Transformer Oil (205L)
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Transformer Oil is a selected refined mineral oil having the properties of insulating coils of transformers, switches and circuit breakers both electrically and thermally. The oil must have very low viscosity and high chemical and oxidation stability with Flash Point of 275 - 325° F.
Transformer Oils are prepared by careful selection of crude oil and greater degree of refining. The oil is refined in such a way that it imparts exceptional high oxidation and high resistance to gas formation. The oil shows high degree of dielectric properties and resistance to power losses. Well-stabilized methods are used to control the quality of the oil in order to meet international standard specification and maximum trouble free services. Transformer Oil is made for transformers as well as for insulating switchgears and circuit breakers.
Transformer Oils have two main functions, insulation and cooling. These two functions are both important and good transformer oils must possess these properties over a long period of time despite temperature increase, contact with metals etc. The careful selection and optimum refining of crude oils are the only way to develop these properties. HY-TRANS is produced according to IEC 60296 specification suitably adjusted for tropical areas. It also meets the specification of BS - 148.
PHYSICAL AND CHEMICAL PROPERTIES
| TEST METHOD | METHOD TITLE | Spec |
|---|---|---|
| IEC-296 | Appearance | Visual |
| ISO-2049 | Color | (ASTM) |
| ISO-12185 | Density at 20 oC Kg/dm3 | 0.895(Max) |
| ISO-3104 | Viscosity Kinematic at 40 oC cSt | 12(Max) |
| ISO-3104 | Viscosity Kinematic at -20 oC cSt (Lcset) | 1800(Max) |
| ISO-5662 DIN 51353 |
Corrosive Sulphur | Non Corrosive |
| IEC-62021-1 | Total Acid No mg KOH/gm (Potentiometric) | 0.01(Max) |
| ISO-2719 | Flash Point PMCC oC | 135(Min) |
| ISO-3016 | Pour Point oC | -30(Max) |
| IEC-60156 | Di Electric Strength K.V. | 30(Min) |
| IEC-61125C | Oxidation stability | |
| (a) Sludge Value % WT | 0.8(Max) | |
| (b) Acidity after Oxidation mg KOH/gm | 1.2(Max) | |
| (c) DDF @ 90 °C | 0.500(Max) | |
| IEC-60814 | Water Content (ppm) | 30(Max) |
| IEC-60247 | Tangent Delta at 90 °C, | 0.005(Max) |
| ISO-6295 | Interfacial Tension mN/m | N.G.R |
| IEC-61198 | 2-Furfural content (ppm) | 0.1(Max) |
| BS-2000 Part-346 | PCA | 3%(Max) |
| IEC-61619 EPA 9079 |
PCB content* | N.D |
| IEC-60666 | Antioxidant additive** | U/T/I |