NDLI: Interruption capability of CF/sub 3/I Gas as a substitution candidate for SF/sub 6/ gas

Content Provider	IEEE Xplore Digital Library
Author	Taki, M. Maekawa, D. Odaka, H. Mizoguchi, H. Yanabu, S.
Copyright Year	1994
Abstract	We studied the interruption performance of CF₃I gas because its environmental effect is smaller than that of SF₆ gas with a model arc-extinguishing chamber. First, we measured the arc time constant and arc power loss coefficient using Mayr's equation. Comparing CF₃I with other gases, the arc time constants are SF₆<CF₃I<CO₂< H₂<Air<N₂. The arc power loss coefficient is H₂>SF₆ >CO₂>Air>N₂>CF₃I. Next, we evaluated the short line fault (SLF) interruption capability by measuring the di/dt-dv/dt characteristic. Consequently, the SLF interruption performance of pure CF₃I was about 0.9 times that of SF₆. However, CF₃I application to gas insulated switchgear (GIS) and gas circuit breakers (GCB) is difficult because the liquefying temperature of the gas is high. Therefore, we adopted a countermeasure to obtain a lower liquefying temperature mixing CF₃I with CO₂. The result showed that the SLF interruption performance of the mixture approximated that of pure CF₃I when the ratio of CF₃I exceeds 20%
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	635706
File Format	PDF
ISSN	10709878
Volume Number	14
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power measurement Loss measurement Temperature Time measurement Equations Gases Circuit faults Gas insulation Switchgear Geographic Information Systems
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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

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