Monitoring of electrical properties of particulate filled epoxy resins under corrosive stress

Author

Brühl, Bodo ; Niemeyer, Lutz

Author_Institution

ASEA Brown Boveri, Baden-Dattwil, Switzerland

fYear

1993

fDate

4-7 Oct 1993

Firstpage

13

Lastpage

16

Abstract

Particulate filled epoxy resins are used as dielectric insulation materials. Investigations of the electrical surface conductance of silica (SiO₂) and alumina (Al₂O₃) filled epoxy resins in corrosive atmospheres under DC and AC stress are reported. The influence of the corrosion parameters on the conductivity is discussed. The experimental data are used to identify the surface conduction mechanism, and a thermal flashover criterion is derived. It relates the surface conductance to the maximal voltage stress

Keywords

epoxy insulation; AC stress; Al₂O₃; DC stress; SiO₂; alumina; corrosion parameters; corrosive atmospheres; corrosive stress; dielectric insulation materials; electrical surface conductance; maximal voltage stress; particulate filled epoxy resins; silica; thermal flashover; Atmosphere; Conducting materials; Conductivity; Corrosion; Dielectric materials; Dielectrics and electrical insulation; Epoxy resins; Monitoring; Silicon compounds; Thermal stresses;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Electronics Insulation Conference and Electrical Manufacturing & Coil Winding Conference, 1993. Proceedings., Chicago '93 EEIC/ICWA Exposition

Conference_Location

Chicago, IL

ISSN

1071-6270

Print_ISBN

0-7803-0847-6

Type

conf

DOI

10.1109/EEIC.1993.630923

Filename

630923