Can anyone help resolve my confusion over the issue of equipment insulation
testing and the constraints on such testing associated with components that
might get damaged by such tests.
More specifically, there are various safety standards that require (say) a
high voltage test of (say) 1000v rms between hazardous equipment inputs and
eathed equipment cases (basic insulation). In some instances they may say
that testing is not mandatory if connected components might get damaged by
such a test.
This seems odd to me unless the damage talked about is to cause "safety
critical" components to fail safe - otherwise, by definition, such
components must prejudice the safety of the equipment.
I am coming at this from the point of view of military and civil aircraft
equipments, and their connections to (often) 115v rms line to neutral)
aircraft power systems. BS 3G 100, for instance makes statements about "no
test if damage may occur". This is an old standard. However, commercial
ground based equipment standards often lead the way in safety and offer
much useful information that can be interpreted in the context of military
avionics. They don't seem awfully clear either.
Can anyone offer any useful information?
Are there safety specific groups out there?
Dave Palmer
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