Study of the curvature of the electrical arc in low voltage breaking devices: influence of the external magnetic field

Abstract : This work is a contribution to the understanding of the electrical arc behaviour in low voltage breaking devices—circuit breakers, contactors, switches and switch-disconnectors. A structured and detailed study based on a bibliographical synthesis of research work on experimental devices, the switching arcs and their mathematical models are presented. According to this study and under the assumption that the flow is stationary, a 3D modelling in the air for a 50 A current intensity is achieved. The external magnetic field is taken into account, which makes it possible to quantify the distortion of the confined electrical arc for each of the breaking devices. Two particular shapes are observed: a 'U' shape in the case of the circuit breaker and an 'S' shape in the case of the contactor, the switch and the switch-disconnector.
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Article dans une revue
Journal of Physics D, 2005, 38, pp.3778-3791. 〈10.1088/0022-3727/38/20/004〉
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https://hal.archives-ouvertes.fr/hal-00018905
Contributeur : Pascal André <>
Soumis le : lundi 13 février 2006 - 10:15:20
Dernière modification le : mardi 11 septembre 2018 - 15:18:46

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Fulbert Baudoin, Jean Jacques Gonzalez, Paul Checchin. Study of the curvature of the electrical arc in low voltage breaking devices: influence of the external magnetic field. Journal of Physics D, 2005, 38, pp.3778-3791. 〈10.1088/0022-3727/38/20/004〉. 〈hal-00018905〉

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