Appearance of Vacuum Arc Under Different Gap Length

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Appearance of Vacuum Arc Under Different Gap Length

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- Appearance of Vacuum Arc Under Different Gap Length
- High VoltageApparatus Issue 4, Pages: 22-25(1997)
- 作者机构：
  
  1.   华中理工大学
  2.   大连理工大学
  3.   西安交通大学 430074
  4.   116024
  5.   710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM503.5
- Published：1997
- 稿件说明：
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[1]武建文,王毅,王季梅.不同触头开距下真空电弧现象的研究[J].高压电器,1997(04):22-25.

Appearance of Vacuum Arc Under Different Gap Length[J]. High voltageapparatus, 1997, (4): 22-25.
[1]武建文,王毅,王季梅.不同触头开距下真空电弧现象的研究[J].高压电器,1997(04):22-25. DOI：

Appearance of Vacuum Arc Under Different Gap Length[J]. High voltageapparatus, 1997, (4): 22-25. DOI：

摘要

利用动态图象高速微机采集系统

对纵向磁场线圈触头真空电弧形态进行了研究

触头开距从10mm到40mm变化

得出在相同电弧电流下

电弧扩散区域随开距增加而增加;电弧电压随开距增加而呈线性增加;弧柱电弧电场强度随开距增加而减少。这说明在长开距下

由于弧柱表面积增加

扩散到弧柱外的电子、离子和金属粒子相应增多

因而使输入到弧隙的能量增加以加热触头表面和加强粒子的扩散。

Abstract

The appearance of vacuum arc is studied using an image sampling system with high speed. In the experiment

axial magnetic field contacts are used and the gap length changes from 10mm to 40mm. With the gap length increasing the area of arc spreading increases. At same arc current

the arc voltage is proportional to the gap length. With larger gap length the diffusing electrons

ions and metal material from arc column have an extra increase because of the adding surface of the arc column. The extra arc energy has to be afforded to heating the areas of contact

and increasing diffusing particles.

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