Where could I find requirements for creepage and clearance distances for electronics in a vacuum (1e-5 mbar) environment? The EN-IEC 61010-1 specifies these distances for use in air and also lists derating factors for use at altitudes up to 5000 m (reduced pressure) but vacuum conditions are not mentioned at all.
From experience I can tell that a few kV/mm is easily doable, but I guess that my experience alone is not sufficient for certification :). Can anyone point me to a relevant standard?
Thanks