Dear all:
I apologize for my unkind characterization of VDE and UL.
Rich
From: Richard Nute [mailto:ri...@ieee.org]
Sent: Monday, January 02, 2017 10:49 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Questions on GS, VDE and UL Recognized Marks
Hi Vincent:
I’m a cynic regarding certification houses such as VDE and UL. Their primary
motive is income in the name of safety (not necessarily actual safety).
4) Does it mean that components that meet VDE Mark and meet UL Recognized Mark
without much testing to be done?
Example, a Li-ion battery which is IEC / EN 62133:2012 certified with VDE Mark,
does it mean that it can meet UL Recognized Mark requirement with just little
or no extra testing to be done?
With the advent of IECEE, members must recognize competitors’ certifications,
which means little or no income from testing and certification. Members do
their best to find problems with others’ testing so that they can re-do the
testing and derive some income. National deviations from an IEC standard
provide another opportunity to test and derive income (if the original CB
report did not cover the national deviations).
So, the answer is, “it depends.” If there is no CB report, then VDE and UL
testing are independent of each other. If there is a CB report, the other
member will evaluate it and give you its finding whether the CB report meets
the standard’s (their interpretation) requirements (and local, unwritten
requirements of the test house). (Providing a copy of the non-CB test report
will probably make it easier for the other test house to test the unit and more
timely, but probably will not make it less expensive.)
Best wishes for the New Year,
Rich
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