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Contribution à la modélisation d'un arc électrique dans les appareils de coupure basse tension

Abstract : This work is a contribution to the modelling of an electrical arc in the low voltage
breaking devices: circuit breaker, contactor, switch and switch-disconnector. The 2D
modelling of free burning argon made it possible to validate the numerical code and to study
the influence of the geometrical, physical and numerical parameters on the physical variables
of thermal plasma. According to this study, a 3D modelling in a stationary flow of an
electrical arc in the air with an intensity of 50 A is realized for each breaking devices. The
angle of the aperture of the contacts and the presence of the current feeds are considered. Two
particular shapes are analyzed: a shape in "U" in the case of the circuit breaker and a shape in
"5"' in the case of the contactor, the switch and the switch-disconnector. The results show the
influence of an external magnetic field on the curve, the shape of the electric arc.
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https://tel.archives-ouvertes.fr/tel-00011591
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Submitted on : Monday, February 13, 2006 - 10:34:48 AM
Last modification on : Thursday, January 11, 2018 - 6:16:18 AM
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  • HAL Id : tel-00011591, version 1

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Fulbert Baudoin. Contribution à la modélisation d'un arc électrique dans les appareils de coupure basse tension. Autre. Université Blaise Pascal - Clermont-Ferrand II, 2004. Français. ⟨tel-00011591⟩

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