DocumentCode
1524353
Title
Overheating of flexible tinned copper connectors
Author
Braunovic, Milenko
Author_Institution
MB Interface, Montreal, Que., Canada
Volume
24
Issue
3
fYear
2001
fDate
9/1/2001 12:00:00 AM
Firstpage
384
Lastpage
388
Abstract
Overheating of flexible tinned copper connectors has been observed at a number of power stations. These connectors are used to connect the generator to outgoing busbars and transformers thus serving to counter the effects of vibration and thermal expansion forces. It is shown that the main cause for the observed overheating is a result of a combined action of the high initial contact resistance, fretting, stress relaxation, differential thermal expansion and the formation of intermetallics at the copper-tin interfaces
Keywords
busbars; contact resistance; electric connectors; power transformers; stress relaxation; thermal expansion; wear; differential thermal expansion; flexible tinned copper connectors; fretting; initial contact resistance; intermetallics; outgoing busbars; overheating; power stations; stress relaxation; thermal expansion forces; transformers; vibration; Connectors; Contact resistance; Copper; Counting circuits; Power generation; Thermal expansion; Thermal force; Thermal resistance; Thermal stresses; Transformers;
fLanguage
English
Journal_Title
Components and Packaging Technologies, IEEE Transactions on
Publisher
ieee
ISSN
1521-3331
Type
jour
DOI
10.1109/6144.946484
Filename
946484
Link To Document