In this study, experiments pertaining to direct current (DC) interruptions are performed in an arc-quenching chamber filled with silica sand. First, the arc column resistance is measured during DC arc-quenching to demonstrate the elementary aspects of the arc in the silica-sand-filled space. Subsequently, an arrangement comprising a polymer cylinder between electrodes in the silica-sand-filled space is proposed to increase the arc column resistance during DC arc-quenching. A polymethyl methacrylate (PMMA) cylinder is used in the experiments. Measurement results indicate that the arrangement of the PMMA cylinder causes the arc column resistance to increase approximately twofold in comparison with the no-PMMA cylinder arrangement. Finally, the effect of increasing the arc column resistance is discussed in terms of PMMA and silica vapor. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

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通过硅砂中聚合物圆筒的布置增加直流淬火期间的电弧柱电阻

在这项研究中，与直流（DC）中断有关的实验是在装有硅砂的灭弧室中进行的。首先，在直流灭弧过程中测量电弧柱电阻，以证明填充硅砂的空间中电弧的基本情况。随后，提出了一种在石英砂填充的空间中的电极之间包括聚合物圆柱体的布置，以在DC灭弧期间增加弧柱电阻。实验中使用了聚甲基丙烯酸甲酯（PMMA）圆柱体。测量结果表明，与无PMMA圆柱体布置相比，PMMA圆柱体的布置使电弧柱电阻增加了大约两倍。最后，从PMMA和二氧化硅蒸气的角度讨论了提高电弧柱电阻的效果。©2021日本电气工程师学会。由Wiley Periodicals LLC发布。