Brian,
I appreciate for your purposes the SPC component of
choice is the MOV. Quite right too, if you are considering
cost and device safety standards like UL 1449. SPC
standards, which tend to be for component electrical and
environmental performance, can only overlap the requirements
All,
The
Northeast Product Safety Society invites you to the 17th annual Vendor’s Night
to be held at the Marlborough Holiday Inn next week tomorrow, November 16th
from 5:00 to 9:30 PM. Vendor's Night is
opportunity to get answers to all your product safety/EMC questions in one
evening.
Mick,
Good points, most of which are within the realization of my employer's
designs. For example, for the automotive stuff, we tend to not use MOVs, but
as you suggested, an avalanche diode(where our big concern is not surge, but
ESD). But for component conversion devices, where the rated input
Brian,
I find portions of our discussion has been transcribed
to the entire IEC TC 108 group. Thus I feel I should respond
to your TC 108 comments
A problem NOT ADDRESSED by TC108 is the increased energy AFTER a surge, or
during a SFC, due to the 120% rating requirement. Perhaps this was
Ralph, no real argument to the benefit except especially the safety folks won't
even go into court as an expert witness on your behalf. But the benefit of the
third party is more in how deep they get into your wallet. is the reasonable
manufacturer doctrine in Tort law. It's just what it sounds
From: ralph.mcdiar...@schneider-electric.com
[mailto:ralph.mcdiar...@schneider-electric.com]
Sent: Tuesday, November 15, 2011 08:51
I don't think UL would be sued; the manufacturer is ultimately liable.
The is little or no
benefit of 3rd party certification of a product under Tort law.
The
Yup, it's the theory of deep pockets but there still has to be proximal cost
for them to drag anybody into the fray UL didn't design it, they didn't sell
it, and they didn't tell anybody it was safe - only that it meets the standards
for safety that exist at the time of review. I suppose it was
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