Features

Univolt N 61B is manufactured from carefully selected base stocks favored by the domestic power industry under stringently controlled manufacturing conditions. It meets the demanding requirements of the ANSI/ASTM D 3487 specification for electrical insulating oils.

  • Good Oxidation stability helps to extend lubricant service life and reduce maintenance costs
  • Great low temperature performance helps enable easy low temperature start up
  • Industry proven insulating properties

Applications

  • Oil filled electrical equipment such as transformers, load tap chargers, switches, circuit breakers, high voltage capacitors, and lamp ballasts
  • Some EDM (electrical discharge machines) as a coolant and insulator between charged electrodes
  • Applications where a low viscosity mineral oil providing good low temperature properties is required

Specifications

Univolt N 61 B meets or exceed the requirements of:
ASTM D 3487 Type II (2000)

Typical Properties

Univolt N 61 B
Viscosity, cSt, 40C, ASTM D 445 9.2
Viscosity, cSt, 100C, ASTM D 445 2.3
Aniline Point, C, ASTM D 611 75.8
Color, ASTM D 1500 L0.5
Corrosive Sulfur, ASTM D 1275 noncorrosive
Pour Point, C, ASTM D 97 -50
Flash Point, C, ASTM D 92 151
Specific Gravity, D 1298 0.91
Interfacial Tension, 25C, dynes/cm, ASTM D 971 48
Neutralization Number, mg KOH/g, ASTM D 974 0.013
Water, ppm, ASTM D 1533 35
Dielectric Strength, kV, ASTM D 877 30

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