Title :
Low temperature viscosity behavior of transformer oils
Author :
Oommen, T.V. ; Grune, G.L.
Author_Institution :
Inst. of Transmission Technol., ABB Power T&D Co. Inc., Raleigh, NC, USA
Abstract :
This paper describes viscosity studies on several transformer oils and oil substitutes such as silicone fluid. Both kinematic and dynamic viscosities were measured. The temperature range studied included -40°C to +20°C. Viscosity-temperature plots indicated a linear correlation. At very low shear rates, the dynamic viscosity behavior was close to that of the kinematic viscosity. This data is useful in selecting oils for cold climate applications
Keywords :
insulation testing; power transformer insulation; power transformer testing; shear flow; transformer oil; viscosity; viscosity measurement; -40 to 20 C; cold climate applications; dynamic viscosities; kinematic viscosities; linear correlation; low temperature viscosity behavior; shear rate; silicone fluid; transformer oils; viscosity-temperature plots; Cooling; Fluid dynamics; Glass; Kinematics; Oil insulation; Petroleum; Size measurement; Stress; Temperature distribution; Viscosity;
Conference_Titel :
Electrical Electronics Insulation Conference, 1995, and Electrical Manufacturing & Coil Winding Conference. Proceedings
Conference_Location :
Rosemont, IL
Print_ISBN :
0-941783-15-4
DOI :
10.1109/EEIC.1995.482348
