打开触点时的物理过程

Electrical Contacts - 1999. Proceedings of the Forty-Fifth IEEE Holm Conference on Electrical Contacts (Cat. No.99CB36343) Pub Date : 1900-01-01 DOI:10.1109/HOLM.1999.795935

V. Samoilov, S. Akachev, V. Kapustin, V. Mestcheryakov

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引用次数: 1

摘要

最近的一篇论文研究了空气中打开触点时大电流电弧不动的原因。结果表明，电弧不动的主要原因是触点材料蒸气、金属液滴和等离子体射流的存在引起的开断速度小和电弧惯性。分析了外磁场对窄电极间隙大电流电弧迁移率的影响。在这种情况下，发现在电流等于2 kA时，电弧不动时间可减少到130 /spl mu/s。

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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Physical processes at opening contacts

A recent paper investigated causes of high current arc immobility at opening contacts in air. It is shown that the main causes of immobility are small breaker opening speed and inertia of arc concerned with the presence of contact material vapors, metal droplets and plasma jets. Influence of external magnetic field on high current arc mobility in narrow interelectrode gap is analyzed. In this case it is found that the time of arc immobility may be decreased to 130 /spl mu/s at current equal to 2 kA.

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Electrical Contacts - 1999. Proceedings of the Forty-Fifth IEEE Holm Conference on Electrical Contacts (Cat. No.99CB36343)

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