Low-Voltage Circuit-Breaker Behavior under Overload Conditions

Authors

  • L. Dostál Brno University of Technology
  • J. Valenta
  • D. Šimek

DOI:

https://doi.org/10.14311/ppt.2018.1.1

Keywords:

low-voltage circuit-breaker, overload, Holm force, thermal losses, SolidWorks Flow Simulation

Abstract

This article deals with temperature-rise of current path of modern low-voltage circuit-breaker with rotary contact system at overloads and subsequent experimental verification of selected model. The first part describes optimal setting of input conditions of simulation and mainly transient phenomena at contacts causing dynamic change of contact resistances due to change of total contact force, a new challenge to be solved in this contribution. The second part devotes laboratory measurement on prepared sample of the breaker for verification of transient simulation. These simulations are not only important for understanding of rotary system behavior under overloads, but forms an essential part of R & D process due to the speed-up of optimal current path design. In the end, both the financial costs and time effort could be decreased.

References

R. Holm. Electric contacts: theory and applications. Forth edition. New York: Springer, 2000. ISBN 978-3-540-03875-7.

P. G. Slade. Electrical contacts: principles and applications. Second edition. Boca Raton: CRC Press, Taylor & Francis Group, 2014. ISBN 1439881308.

E. Vinaricky at al. AMI DODUCO Data Book of Electrical Contacts. Third edition. AMI DODUCO GmbH, 2010.

O. Havelka. Stavba elektrických přístrojů I. Second edition. Vysoké učení technické v Brně, 1988. ISBN 55-569/1-88.

I. Murashov et al. Analysis of electromagnetic processes inside the arc interrupting system of a high-current circuit breaker. Plasma Physics and Technology, 4(2):161–164, 2017. doi: 10.14311/ppt.2017.2.161.

D. Campos. Handbook on Navier-Stokes equations: theory and applied analysis. First edition. New York: Nova Science Publishers, Physics research and technology, 2016. ISBN 978-1536102925.

D. C. Wilcox. Basic Fluid Mechanics. First edition. DCW Industries, Inc., La Canada, California, 2003. ISBN 1-928729-06-7.

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Published

2018-12-11

Issue

Vol. 5 No. 1 (2018)

Section

Articles

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