We have a product which uses conductive paint inside of the enclosure. From
a performance standpoint, it works quite well. The major problem being that
you need metal to metal (paint to paint) contact. We found that the abrasive
quality was pretty poor and as such we had to add material (conductive tape)
to improve the wear characteristic. Additionally, you have to remember to
"hold back" or "mask" the material to eliminate touching the surface.
Because it is paint (or plating) it cannot pass the ground test and as such,
cannot be defined as protective earth.

Rick Busche
Evans & Sutherland
[email protected]

                -----Original Message-----
                From:   JENKINS, JEFF [mailto:[email protected]]
                Sent:   Tuesday, April 13, 1999 10:07 AM
                To:     'emc-pstc'
                Subject:        Conductive Paint

                Hello Group,

                My company is proposing to use conductive paint on our
enclosures, and I
                would like your input as to the acceptability of this
vis-a-vis protective
                earth bonding of enclosure panels.  I am interested in the
perspective of
                both European and North American requirements.

                This should be a generic question, but if it helps, here are
the standards
                we use:

                EN 60950 / IEC 950 / UL 1950 / CSA 950
                EN 50178
                UL 1012
                CSA C22.2 No. 107.1

                Regards,

                Jeff Jenkins
                Senior Regulatory Compliance Engineer
                Advanced Energy Industries, Inc.
                Fort Collins, CO USA 80525

                Opinions are my own and not necessarily shared by Advanced
Energy
                Industries, Inc. or its affiliates. 

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