H. Jung, Je Uk Yeun, Hee Sub Ahn, Jong Woong Choi, Young Geun Kim, M.R.P. Perret, K. Bousoltane
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Breaking and Switching Performance with Fluoronitile (C4F7N) Mixtures on 170kV 50kA 60Hz GIS
The most of switching and breaking performances with fluoronitrile mixtures have been successfully conducted according to IEC standards. New development of 170kV 50kA 60Hz GIS with SF6-free solution is introduced in this paper. Instead of SF6, special mixtures which is composed of fluoro-nitrile (C4F7N), carbon dioxide (CO2) and oxygen (O2), is filling in GIS as dielectric, switching and breaking material. This fluoronitrile mixtures as SF6-free solution is able to reduce over than 98% of global warming potential comparing to SF6.