Transformer Oil

Transformers oils are used as a source of insulation and protection in transformers and electrical switches. The main functions of transformer oils are to insulate or prevent the flow of electrical current between the energized elements of transformers and electrical switches, to cool or remove the heat of the energized parts of equipment, and to protect the metal parts from the corrosive action of water or any other corrosive element that may be present inside the transformer. Transformer oil complies with international standard ASTM D-3487.

Technical Specifications Table

PROPERTIES TEST METHOD SPECIFICATIONS
Visual Aspect ASTM D-1524 Clear and Bright
Color ASTM D-1500 0,5 max
Specific Gravity at 15°C / 15°C ASTM D-1298 0,89 max
Aniline Point, °C ASTM D-611 63 - 84
Pour Point, °C ASTM D-97 -30 max
Interfacial Tension at 25°C, dine/cm. ASTM D-971 40 min
Flash Point, °C ASTM D-92 145 min
Viscosity, , cSt at 100°C ASTM D-445 3,0 max
Viscosity, , cSt at 40°C ASTM D-445 12,0 max
Viscosity, , cSt at 0°C ASTM D-445 76,0 max

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