Technical Specification for 33/11kV Power Transformers ( APDRP Scheme ) ... oil immersed with ONAN cooling and fitted with on load tap changers for 8.00 MVA Transformer only. Inhibited transformer oils can extend the service life of transformer oil. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> endobj Distillates from these crudes may be acid refined, hydrogen treated, solvent extracted or processed by other suitable refining methods to yield acceptable mineral insulating oils that meet the test requirement at the point of delivery. The rest is distilled to solar oil fractions. 1767.1 - 1999 and Doble's TOPS, IS 335 - 1993 and IS 12463 - 1988. Distribution transformers are designed for general application uses at ambient temperature maximum 40℃ at temperature raised 60℃ (top oil) / 65℃ (winding), which will be manufactured and tested in accordance with the latest IEC standard. The rest is distilled to solar oil fractions. Changing of temperature by 1ºС, its volume weight changes by 0.0007 units. HIGH VOLTAGE V (22000) HIGH VOLTAGE TAPPINGS (NO LOAD) % kV ±2x2.5. The specifications should also reference the latest version of the standard. This parameter is mostly important for fresh oils; it shows the quality of their washing. HP TRANSFORMER OIL I is inhibited type transformer oil meeting IS:12463. Content of sulfur in the transformer oil is measured by its influence on a copper plate. The latter two are unacceptable since this chemical element can intensify corrosion and increase resistance of contacts in transformer switches. This website uses cookies to improve your experience. This is a method of measuring the quality of the transformer oil purification process by the amount contaminants left in the oil. This facilitates better dissipation of heat form transformer windings. This increases the possibilities for … TEST PARAMETERS TEST METHOD SPECIFICATION Min. This is not the main parameter, but provides some information on the actual quality of the oil. To stop this and to insulate and dissipate the heat of the transformer, transformer oil or power transformer oil is used. Ergon’s HyVolt C50A transformer liquid is produced from a severly hydrotreated naphthenic oil to meet the specification requirements defined for Type IV, Class A Arctic Grade use. Density(K G/dm³) @20°C ISO 3675 0.89 Max 3. This website uses cookies so that we can provide you with the best user experience possible. It also meets IS:335-2018 TYPE II INHIBITED. Castrol Insulating Oil is a pure mineral hydrocarbon oil, specially refined and blended from selected crudes. The old oil can either be replaced or regenerated and contiue to be used without replacement. NYTRO Libra is an uninhibited transformer oil that conforms to IEC 60296 Edition 5.0. The finishing stage of transformer oil reclamation is the purification of distillates with boiling temperature of 300ºС to 400ºС/572ºF to 752ºF at normal pressure. 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. It is therefore, better to prevent the problem than performing expensive corrective maintenance operations. Transformer Oil Specifications. 0���i��a�_��3x>�*�q"u$�X�!Y�zVͅ�}�g���K襚��_��>m�fv�{�N���'���T����JCx^ d�a� ��b~�Єq�E�q|p��S���FD������K.��Tĩ���l��E���o�鬶bS��N֪E��\�� Transformer oil-specifications new 1. Transformer Insulating system Oil Paper 1. Physico-chemical properties Transformer Oil Specification Scope: The condition case manufacture, testing, supply and delivery and the need of latest insulating oil of petroleum source satisfactory for use as insulating and warmness relocation medium and are demolishing medium in power/ … Viscosity. Properties and specifications of transformer oil are as follows: Color. The ratings required are 3.15 MVA, 5.0 MVA and 8.0 MVA. off-specification used oil (does not meet the requirements). The properties (or parameters) of transformer oil are: Electrical properties: Dielectric strength, specific resistance, dielectric dissipation factor. The sodium test of a fresh product can also show its stability. Dielectric transformer oil is made from crude oil by separation of the most volatile hydrocarbons: diesel fuel, gasoline and kerosene. This is because it tends to deteriorate over time. An Insulating Oil must have the following properties: 1) Excellent dielectric properties resulting in minimum power loss. Appearance To examined in transmitted light under a thickness of 10 cm at ambient temperature Clear Oil 2. TRANSFORMER TYPE Oil immersed, Hermetically sealed. APPLICABLE STANDARDS IEC 60076-1. Transol GE IEC60296:2012 Uninhibited is an uninhibited oil which is designed to meet Specifications as per IEC 60296:2012. Insulating Oils or Transformer Oils are mineral electrical insulating oils processed from fractional distillation and treatment of crude petroleum. Transformer Oil Testing is a proven loss prevention technique which should be a part of any condition-based predictive maintenance program. 2) High resistivity leading to better insulation values between windings. This means that every time you visit this website you will need to enable or disable cookies again. High Vacuum process removes free and soluble water. In more recent years the treatment of transformer oil is the first choice for a cost effective and efficient maintenance program: the increasing cost of new oil, the importance of productivity and equipment downtime, coupled with the environmental benefits of avoiding the transportation of hazardous waste and use of virgin products, are all part of the equation – this applies to medium/high … Known for its precise engineering, these plants are manufactured in different specifications to suit the needs of diverse applications. This parameter of the transformer oil is not regulated. Upgrading of new and used electrical insulating liquids, transformer oils & silicones. Some specific properties of insulating oil should be considered to determine the serviceability of the oil. Mobile and stationary units available in sizes from 200 to 23,000 l/h. INSTALLATION Outdoor. ... losses and magnetization current. This easy-to-operate and compact equipment has a degassing column with single, two or three stage versions. The CMM-MR units provide complete regeneration of dielectric insulating oils using Fuller’s Earth which can be reactivated in the system without the need to stop the process. 1 0 obj Portable Transformer Oil Purifier/Degasifier (E865C) 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. <>>> Transformer Oil is basically an Insulating Oil. IS-335/1993 Specification for uninhibited new insulating oils. SUNOCO TYPE II TRANSFORMER OIL is an electrical insulating naphthenic oil that meets the ASTM D-3487 specification for inhibited oils. Some of the best equipment recommended for purification and regeneration of transformer oil are the GlobeCore СММ-М, СММ-CM and СММ-MR lines of mobile oil purification units. HP TRANSFORMER OIL is designed for human safety and free from carcinogenic Poly chlorinated Bi-phenyls (PCB) and Poly aromatic hydrocarbon (PAH). Acts as a Coolant 2. Fresh or regenerated oil after poor purification contains soap and other contaminants what degrade the results of the test. The specifications should state which clause in the specification should meet which standard. If you disable this cookie, we will not be able to save your preferences. �üX�/ ]��frw�����4 ���ھg>��\�޴����տ��=X��w[���������x�{k�������q�� ���\ LOW VOLTAGE (NO LOAD) V 400. endobj Purification and regeneration can be performed on energized transformers. It is an uninhibited transformer oil, optimised for high performance to meet the stringent requirements of the IEC 60296:2003 specification. Test Properties Test Method Specification; 1: Appearance: The transformer’s MV.A rating is usually determined based on the system expected load ... • Oil temperature rise. 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