DocumentCode
2929960
Title
A method to analyze the short-time withstand current capability for air circuit breaker
Author
Chen, Kena ; Che, Degui ; Li, Xingwen ; Jia, Shenli
Author_Institution
State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ., Xi´´an, China
fYear
2011
fDate
23-27 Oct. 2011
Firstpage
182
Lastpage
186
Abstract
A method to analyze the short-time withstand current for air circuit breaker (ACB) is presented. The cylindrical contact bridge is adopted to describe the current constriction between the movable and fixed contacts, and then the corresponding electromagnetic force and temperature rise of the contacts are calculated. Finally, the short-time withstand current capability could be evaluated based on the temperature rise of the contacts. In addition, the influence of the number of the contacts, the contact force and contact size on the short-time withstand current capability is analyzed.
Keywords
circuit breakers; electric current; electrical contacts; electromagnetic forces; air circuit breaker; contact force; contact size; current constriction; cylindrical contact bridge; electromagnetic force; short time withstand current capability; Circuit breakers; Conductors; Electromagnetic forces; Force; Heating; Temperature;
fLanguage
English
Publisher
ieee
Conference_Titel
Electric Power Equipment - Switching Technology (ICEPE-ST), 2011 1st International Conference on
Conference_Location
Xi´an
Print_ISBN
978-1-4577-1273-9
Type
conf
DOI
10.1109/ICEPE-ST.2011.6122964
Filename
6122964
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