Concur about below vendors and Ed's comments.
Need to look at the power supply installation instructions and Conditions of
Acceptability. Wrote some install instructions for a model series stating that
output is floated, so grounding of output not recommended unless noise currents
returned to/u
Scott:
I didn’t want to drop names about vendors, but Vicor has been my favorite for
smart power supplies since I crashed into the same problem (on a smart bomb
system around 1990) that you are now seeing. Vicor made commercial and MIL
grade units, and they even offered an auxiliary module (
Hi John,
You could change the design to have Reinforced Insulation between mains and
chassis. That would be the "easiest" solution... for the test lab/agency ;).
Earthed SELV should only require Basic Insulation to mains, as long as the
earth connection can meet the requirements for protective ea
Hello John,
One common interpretation is that you use the test voltage for
double/reinforced insulation when testing between mains and user accessible
circuits even when the user accessible circuits are referenced to an earth
grounded chassis.
Here is the rationale. Any given user accessible c
Are you testing just line/neutral. To ground?
From: Harrington, John
Sent: Thursday, February 25, 2016 10:45 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Reply To: Harrington, John
Subject: [PSES] Insulation testing
Gentlemen,
How do you demonstrate the dielectric strength between mains and user
accessib
Gentlemen,
How do you demonstrate the dielectric strength between mains and user
accessible circuits when the accessible circuits are referenced to chassis?
If you apply the test voltage for reinforced insulation to the mains circuits
and it breaks down to chassis because there is (as required)
Hi Ed,
I believe you hit the nail on the head, figuratively. The problem is the
use of a commercial DC-DC converter that is not meeting the required
specification. The product and components must fit in a tight space, and
spacing is extremely tight, so there is limitations on the external
compon
I’m looking for assistance with field approval for some automated test
equipment destined for a US automotive factory. Please would anyone interested
in working with Conformance on this (or who can recommend someone who may be
interested in working with Conformance) contact me directly.
Thanks
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