Cover IEC 61868:1998
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IEC 61868:1998

Mineral insulating oils - Determination of kinematic viscosity at very low temperatures

Circulation Date: 1998-11
Edition: 1.0
Language: EN-FR - bilingual english/french
Seitenzahl: 21 VDE Artno.: 208370

Content

Specifies a procedure for the determination of the kinematic viscosity of mineral insulating oils, both transparent and opaque, at very low temperatures, after a cold soaking period of at least 20 h, by measuring the time for a volume of liquid to flow under gravity throught a calibrated glass capillary viscometer. Applies at all temperatures to both Newtonian and non-Newtonian liquids having viscosities of up to 20 000 mm2/s.