Abstract
This paper studies the possibility of applying a gas mixture containing c-C/sub 4/F/sub 8/ in the gas insulation of power equipment. Environmental aspects such as global warming potential, ozone depletion potential, recycling loss and toxicity are discussed. Insulation characteristics of gas mixtures such as c-C/sub 4/F/sub 8//N/sub 2/, c-C/sub 4/F/sub 8//air, and c-C/sub 4/F/sub 8//CO/sub 2/ are examined experimentally under a quasi-homogeneous or an inhomogeneous electric field condition. Most of the characteristics are compared with those of SF/sub 6//N/sub 2/, which is now widely studied as the most plausible alternative to pure SF/sub 6/ for gas insulation. The experimental results, together with the discussion, suggest that gas mixtures containing c-C/sub 4/F/sub 8/ are possible substitutes for SF/sub 6/ and SF/sub 6//N/sub 2/.
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