DocumentCode
1842920
Title
Contact welding at break of motor inrush current
Author
Schoepf, Thomas J. ; Rowlands, Robert ; Drew, George
Author_Institution
Delphi Res. Labs, Shelby Township, MI, USA
fYear
2004
fDate
20-23 Sept. 2004
Firstpage
362
Lastpage
369
Abstract
The contact welding phenomena observed at automotive relays at switch-off of a DC motor load during startup was investigated. Contact welding occurred during the first operation and was caused by anodic arcs shorter than 80 microseconds at breaking inrush currents of up to 85 A. The switching performance of the type of relay investigated could be correlated with the parameters: over-travel, release time, and the break current.
Keywords
DC motors; automotive electronics; circuit-breaking arcs; electric welding; electrical contacts; load (electric); relays; starting; switching; 85 A; DC motor inrush current; DC motor load; anodic arcs; breaking inrush currents; contact welding phenomena; startup devices; switch-off automotive relays; switching properties; Automotive engineering; Coils; Contacts; DC motors; Relays; Silver; Surges; Switches; Vehicle dynamics; Welding;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical Contacts, 2004. Proceedings of the 50th IEEE Holm Conference on Electrical Contacts and the 22nd International Conference on Electrical Contacts
Print_ISBN
0-7803-8460-1
Type
conf
DOI
10.1109/HOLM.2004.1353142
Filename
1353142
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