A study on thermal‐interrupting performance improvement of SF6 gas circuit breaker by promotion of nozzle ablation. Issue 5 (18th February 2020)

• Record Type: Journal Article
• Authors: Sato, Motohiro; Horinouchi, Katsuhiko; Hiza, Shuichi; Kawana, Takashi; Nakamura, Yasunori; Yoshitomo, Yuji; Shimizu, Yoshinori; Yokomizu, Yasunobu
• Is Part Of: IEEJ transactions on electrical and electronic engineering. Volume 15:Issue 5(2020)
• Page Start: 775
• Page End: 780
• Publication Date: 2020-02-18
• Subjects: GCB -- SF6 arc -- nozzle -- polymer ablation -- pressure rise -- thermal interrupting capability; Electrical engineering -- Periodicals; Electronics -- Periodicals; 621.3
• DOI: 10.1002/tee.23116
• Languages: English
• ISSNs: 1931-4973

Abstract

Abstract : In this paper, ablation polymer was studied to improve the thermal interrupting performance of an SF6 gas circuit breaker. One kind of polymer was used as the ablation polymer on the basis of the specific constraint conditions for SF6 gas circuit breakers, such as not including hydrogen, and its ablation characteristics were investigated. Furthermore, the dominant factor of that polymer ablation was discussed by comparing ablated mass characteristics between the ablation polymer and polytetrafluoroethylene, which is widely used as the nozzle material of an SF6 gas circuit breaker. © 2020 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.