ボイド内電界強度および充填剤がエポキシ樹脂中電気トリーの進展特性に与える影響

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2023/02/01

タイトル(英語): Influence of Electric Field and Fillers on Electrical Tree Development in Epoxy Resin

著者名: 川口　哲平（宮崎大学），迫田　達也（宮崎大学），西村　豪志（（株）戸上電機製作所）

著者名(英語): Teppei Kawaguchi (University of Miyazaki), Tatsuya Sakoda (University of Miyazaki), Takeshi Nishimura (Togami Electric Mfg. Co., Ltd.)

キーワード: 部分放電，電気トリー，エポキシ，充填剤　　partial discharge，electrical tree，epoxy resin，filler

要約(英語): We investigate the influence of electric field in a void of epoxy resin with fillers on development of electrical trees. Not only observations of pits and electrical trees but also measurements of temporal variations of the number of partial discharges (PDs) and the PD magnitude were carried out. It was found that PDs with several hundred pC can be measurement by a CT sensor until the obvious formation of an electric tree is achieved in the case of epoxy resin without fillers. Additionally, when electric field of the tip of a pit is the almost same as the withstand electric field of the epoxy resin, electrical tree and breakdown occur in a very short time. The development of electrical tree is disturbed by fillers in epoxy resin, and the required time for breakdown is much longer than that of epoxy resin without fillers.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.143 No.2 （2023）

本誌掲載ページ: 46-53 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/ieejfms/143/2/143_46/_article/-char/ja/