DocumentCode
1390426
Title
Erosion of contacts by arcing
Author
El-Koshairy, M.A.B. ; Khalifa, M. ; Aboul-Makarem, F.
Author_Institution
University of Cairo, Department of Electrical Engineering, Cairo, Egypt
Volume
108
Issue
37
fYear
1961
fDate
2/1/1961 12:00:00 AM
Firstpage
70
Lastpage
74
Abstract
The effect of the current waveshape on the rate of arc erosion is studied for currents of 180-1090 amp, with contacts of molybdenum, steel and a sintered mixture of tungsten and copper. The amount of arc erosion is found to increase with the current amplitude for a constant arc charge. It is not linearly proportional to either the arc charge or its current amplitude. It increases with the current amplitude at an increasing rate over the range of tests. It is found to be sensitively affected by the contact separation in the millimetre range.
Keywords
arcs (electric); electrical contacts;
fLanguage
English
Journal_Title
Proceedings of the IEE - Part A: Power Engineering
Publisher
iet
ISSN
0369-8882
Type
jour
DOI
10.1049/pi-a.1961.0019
Filename
5242775
Link To Document