Visualization and characterization of high-current diffuse vacuum arcs on axial magnetic field contacts

被引：75

作者：

Schulman, MB ^{[1
]}

Schellekens, H

机构：

[1] Cutler Hammer, Vacuum Interrupter Technol Dept, Horseheads, NY 14845 USA

[2] Schneider Elect, F-38050 Grenoble 9, France

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2000年 / 28卷 / 02期

关键词：

arc modes; arc voltage; axial magnetic field (AMF) contacts; diffuse vacuum arc; vacuum interrupter;

D O I：

10.1109/27.848103

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We have investigated the behavior of drawn vacuum arcs for several designs of axial magnetic field (AMF) contacts using high-speed digital photography and are voltage measurements. As the peak current was increased, a gradual transition occurred in the are appearance from a multiple cathode-spot are to the high-current diffuse mode, and then to a high-current diffuse columnar mode. Two relatively simple models based on the literature are used to explain the results. The first is an empirical criterion for using the are voltage behavior to determine the maximum are current for which an AMF geometry can produce a high-current diffuse mode from the initial bridge column are. The second model predicts the highest are current that can be forced into a fully diffuse mode for given values of the AMF and the contact arcing radius. The predictions of these models are compared to our experimental and analytical results.

引用

页码：443 / 452

页数：10

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