The Characteristics of Vacuum Arc in the Process of DC Interruption Using Butt Contacts and TMF Contacts
The Characteristics of Vacuum Arc in the Process of DC Interruption Using Butt Contacts and TMF Contacts
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DOI：
10.1109/tps.2014.2320574
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发表时间：
2014-05
影响因子：
1.5
通讯作者：
Luhui Liu;Jinwu Zhuang;Guoshun Xu;Chao Zhang-;Zhuangxian Jiang;Jin Wu
中科院分区：
文献类型：
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作者：
Luhui Liu;Jinwu Zhuang;Guoshun Xu;Chao Zhang-;Zhuangxian Jiang;Jin Wu
真空灭弧室在直流开断中的应用突出了触头设计和电弧行为的相互依赖性。在这项研究中，绘制的真空电弧在直流负载电流中断过程中，使用对接触头和商业横向磁场（磁场）触头的特点进行了记录与高速摄像机。在抽拉真空电弧中，电弧序列开始于熔融金属桥断裂后形成的一个或两个桥弧柱。平行列在对接接触观察不到一半的试验，而一个中间阶段的两个平行列总是发现在平行接触。开断试验表明，双柱模式的电弧占有面积大，开断能力强。讨论了触头上的槽对电弧形态的影响。可以得出结论，对于5 kA以下的直流负载电流中断，如果需要较短的断开时间（<;1 ms），则优先选择双触点;如果不需要特殊的断开时间，则优先选择对接触点。
The application of vacuum interrupters in dc current interruption highlights the interdependence of the contact design and the arc behavior. In this investigation, the characteristics of drawn vacuum arc in the process of dc load current interruption using butt contacts and a commercial transverse magnetic field (TMF) contacts were recorded with a high-speed camera. In a drawn vacuum arc, the arc sequence began with one or two bridge arc columns formed after the rupture of the molten metal bridge. Parallel columns in the butt contact were observed for not more than half of the trials, whereas an intermediate stage of two parallel columns was always found in the TMF contact. The interruption tests indicated that the arc in two columns mode occupied more surface had higher interrupt capability. The role of the slots on TMF contact to the arc appearance was discussed. It can be concluded that, for dc load current interruptions below 5 kA, if a short break time (<;1 ms) is required, a TMF contact is preferred; if there is no special break time required then a butt contact is preferred.