The effects of surface active agents on electric strength of high-voltage capacitor insulation

Author

Komin, S.N. ; Morozov, E.A. ; Fedorov, V.S.

Author_Institution

NOVIK Res. & Prod. Corp., Leningrad State Tech. Univ., USSR

fYear

1991

fDate

8-12 Jul 1991

Firstpage

470

Abstract

Analysis of impregnation conditions of all-film insulation with liquid dielectric showed that for each polymer material it is necessary to select the proper impregnating liquid. It is possible to control the process of wetting by means of surface active agents (surfactants) introduced into the liquid. Surfactants not only can facilitate good impregnation, but they can also increase the breakdown strength of capacitor insulation. Good-quality impregnation provides high electric strength of the insulation. In the case of surfactant application it can also be obtained due to change of near-electrode and bulk processes in the insulation. Proper selection of surfactants can increase the breakdown stress of polypropylene and polyethylene terephthalate by 30-40% with a simultaneous increase of service life by one to three orders of magnitude

Keywords

electric breakdown of solids; electric strength; organic insulating materials; polymer films; power capacitors; wetting; HV type; all-film insulation; breakdown strength; breakdown stress; electric strength; high-voltage capacitor insulation; impregnating liquid; impregnation conditions; liquid dielectric; polyethylene terephthalate; polymer material; polypropylene; surface active agents; wetting control; Capacitors; Dielectric liquids; Dielectric materials; Dielectrics and electrical insulation; Electric breakdown; Plastic insulation; Polyethylene; Polymers; Process control; Stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on

Conference_Location

Tokyo

Print_ISBN

0-87942-568-7

Type

conf

DOI

10.1109/ICPADM.1991.172099

Filename

172099