Mineral insulating oils

Transformer oils are essential fluids for the proper functioning of electrical transformers, serving the purpose of insulating and cooling the electrical equipment.

Transformer oils

Ergon’s HyVolt oils are premium dielectric fluids that meet the latest requirements of the IEC 60296:2020 general specifications. These products feature a very low pour point, excellent oxidation stability, and outstanding electrical properties, making them suitable for the most demanding requirements set by leading transformer manufacturers worldwide.

HyVolt IHyVolt III
METHODSPECIFICATIONSVALUESMETHODSPECIFICATIONSVALUES
Product Type UnadditizedAdditized
Viscosity, mm²/s at 40°CISO 3104MAX: 12.09.7ISO 3104MAX: 12.09.6
Viscosity, mm²/s at -30°CISO 3104MAX: 1800941ISO 3104MAX: 1800885
Pour Point, °CASTM D5950MAX: -40-49ASTM D5950MAX: -40-53
Water Content, mg/kgIEC 60814MAX: 3013IEC 60814MAX: 3014
Breakdown Voltage, kV, before treatment, 2.5 mmIEC 60156MIN: 3052IEC 60156MIN: 3055
Breakdown Voltage, kV, after treatment, 2.5 mmIEC 60156MIN: 7072IEC 60156MIN: 7075
Density at 20°C, kg/m³ISO 12185MAX: 0.8950.871ISO 12185MAX: 0.8950.869
DDF at 90°CIEC 60247MAX: 0.0050.001IEC 60247MAX: 0.0050.0004

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Transformer oils

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