DocumentCode
1219889
Title
Motion of high-current vacuum arcs on spiral-type contacts
Author
Dullni, Edgar
Author_Institution
CALOR-EMAG, Ratingen, West Germany
Volume
17
Issue
6
fYear
1989
fDate
12/1/1989 12:00:00 AM
Firstpage
875
Lastpage
879
Abstract
Motion of vacuum arcs on spiral-type contacts is not only controlled by self-induced magnetic fields, but also by heating phenomena. An expression is derived which permits the calculation of the speed of the arc from a computation of the time needed to heat the surface up to boiling temperature. The heat flux density of the constricted arc at the anode is required as input for the calculation. Good coincidence is achieved with experimental data. The speed of the arc varies from 5 to 400 m/s, depending on experimental conditions
Keywords
arcs (electric); arc speed; boiling temperature; heat flux density; heating; high-current vacuum arcs; motion; self-induced magnetic fields; spiral-type contacts; Anodes; Heating; Lorentz covariance; Magnetic fields; Magnetic flux; Mirrors; Photography; Spirals; Temperature control; Vacuum arcs;
fLanguage
English
Journal_Title
Plasma Science, IEEE Transactions on
Publisher
ieee
ISSN
0093-3813
Type
jour
DOI
10.1109/27.41226
Filename
41226
Link To Document