3-Dimensional Electromagnetic Forces Analysis and Current Interrupting Ability of Spiral Type Electrodes in Vacuum Circuit Breakers.

• SATO Takashi

  Electric Power Delivery Systems Dept., Power & Industrial Systems R & D Laboratory, Hitachi, Ltd.

Bibliographic Information

Other Title

• 真空遮断器スパイラル形電極の三次元電磁力解析と電流遮断性能
• シンクウ シャダンキ スパイラルケイ デンキョク ノ 3ジゲン デンジリョク カイセキ ト デンリュウ シャダン セイノウ

Abstract

Electromagnetic forces of two spiral type electrodes (type A and type B) in vacuum circuit breakers were analyzed in 3 dimensions by FEM (Finite Element Method). Then, these electromagnetic forces were related to the results of current interrupting ability tests. The analysis showed that an arc was ignited on contact electrode type A experienced 0.3 to 2.9 × 10^-7 N/A² circumferential electromagnetic force and 1.0 to 2.1 × 10^-7 N/A² radial electromagnetic force. An arc was ignited on contact electrode type B also experienced 0.0 to 1.3 × 10^-7 N/A² circumferential electromagnetic force and 1.1 to 2.2 × 10^-7 N/A² radial electromagnetic forces.<BR>It was concluded from current interrupting tests that electrode type A had an current interrupting ability of 49.0 or 58.6 kA and electrode type B had an ability of 31.2 or 32.7 kA. Comparison of the current interrupting ability with the electromagnetic forces experienced showed the larger the electromagnetic forces, the higher the current interrupting ability.

Journal

• Shinku

  Shinku 43 (1), 24-31, 2000

  The Vacuum Society of Japan

Keywords

• Electrical and Electronic Engineering
• Surfaces, Coatings and Films
• Condensed Matter Physics

Details

• CRID: 1390282679041793024
• NII Article ID: 10004561242
• NII Book ID: AN00119871
• DOI: 10.3131/jvsj.43.24
• ISSN: 18809413
• ISSN: 05598516
• NDL BIB ID: 4980848
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4980848
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed