Title :
Behaviour of industrial insulating liquids under very high electric stress
Author_Institution :
Prodelec Res. Lab., Pierre-Benite, France
Abstract :
From a theoretical viewpoint it is shown that low-permittivity liquids are preferable as insulation impregnants when low dissipation factors are requested. It was confirmed by tests on capacitors that they lead to better thermal stability. Tests performed on capacitor micromodels show the influence of viscosity and aromaticity, and to a lesser extent chemical structure, on the liquid performances under very high stress. Tests performed on all types of capacitors were in agreement with these results
Keywords :
electric breakdown of liquids; insulating materials; permittivity; viscosity of liquids; aromaticity; dissipation factors; electric stress; industrial insulating liquids; insulation impregnants; liquid performances; low-permittivity liquids; micromodels; thermal stability; viscosity; Capacitors; Dielectric liquids; Dielectrics and electrical insulation; Impurities; Partial discharges; Permittivity; Testing; Thermal conductivity; Thermal stresses; Viscosity;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
Conference_Location :
Beijing
DOI :
10.1109/ICPADM.1988.38331
