Arc immobility and erosion phenomena in low pressure air

Author

Li-Chun, Cheng ; Bu-Yun, Wang

Author_Institution

Dept. of Electr. Power Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

1990

fDate

20-24 Aug 1990

Firstpage

561

Lastpage

568

Abstract

By using an experimental model of switching contacts in a demountable arc chamber, the initial immobility, edge immobility, and electrode erosion of switching arcs under a condition of low atmospheric pressure of 0.1 to 0.048 MPa in air (corresponding to the atmospheric pressure range of 0-6 km above sea level) were experimentally investigated. The results show that when the atmospheric pressure is reduced the initial immobility time of the arc increases, arc immobility time at the edge of contacts increases and arc erosion of contacts increases

Keywords

air; circuit-breaking arcs; 0.1 to 0.048 MPa; arc erosion of contacts increases; arc erosion phenomena; arc immobility; arc immobility time; demountable arc chamber; electrode erosion; experimental model; initial immobility time; low atmospheric pressure; low pressure air; magnetically driven arcs; switching arcs; switching contacts; Contacts; Electrodes; Magnetic fields; Magnetic separation; Rough surfaces; Sea level; Sea surface; Surface roughness; Switches; Testing;

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.1990.113059

Filename

113059