Title :
Development of new electrode system for measurement of high field dielectric properties near breakdown field
Author :
Fujii, Masayuki ; Tohyama, Kazuyuki ; Tokoro, Tetsuro ; Mizuno, Yukio ; Nagao, Masayuki ; Kosaki, Masamitsu
Author_Institution :
Oshima Nat. Coll. of Maritime Technol., Yamaguchi, Japan
Abstract :
In order to study the high field AC conduction mechanism near breakdown field, a new electrode system was developed using an evaporated polypropylene (PP) guard film. Using this technique high field dielectric properties of a biaxially oriented polypropylene (BOPP) film near breakdown field could be measured. The improved new electrode system enables the measurement of tanδ in an electric field region 100kVrms/mm higher than for the usual method, because there are no air voids between the sample film and the evaporated PP guard film. Furthermore we could measure the tanδ and the dissipation current to about 270 kVrms/mm, using a fast rising AC ramp voltage application technique
Keywords :
dielectric losses; electric breakdown; high field effects; organic insulating materials; polymer films; biaxially oriented polypropylene; breakdown field; dissipation current; evaporated polypropylene guard film; fast rising AC ramp voltage; high field AC conduction; high field dielectric properties; new electrode system; Dielectric breakdown; Dielectric measurements; Dielectrics and electrical insulation; Educational institutions; Electric fields; Electrodes; Partial discharge measurement; Partial discharges; Polymers; Thickness measurement;
Conference_Titel :
Electrical Insulating Materials, 1998. Proceedings of 1998 International Symposium on
Conference_Location :
Toyohashi
Print_ISBN :
4-88686-050-8
DOI :
10.1109/ISEIM.1998.741748
