Influence of materials on the interaction of switching arcs with contacts and walls

Author

Rieder, W. ; Veit, C.

Author_Institution

Tech. Univ. of Vienna, Austria

fYear

1990

fDate

20-24 Aug 1990

Firstpage

592

Lastpage

598

Abstract

The interaction of magnetically blown break arcs with the contacts and the walls of the arc chamber was investigated in a model switch. Both the influence of the materials (of the contacts and of the insulating walls) on the arc behavior and the influence of the switching arc on the resistance against arcing of the wall materials were studied. The initial time of reduced arc motion, material losses, surface resistance, and flashover voltage of the insulating walls were the measurement criteria used. Arc motion call be effectively inhibited by gassing walls, depending on the contact material and design parameters. The value of the flashover voltage of the walls decreases with increasing numbers of operations, and also depends on contact and wall materials

Keywords

circuit-breaking arcs; flashover; surface discharges; arc behavior; arc chamber; arc contacts interaction; arc insulating walls interaction; contact material; design parameters; flashover voltage; interaction of switching arcs with contacts; magnetically blown break arcs; material losses; measurement criteria; model switch; surface resistance; time of reduced arc motion; wall degassing; wall materials; Contact resistance; Electrical resistance measurement; Flashover; Insulation; Loss measurement; Magnetic materials; Magnetic switching; Surface resistance; Switches; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Contacts, 1990. Proceedings of the Thirty-Sixth IEEE Holm Conference on ... and the Fifteenth International Conference on Electrical Contacts

Conference_Location

Montreal, Que.

Type

conf

DOI

10.1109/HOLM.1990.113064

Filename

113064