Title :
Estimation of properties of contact materials used in vacuum interrupters based on investigations of the microdischarge phenomenon
Author :
MoScicka-Grzesiak, Hanna ; Ziomek, Waldemar ; Siodla, Krzysztof
Author_Institution :
Inst. of Electr. Power Eng., Poznan, Poland
fDate :
6/1/1995 12:00:00 AM
Abstract :
The paper presents electroinsulating properties of the vacuum gap between chosen contact materials used in vacuum interrupters. Cu-Cr25, Cu-Cr50, W-Cu30 sinter materials were investigated. Microdischarges-typical phenomena in the pre-breakdown stage were analyzed using the arrangement for partial discharge measurements as well as the multichannel analyzer. It has been noted that there is a very strong relation between the breakdown voltage in the vacuum gap and parameters describing microdischarges
Keywords :
chromium alloys; copper alloys; electrical contacts; partial discharges; tungsten alloys; vacuum interrupters; CuCr; WCu; breakdown voltage; contact materials; electroinsulating properties; microdischarge phenomenon; multichannel analyzer; partial discharge measurements; pre-breakdown stage; sinter materials; vacuum gap; vacuum interrupters; Cathodes; Charge measurement; Circuits; Current measurement; Electric breakdown; Electrodes; Electron emission; Interrupters; Vacuum breakdown; Voltage measurement;
Journal_Title :
Components, Packaging, and Manufacturing Technology, Part A, IEEE Transactions on
