Gas flow and composition effects on arc motion in current limiting circuit breakers

被引:6
|
作者
Pechrach, K [1 ]
McBride, JW [1 ]
Weaver, PM [1 ]
机构
[1] Univ Southampton, Sch Engn Sci, Electromech Res Grp, Southampton S017 1BJ, Hants, England
来源
PROCEEDINGS OF THE FORTY-SEVENTH IEEE HOLM CONFERENCE ON ELECTRICAL CONTACTS | 2001年
关键词
D O I
10.1109/HOLM.2001.953184
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Arc motion in low voltage (240VAC) high cur-rent (10(3)-10(4) A.) current limiting circuit breakers is dominated by are root mobility. This is strongly affected by the gas flow and gas composition in the contact region, but there is little experimental data on these effects. New pressure and spectral data measurement during arc movement are presented using a Flexible Test Apparatus and an Arc Imaging System. These measurements are used to investigate gas flow characteristics in the are chamber. The chemical and physical phenomena occurring during the arc motion are discussed. The combination of optical and spectral data provides new insight into the arc motion. Also studied are the influences of arc chamber material, contact material, and contact opening speed. These data are used to improve arc control for a low contact opening velocity of 1 ms(-1).
引用
收藏
页码:12 / 17
页数:6
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