低圧気中開閉器におけるDCアークによる開極開始直後の銀接点消耗特性

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2019/05/01

タイトル(英語): Characteristics of Ag Contact Erosion at Beginning of Break due to DC Arc in Low Voltage Switches

著者名: 堀田　克輝（三菱電機（株）先端技術総合研究所），渡邉　真也（三菱電機（株）先端技術総合研究所），稲口　隆（三菱電機（株）先端技術総合研究所）

著者名(英語): Katsuki Hotta (Advanced Technology R&D Center, Mitsubishi Electric Corp.), Shinya Watanabe (Advanced Technology R&D Center, Mitsubishi Electric Corp.), Takashi Inaguchi (Advanced Technology R&D Center, Mitsubishi Electric Corp.)

キーワード: アーク，接点，消耗，低圧，開閉器　　arc，contact，erosion，low-voltage，switch

要約(英語): This paper describes a basic mechanism of Ag contact erosion by DC arc at the beginning of the contact break in low-voltage switch. We focused on the relationship between the contact erosion and the arc duration, and found that there is the contact erosion Mb, which is generated immediately after the start of break and does not depend on the arc duration but depends on approximately square of the current at the start of break. We considered that the Mb is the contact erosion due to the bridge formation at the beginning of the break, and the bridge formation depends on electrode heating at the final contact point. We also clarified the rate of the contact erosion at the beginning of the break is large against the total contact erosion. Especially, this rate reaches 90% in maximum case of this paper.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.139 No.5 （2019） 特集：雷・熱プラズマ・アーク技術の最新動向

本誌掲載ページ: 287-292 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/139/5/139_287/_article/-char/ja/