Transformer Oil GK is a high quality special insulating oil. It is produced from mineral oil with low sulfur content by using hydrocracking process, and contains 0.25-0.40% by weight. Oxidation inhibitor. The product is characterized by a long service life, and is non-aggressive with respect to most insulating materials. Rosneft GK fully complies with the requirements of the international standard IEC 60296: 12.
Transformer Oil GK is intended to fill the power and instrument transformers and other high-voltage equipment. Recommended for use in electrical machinery of higher voltage classes.
Approvals and specifications
Approvals: IEC 60296:12, ART-TRA S.r.L Recommended for use by PJSC ROSSETI, Ural transformer plant LLP. Meets Requirements: IEC 60296:12; ART-TRA S.r.L; Recommended for use by PJSC ROSSETI
• Unique oxidative stability, confirmed by industry operating experience, ensures oil life up to 30 years;
• The oil is gas-emitting, which allows to detect the hydrogen generated at an early stage in the development of transformer errors;
• Accurate quality control of production provides the highest level of performance properties.
216.5 L, bulk (auto and railroad)
Typical physical and chemical properties
|Name of characteristic||Test method||Oil GK|
|Кинематическая вязкость при 50 °С, мм2/с при минус 30 °С, мм2/s||GOST 33 / ASTM D445||7 771|
|Acid number, mg KOH/g||GOST 11362 / ASTM D4739||0,003|
|Тангенс угла диэлектрических потерь при 90 °С, %||GOST 6581||0,1|
|Напряжение пробоя после подготовки пробы, кВ||GOST 6581||70|
|Стабильность против окисления — массовая доля осадка, %||GOST 981||0,007|
|Flash point, COC °C||GOST 4333 / ASTM D92||141|
|Pour Point, °C||GOST 20287 / ASTM D97||-48|