NDLI: Interruption capability and decomposed gas density of CF<sub>3</sub>I as a substitute for SF<sub>6</sub> gas

Content Provider	IEEE Xplore Digital Library
Author	Kasuya, H. Kawamura, Y. Mizoguchi, H. Nakamura, Y. Yanabu, S. Nagasaki, N.
Copyright Year	1994
Abstract	We investigated the fundamental characteristic of CF₃I as a substitute gas for SF₆. CF₃I has lower global warming potential. The use of pure CF₃I in gas-insulated switchgear and gas circuit breakers is difficult because liquid CF₃I has a high boiling point. We therefore mixed CF₃I with CO₂ or N₂. In short line fault (SLF, 1 kA_peak) and breaker terminal fault (BTF, 3 kA_peak) interruption, the performance of CF₃I-CO₂ approximated that of pure CF₃I when the proportion of CF₃I exceeded 30%. However, for BTF (20 kA_peak) interruption, the performance of CF₃I-CO₂ remarkably decreased. In loop current interruption for disconnecting switches, CF₃I-CO₂ (30%/70%) was successfully used 200 times for 4000 A. We also measured CF₃I spectra. Investigation of the decomposed gas density after current interruption revealed that fluorine release from CF₃I was less than that from SF₆. Iodine density released from CF₃I-CO₂ (30%/70%) was approximately one-third of that released from pure CF₃I. In addition, iodine could be removed using an adsorbent.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
File Size	1763205
File Format	PDF
ISSN	10709878
Volume Number	17
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Global warming Geographic Information Systems Switchgear Circuit breakers Circuit faults Gas insulation Switches Current measurement Dielectric breakdown Electric breakdown
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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Investigation of the performance of CF₃I Gas as a Possible Substitute for SF₆

BTF interruption capability of CF3I-CO2 mixture

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Investigation of Dielectric Recovery Characteristiics of Hot SF6 Gas After Current Interruption for Developing New 300 kV and 550 kV Gas Circuit Breakers

Interruption capability and decomposed gas density of CF₃I as a substitute for SF₆ gas

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