NDLI: Evaluation of impregnants designed for all-film power capacitors engineering: Electric conduction and breakdown

Content Provider	IEEE Xplore Digital Library
Author	Brosseau, C.
Copyright Year	1993
Description	Author affiliation: CERMO, Univ. Joseph Fourier, Saint-Martin-d'Heres, France (Brosseau, C.)
Abstract	An experimental study of conduction and breakdown phenomena of M/DBT (monodibenzyltoulene) being used as polypropylene impregnant in the all-film capacitor technology is reported. The liquid electric losses exhibit a strong interfacial dependence when the liquid is in contact with a metallic or a polymer, (either impregnated or dry) interface. Charge-carrier injection in the neighborhood of the interface is the dominant contribution of high-field liquid conductivity. The breakdown phenomena are shown to be related either to high-field conduction or to the presence of particles or to local field enhancements. The dielectric properties of inhomogeneous media constituted by a glassy semicrystalline polymer (polypropylene) impregnated by M/DBT are explored. The measured permittivity is compared to various forms of mixture equations. The closest agreement is obtained with the Lichteneker's logarithmic mixing expression.
Starting Page	195
Ending Page	199
File Size	617667
Page Count	5
File Format	PDF
ISBN	0780308476
ISSN	10716270
DOI	10.1109/EEIC.1993.631044
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-10-04
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power capacitors Design engineering Power engineering and energy Electric breakdown Dielectric measurements Dielectrics and electrical insulation Dielectric liquids Polymers Dielectric materials Dielectric losses
Content Type	Text
Resource Type	Article

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