Influence of electrodes temperature on electrical strength of vacuum gap under AC voltages

Author

Opydo, W. ; Grzybowki, S. ; Jacob, P.B.

Author_Institution

Wydzial Elektryczny, Politech. Poznanska, Poland

fYear

1988

fDate

5-8 June 1988

Firstpage

81

Lastpage

84

Abstract

Results of investigations of the electrical strength of a vacuum gap a temperature range of 203-373 K under AC voltage are presented. Plane electrodes with rounded-off edges, of Rogowski´s profile, have been used for the investigations. The electrodes had diameters of 150 mm and were made of copper, aluminium and stainless steel. It was found that cooling the electrodes from 293 to 203 K slightly increased the breakdown voltage, and heating the electrodes from 293 to 373 K slightly decreased the breakdown voltage. The electrode temperature effect was larger for the aluminium electrodes and smallest for the stainless steel electrodes.<>

Keywords

electric strength; insulation; spark gaps; 150 mm; 203 to 373 K; AC voltages; Al; Cu; FeCrC; Rogowski´s profile; breakdown voltage; breakdown voltage change; cooling; diameters; electrical strength; electrodes temperature; heating; plane electrodes; rounded-off edges; stainless steel; temperature effect; temperature range; vacuum gap; vacuum insulation; Aluminum; Breakdown voltage; Copper; Dielectrics and electrical insulation; Electrodes; Jacobian matrices; Steel; Temperature distribution; Testing; Vacuum breakdown;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 1988., Conference Record of the 1988 IEEE International Symposium on

Conference_Location

Cambridge, MA, USA

ISSN

1089-084X

Type

conf

DOI

10.1109/ELINSL.1988.13872

Filename

13872