Actually, discharges involving insulators appear to be polarity
senstive from recently published data. I have confirmed this with lab
measurements. Not sure how this effects safety.
Doug
On Wed, 5 Aug 2015 11:52:06 -0700, Richard Nute wrote:
Hi Charlie:
The standard is incorrect in requiring tests of both polarity d.c.
There is no physical rationale for both polarities.
Go on, I’ll bite J
What’s this requirement doing in the standard then?
Because it appears in IEC 60664-1, sub-clause 6.1.2.2.2.3.
Best regards,
Rich
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