielectric fluid and dielectric coolant in high voltage transformers transformers. Electrical properties: Dielectric strength, specific. The mineral-based oil like transformer oil is frequently used in different types of transformers for its dielectric strength as well as electrical properties. Different transformer oil treatments can solve range of problems. The oil that provides insulation and cooling properties for a transformer should be tested before the transformer is energized, and periodically as a part of a regular maintenance schedule. Paraffin-based oil has a higher value of pour point, compared to Naphtha based oil, but in India like country, it does not affect the use of Paraffin oil due to its warm climate condition. In this mineral Oil, available in market are by the name of POWER OIL, TRANSOL, SAVITHA, APAR, GHANDHAR etc. When a insulating materials is placed between live part and grounded part of an electrical equipment, leakage current will flow. Transformers are filled with insulating fluid, which provides electrical insulation within the transformer tank and transfers heat generated in the coils to the tank wall and radiators. Firstly, it is liquid insulation in electrical power transformer. Traces of acetylene might be created if the unit has electrical contacts or if the problem is severe. Even if the cost of testing is high, the expense should be compared to the cost of replacing a transformer and the downtime associated with losing the transformer. A PCB oil is only a hazardous materials subject to USDOT regulations in transportation if there is 1 lb or greater of PCBs in a single packaging. Parker's transformer oil filters maximize the performance and service life of insulating oil by removing moisture and contaminants to increase transformer life spans and reduce transformer breakdowns. MAIN COMPONENTS OF A POWER TRANSFORMER Figure 4.2 illustrates the outline drawing of a transformer. Acidic transformer oil is a harmful property. Apar offers Transformer oils tailor made to suite the exact requirements of different types of Transformers and the latest National / International Standards like IEC 60296-2012, ASTM D 3487 - 2009 Type I & II , EN BS 60296 , BS 148 - 1998 Class I/ IA & II / IIA , DIN 57370 / VDE 7370, AS. A comparison between the Naphthenic and Paraffinic Transformer Oil is listed below. Hyvolt II meets requirements of ASTMD 3487-2009. Most Important: Some spurious oil is being supplied by some spurious Trader in the Name of Transformer oil which looks like Transformer oil but actually this type of oil having flash point of about 100 deg C is very dangerous to public life and property. The level of transformer oil is typically measured using a MOG (Magnetic Oil level Guage). It is available in different Grades like EHV GR-1, EHV-GR2,depending upon the compositions & values of dielectric strength, flash point, neutrilization values as per IS: 335. Again it is clear from the above diagram, the value of ′δ′ which is also known as loss angle. For measuring BDV of transformer oil, portable BDV measuring kit is generally available at site. Buchholz (Gas) Relay. Its unit is ohm-cm at a specific temperature. The oil used in the transformer is a key element to check the physical condition of the unit. 1767.1 - 1999 and Doble's TOPS, IS 335 - 1993 and IS 12463 - 1988. Established in 1994 in the field of Transformer manufacturing and has over 30 years of experience in Design and manufacturing of Transformers & rectifiers. It is used to step up or step down AC voltage. Moisture or water content in transformer oil is highly undesirable as it affects the dielectric properties of the oil adversely. Although Paraffin oil has a lower oxidation rate than Naphtha oil, the oxidation product (sludge) is insoluble and precipitated at the bottom of the tank. It absorbs the excess amount of heat when the transformer is operational and keeps the transformer cool from inside. The Autobots (also known as Cybertrons in Japan) are the heroes … We express the acidity of oil in mg of KOH required to neutralize the acid present in a gram of oil. When the oil gets deteriorated or the solid insulation gets damaged, or its quality decreases, and because of this, the efficiency of the transformer gets affected. If the results from the test are showing some red flags, the frequency will have to increase. Typically a oil/water heat exchanger (radiator) is attached to the outside of the tank. The performance characteristics of transformer insulating oil are monitored and tested at several stages during its service life. The acidity test of transformer oil can be used to measure the acidic constituents of contaminants. in Dyne/cm or milli-Newton/meter. Transformer oil is an oil which remains stable at high temperature. In this kit, oil is kept in a pot in which one pair of electrodes are fixed with a gap of 2.5 mm (in some kit it 4mm) between them. The liquid serves two purposes. There are two main types of transformer oil used in transformers: Naphtha oil is more easily oxidized than paraffin oil. The Buchholz (gas) relay is placed in the piping between the transformer main tank and the oil conservator. It must be leveled and fire-resistant. Transformer insulating oil from MIDEL. )to provide proper cooling 2.) Get info of suppliers, manufacturers, exporters, traders of Transformer Oil Test Kit for buying in India. Transformer oil is called as mineral oil which is free from FATTY acids.And the Chemical name of Transformer oil is Hydrotreated Light Nepthanic Distillate. As Paraffin-based oil has more wax content, it has higher pour point. So it’s best to use them as diagnostics if an issue occurs during primary testing. Transformer Oil is basically an Insulating Oil. The specific resistance of oil is a measure of DC resistance between two opposite sides of one cm3 block of oil. First, it is the fundamental element of the insulating system. Core. We are offering a wide range of Transformer Oil which is a series of high performance transformer oils specially developed to satisfy different application and various equipment needs. Transformer or insulating oils are very pure highly refined mineral oils optimized to meet the stringent requirements of the international Standard IEC 60296, Edition 4.0 2012 02. It’s important to understand the difference between excessive and normal gassing rates. pressure relief vent : So it is desirable to have a very high flash point of transformer oil. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. It is the minimum temperature at which oil starts to flow under standard test condition. Servo Transformer(Electra) is a high quality un-inhibited insulating oil developed for the use in electrical transformers & circuit breakers. This is another important property of transformer oil. There are two types of Transformer Oil, Naphthenic and Paraffinic based Transformer Oils. Transformer Oil also acts as insulation so that it could protect winding from direct contact with the oxygen and stop any kind of oxidation reaction. Servo Transformer(Electra) is a high quality un-inhibited insulating oil developed for the use in electrical transformers & circuit breakers. Hyvolt II meets requirements of ASTMD 3487-2009. ... Name * Email * Website. Ergon's Hyvolt II Transformer Oil is a severely hydrotreated naphthenic insulating oil that does not require carcinogenic labeling. Oil color is determined by means of transmitted light and given a numerical value (0-5) based on comparison with a series of color standards. STO-50 Silicone Transformer Oil is a 100% Polydimethylsiloxane silicone oil (CAS# 63148-62-9) with a viscosity of 50cSt (centistoke) @ 25°C. Insulating oil in an electrical power transformer is commonly known as Transformer Oil. Hence current through the insulator will lead the voltage with an angle little bit shorter than 90o. flash point of insulating oil. 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. 2) High resistivity leading to better insulation values between windings. Transformer oil is used to insulate the electrical power of a transformer and used to stop the direct contact of oxygen in the transformer. and it has all the necessary important properties like high ignition temp.,no sludge formation,low resistance to imulsion,etc. In the last five decades in India, there is a drastic change in production technology. If the oil temperature falls below the pour point, transformer oil stops convection flowing and obstruct cooling in a transformer. Acid coupled with water further decompose the oil forming more acid and water. and to provide proper insulation . The oil used in the transformer is a key element to check the physical condition of the unit. Core. Transformer oil Treatment. Over time, the oil will degrade resulting in the potential for faults and costly repairs. Tel : 0086-23-62613622 Phone : 0086-15123029885 Add : 25F, Huarun Center, Xiejiawan Street, Jiulongpo District, Chongqing, China, 400050 E-mail : gold06@hy-industry.com Fax : 0086-23-62940030 Skype : christinejinhua@outlook.com Facebook : gold06@hy-industry.com Whatsapp : +8615123029885 Wechat : + 8615123029885 Hence it is desirable to have loss angle as small as possible. In this mineral Oil, available in market are by the name of POWER OIL, TRANSOL, SAVITHA, APAR, GHANDHAR etc. Overheating oil will produce methane and ethylene (300 degrees F) or methane and hydrogen (1,112 degrees F). So both resistivity test and tan delta test of transformer oil are generally not required for the same piece of the insulator or insulating oil. Usually If dial type thermometer trip the transformer, when oil temperature becomes greater than 105º. Over time, the oil will degrade resulting in the potential for faults and costly repairs. The Buchholz protection is a mechanical fault detector for electrical faults in oil-immersed transformers. 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. Second, liquid transfers heat away from the windings to be dissipated by the cooling fins, tank surface, or radiator. Transformer oil is also used to preserve the transformer’s core and windings – as these are fully immersed inside the oil. The power transformer protection as a whole and the utilization of the below presented protection devices are not discussed here.. 1. During oxidation, acids get formed in the oil the acids give rise to the solubility of water in the oil. Despite the disadvantages mentioned above, paraffin-based oil is still commonly used in many countries (such as India) due to its high availability. The performance characteristics of transformer insulating oil are monitored and tested at several stages during its service life. act as a coolant). Mineral oils have long since been recognised as a fire hazard, but MIDEL’s natural ester fluids and synthetic ester MIDEL 7131 all possess a 100% fire safety rating. In one sentence it can be said that tanδ is a measure of the imperfection of dielectric nature of insulation materials like oil. Full disclaimer here. So taking the proper testing procedures now will save you thousands of dollars in the long run. The company has its presence in more than 100 countries such as Brazil, Canada, the US, China, Australia, Japan, Germany, the UK, and Saudi Arabia. (Supervisory Control and Data Acquisition), Programmable Logic Controllers (PLCs): Basics, Types & Applications, Diode: Definition, Symbol, and Types of Diodes, Thermistor: Definition, Uses & How They Work, Half Wave Rectifier Circuit Diagram & Working Principle, Lenz’s Law of Electromagnetic Induction: Definition & Formula. The power transformer protection as a whole and the utilization of the below presented protection devices are not discussed here.. 1. It is normally obtained by fractional distillation and subsequent treatment of crude petroleum. 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.e. Oil oxidation contaminants lower the IFT. Noticeable darkening oil indicates either contamination or that arcing is taking place. Minimum standard specific resistance of transformer oil at 90oC is 35 × 1012 ohm–cm and at 27oC it is 1500 × 1012 ohm–cm. Regular monitoring of the oil’s quality and condition is a part of the process of servicing electric power equipment. Now slowly rising voltage is applied between the electrodes. Buchholz (Gas) Relay. The amount of dissolved gas in transformer oil can be found using a dissolved gas analysis (DGA) test. The company provides transformer oil under its brand name Shell Diala through the Downstream business segment. It absorbs the excess amount of heat when the transformer is operational and keeps the transformer cool from inside. It must be leveled and fire-resistant. The properties (or parameters) of transformer oil are: The dielectric strength of transformer oil is also known as the breakdown voltage (BDV) of transformer oil. Hyvolt II is an inhibited product providing high dielectric strength. Chemical name or formula name of usually using in transformer is DIFLORO DICHLORO ETHYL BENZENE . Another problem with paraffin-based oil that the dissolved waxes inside of it can lead to a high pour point. Choose from three MIDEL products, our synthetic transformer oil MIDEL 7131 or our natural ester fluids MIDEL eN 1204 (rapeseed/canola) and MIDEL eN 1215 (soya), all of which can ably perform in a broad range of applications. Autobots. It includes technologies that can complete several tasks: As oil is heated by the windings, it rises to the top and exits through piping to the radiator. See bigger list of transformer oil testing methods in the end of the article. Oil Natural Air Forced (ONAF) ONAF method is used for the cooling of the transformer of rating up to 60 Mega volts ampere.As discussed above that in ONAN method, the dissipation of heat is taking place by the convection process in which air is naturally circulated to cool down, but in this type, the forced air is used for the purpose of cooling the transformer. An Insulating Oil must have the following properties: 1) Excellent dielectric properties resulting in minimum power loss. It is manufactured through special refining process selecting optimum types of hydrocarbons so that finished transformer oil provides longer service life, It does not contain Poly-Chlorinated Bi-phenyis (PCBs). Transformer Oil does mainly two tasks. But in a loaded transformer, oil becomes hotter, hence the solubility of water in oil increases. Specifically engineered and thoroughly tested for use in electrical power systems, XIAMETER™ PMX-561 Transformer Liquid is among the least hazardous of all known engineering materials, making it an excellent alternative to organic transformer oil. Acid also includes rusting of iron in the presence of moisture. 1767.1 - 1999 and Doble's TOPS, IS 335 - 1993 and IS 12463 - 1988. STO-50 Silicone Transformer Oil is a 100% Polydimethylsiloxane silicone oil (CAS# 63148-62-9) with a viscosity of 50cSt (centistoke) @ 25°C. See bigger list of transformer oil testing methods in the end of the article. So we should try to keep the value of tanδ as small as possible. Flash point of transformer oil is the temperature at which oil gives enough vapors to produce a flammable mixture with air. FOR PRODUCTS OR QUANTITIES OVER 100 POUNDS PLEASE REQUEST A FREIGHT SHIPPING QUOTE | 601.630.9972 With increase in temperature the resistivity of oil decreases rapidly. Just after charging a transformer after long shut down, the temperature of the oil will be at ambient temperature and during full load, the temperature will be very high and may go up to 90oC at an overload condition. A well known name in the transformer industry and one of the leading transformer manufacturers in India. Transformer coil and core are immersed in oil. Thermometer usually placed close to transformer name plate. Whenever oil temperature increases to specific level, it provide signal to alarm circuit. If oil becomes acidic, the water content in the oil becomes more soluble in the oil. Silicone based transformer oil was generally popularized in the middle of 70’s and has become broadly accepted for transformer where the location or environment presents a risk that appeals a fire safety alternative to transformer oil. For good Transformer Oil Flash Point should be higher (140 Centigrade). High Pour point does not cause any problem because of hot climate of India. In general it is more than 140o(>10o). Properties of MIDEL 7131 As a result, the paper releases water and increase the water content in transformer oil. What is the chemical name of transformer oil? The water content in oil also affects the paper insulation of the core and winding of a transformer. Transformer oil is a mineral based oil that is commonly used in transformers for its chemical properties and dielectric strength. Transformers: Basics, Maintenance, and Diagnostics vii Contents (continued) Page 4. This Transformer Oil is used to enhance the performance of the transformers. A PCB oil of this concentration would be subject to TSCA regulations of which I am not very familiar. The table below shows the most common issues that can occur when testing transformer oil: Keep in mind, and transformer oils can last for up to 30 years. Its functions are to insulate, suppress corona discharge and arcing, and to serve as a coolant. It provides… Paper absorbs the maximum amount of water from oil which affects paper insulation property as well as reduced its life. This oil is manufactured using only the best quality ingredient and are free from all sorts of contamination. It is generally done with a portable testing unit which applies test voltage that increases in intensity until a breakdown point of the oil is detected. Interfacial tension is exactly useful for determining the presence of polar contaminants and oil decay products. Transformer oil is a mineral based oil that is commonly used in transformers for its chemical properties and dielectric strength. 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. Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. Every liquid becomes more viscous if the temperature decreases. This mixture gives momentary flash on the application of flame under standard condition. Thus the temperature of the oil at the time of taking a sample for the test is critical. The water content in oil is allowed up to 50 ppm as recommended by IS–335(1993). Ethylene and ethane testing procedures now will save you thousands of dollars the... 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The rate of rising voltage is applied between the Naphthenic and Paraffinic based transformer oils come in a loaded,! 'S Hyvolt II transformer oil can be found using a dissolved gas in transformer oil the... Cooling system ′δ′ which is free from FATTY acids ppm as recommended by (. Of ethylene and methane can be found using a MOG ( Magnetic oil level Guage ) a! Equipment, leakage current through the heat exchanger, but the oil adversely electrical...