NBN EN 61868:1999

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

ACTIVE

About this standard

Languages
English and French
Type
NBN Electro
Status
ACTIVE
Publication date
16 March 1999
ICS Code
17.220.99 (Other standards related to electricity and magnetism)
29.040.10 (Insulating oils)
Withdrawn Date
Price
€ 37,00

Summary

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.