磁气动力对微型断路器电弧运动的影响

Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts Pub Date : 1993-09-27 DOI:10.1109/HOLM.1993.489663

P. Weaver, J. McBride

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引用次数: 34

摘要

本文介绍了在短路条件下微型断路器电弧腔内的磁场和大气环境的新结果。有限元磁场计算提供了电弧室内磁通密度和电弧室周围放置钢板的影响的数据。磁场计算采用一维流动模型来评估磁场环境对电弧动力学的影响。结果与利用光纤成像系统在生产微型断路器上获得的电弧动力学新实验数据进行了比较。电弧室内环境的附加信息由压力和电导测量提供。结果表明，电弧室两侧钢的存在对磁场和电弧动力学有较大的影响。等离子体射流和压力波的形成对电弧室的大气条件有显著影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Magnetic and gas dynamic effects on arc motion in miniature circuit breakers

This paper presents new results on the magnetic and atmospheric environment in the arc chamber of a miniature circuit breaker under short circuit conditions. Finite element magnetic field calculations provide data on the flux density in the arc chamber and the effects of steel plates placed around the arc chamber. The magnetic calculations are used with a one-dimensional flow model to assess the influence of the magnetic environment on the arc dynamics. The results are compared with new experimental data on arc dynamics obtained using an optical fibre imaging system in a production miniature circuit breaker. Additional information on the environment within the arc chamber is supplied by pressure and conductance measurements. Results show that the presence of steel in the sides of the arc chamber has a large effect on the magnetic field and the arc dynamics. Plasma jet and pressure wave formation have a significant effect on atmospheric conditions in the arc chamber.

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Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts

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