CPC H01B 3/02 (2013.01) [B64D 27/24 (2013.01)] | 9 Claims |
1. A high voltage electrical system suitable for an aircraft comprising:
an enclosure containing an electrically insulating gas composition comprising:
C3F7CN, in an amount between 22% and 70% by volume;
one or more inert gas selected from the list consisting of nitrogen, carbon dioxide (CO2), air and argon;
an electrical device insulated by the electrically insulating gas composition; and
a pressurisation system configured to maintain the electrically insulating gas composition in the enclosure at an absolute pressure of between 50 kPa and 200 kPa.
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