Title :
Effect of partial discharges on impregnated polypropylene films
Author :
Nemamcha, M. ; Gosse, J.P. ; Gosse, B.
Author_Institution :
Lab. d´´Electrostatique et de Mater. Dielectr., CNRS, Grenoble, France
fDate :
8/1/1994 12:00:00 AM
Abstract :
The effect of partial discharges in benzyltoluene upon impregnated polypropylene films has been studied in a sphere/plane electrode geometry. It is shown that discharges even with a small apparent charge (~1 pC) cause a significant decrease of the breakdown strength of the film. The addition of an epoxy compound to the liquid notably reduces the film degradation characterized by the breakdown voltage, in spite of the increase of the repetition rate and apparent charge of the discharges
Keywords :
composite insulating materials; electric breakdown of solids; electric strength; electrodes; organic insulating materials; partial discharges; polymer films; apparent charge; benzyltoluene; breakdown strength; breakdown voltage; film degradation; impregnated polypropylene films; partial discharges; repetition rate; sphere/plane electrode geometry; Capacitors; Degradation; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Fault location; Geometry; Helium; Partial discharges; Voltage;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
