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3-D finite element analysis of magnetic force on the arc forarc chamber design of molded case circuit breaker*

Published online by Cambridge University Press:  15 June 2001

Kee-Joe Lim ,
Seong-Hwa Kang ,
Un-Yong Lee  and
Hee-Chan Song
Kee-Joe Lim*
Affiliation:
Dept. of Electrical Engineering, Chungbuk National University, Korea
Seong-Hwa Kang
Affiliation:
Dept. of Industrial Safety Engineering, Chungcheong College, Korea
Un-Yong Lee
Affiliation:
Dept. of Electrical Engineering, Chungbuk National University, Korea
Hee-Chan Song
Affiliation:
Dept. of Electrical Engineering, Chungbuk National University, Korea
*
kjlim@trut.chungbuk.ac.kr
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Abstract

It is necessary for the optimum design of arc quenching chamber in the molded case circuit breakers to analyze magnetic force acting on the arc in the chamber. The magnetic blowout forces and the distribution of magnetic field induced by arc current depend on the shape, arrangement, and kinds of material of grids in the chamber. The effective method to design V-slotted iron grid in the arc quenching chamber is discussed in this paper. The magnetic blowout force and flux density were obtained by using the 3-D finite element method considering non-linearity of iron grids. The grid model designed optimally was also verified by means of the interruption performances test. It is shown that our design method is a useful tool for design of arc quenching chamber in the circuit breakers.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 14 , Issue 3 , June 2001 , pp. 183 - 186
Copyright
© EDP Sciences, 2001

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Footnotes

*

This paper has been presented at NUMELEC 2000.

References

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