Breakdown of LDPE Film under Heavy Water Absorption II

カテゴリ: 全国大会

論文No: 2-038

グループ名: 【全国大会】平成21年電気学会全国大会論文集

発行日: 2009/03/15

タイトル(英語): Breakdown of LDPE Film under Heavy Water Absorption II

著者名: eka putra waldi (豊橋技術科学大学),村上義信 (豊橋技術科学大学),穂積穂積 (愛知工業大学),長尾雅行 (豊橋技術科学大学)

キーワード: 放電|部分放電|絶縁

要約(日本語): In this report, the effect of water absorption on the electrical breakdown of Low density polyethylene (LDPE) film using DC ramp voltage was studied by observing correlation between breakdown strength and the conduction current density as a function of water immersion.It is remarkable that the breakdown strength decreased when it was dipped into water for more than 60 days. It suggests that the insulation, which passed the initial withstand voltage test, may loose its performance very quickly, depending on the condition. It is known that the absorption of water by a polymer material depends on its hydrophilic property. Polyethylene is one of very hydrophobic materials. Considering that the influence of heavy water absorption was significant with polyethylene, some other materials with higher hydrophilic property may loose their insulation performance much more quickly.

原稿種別: 日本語

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