Investigation of SF/sub 6/-N/sub 2/, SF/sub 6/-CO/sub 2/ and SF/sub 6/-air as substitutes for SF/sub 6/ insulation

Y. Qiu; Yuan Feng

doi:10.1109/elinsl.1996.549457

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JOURNAL ARTICLE

Investigation of SF/sub 6/-N/sub 2/, SF/sub 6/-CO/sub 2/ and SF/sub 6/-air as substitutes for SF/sub 6/ insulation

Y. Qiu Yuan Feng

Year: 2002 Vol: 2 Pages: 766-769

DOI: 10.1109/elinsl.1996.549457

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Abstract

The dielectric strength of SF/sub 6/-N/sub 2/ is slightly higher than that of SF/sub 6/-CO/sub 2/ in slightly nonuniform fields encountered in gas-insulated switchgear (GIS) and gas-insulated cables, but the opposite is true in the cases of highly nonuniform fields and gas/film insulation existing in gas-insulated transformers. Experiments also show that the SF/sub 6/-air mixture with the SF/sub 6/ concentration being 0.8 can be used in cubicle type GIS, where the impulse dielectric strength of the gas mixture is apparently higher than that of SF/sub 6/ gas.

Keywords:

Switchgear Sulfur hexafluoride Dielectric Dielectric gas Analytical Chemistry (journal) Materials science Impulse (physics) Gas analysis Electrical engineering Composite material Chemistry Physics Optoelectronics Engineering Environmental chemistry

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Physical Sciences → Materials Science → Materials Chemistry

Power Transformer Diagnostics and Insulation

Physical Sciences → Engineering → Electrical and Electronic Engineering

Plasma Diagnostics and Applications

Physical Sciences → Engineering → Electrical and Electronic Engineering

Investigation of SF/sub 6/-N/sub 2/, SF/sub 6/-CO/sub 2/ and SF/sub 6/-air as substitutes for SF/sub 6/ insulation

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