학술논문
Estimation of the properties of contact materials used in vacuum interrupters based on investigations of microdischarge phenomena
Document Type
Conference
Author
Source
Proceedings of IEEE Holm Conference on Electrical Contracts Electrical contacts Electrical Contacts, 1994. Proceedings of the Fortieth IEEE Holm Conference on Electrical Contacts. :39-42 1994
Subject
Language
Abstract
The paper presents electroinsulating properties of vacuum gaps between chosen contact materials used in vacuum interrupters. Cu-Cr25, Cu-Cr50 and W-Cu30 sinter materials were investigated. Typical microdischarge phenomena in the prebreakdown stage were analyzed using an arrangement for partial discharge measurements as well as multichannel analyzers. It has been found that there is a very strong relation between breakdown voltage in vacuum gaps and parameters describing microdischarges.