Transformer oils Composition: Produced from sulfurous paraffinic oils using the hydrocracking process. Contains the additive ionol. Fully meets the requirements of the IEC 296 standard for class IIA oils. They have good dielectric properties and high stability against oxidation. Scope of application: Recommended for use in electrical equipment of higher voltage classes. Technical characteristics Indicators of physical and mechanical properties Kinematic viscosity, mm2/s, at temperature: 50 °C 9 40 °C - 20 °C - -30 °C 1200 -40 °C - Acid number, mg KOH/g, no more than 0 .01 Temperature, °C: flash in a closed crucible, not lower than 135 solidification, not higher than -45 Contents: water-soluble acids and alkalis - mechanical impurities, absence of phenol - sulfur, % (wt. fraction) - sulfonating substances, % (vol.) , no more - Stability, indicators after oxidation, no more: sediment, % (wt. fraction) 0.015 volatile low molecular weight acids, mg KOH/g 0.04 acid number, mg KOH/g 0.1 Stability according to the IEC method, induction period , h, not less than 150 Transparency - Dielectric loss tangent at 90 °C, %, not more than 0.5 Color, units. CNT, no more than 1 Corrosion on a copper plate withstands Refractive index, no more - Density at 20 °C, kg/m3 no more than 895 Oxidation conditions when determining stability according to the GOST 981-75 method: Temperature, °C 155 Duration, h 14 Consumption oxygen, ml/min
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