Ron,
I found a more up to date URL for what's happening to the LVD which seems to
be open to all (it didn't ask me for a password). It can be found by
following:
http://europa.eu.int/comm/enterprise/electr_equipment/lv/direct/review.htm
By looking at LVD.3 you will be able to see that not only
My response to Mr. Horvat's message was indeed blunt, but
_was_not_ personal. If my response lacked the decorum some
delicate souls crave, then certainly those self-same
creatures can take me to task off the list (some already
have), rather than making personal comments on the list.
I have
Hello all,
The following document may be dated, but it provides incite into the
applicability of the LVD:
http://www.wbc-europe.com/prodserv/market_segment/low_voltaged73_23.pdf
Best regards,
Ron Wellman
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc
I read in !emc-pstc that Rich Nute ri...@sdd.hp.com wrote (in
200306271743.kaa29...@epgc264.sdd.hp.com) about 'The transformer
screen/shield conundrum' on Fri, 27 Jun 2003:
The screen/shield must be capable of carrying
the full fault current and is often tested
using the 25-amp test.
C.2 of
I read in !emc-pstc that Rich Nute ri...@sdd.hp.com wrote (in
200306271956.maa00...@epgc264.sdd.hp.com) about 'The transformer
screen/shield conundrum' on Fri, 27 Jun 2003:
I would agree that this current, at a very small
contact area, is the driver for the hole in the
screen/shield.
OK, the
I read in !emc-pstc that drcuthb...@micron.com wrote (in E6F64B42266D6
54b80a0f7f4b98212a50ec...@ntxboimbx03.micron.com) about 'CE without
LVD?' on Fri, 27 Jun 2003:
Yes I once had a device that was SELV and this caused some confusion. We
designed it to meet EN61010 as it was a piece of lab
I read in !emc-pstc that brent.dew...@us.datex-ohmeda.com wrote (in
OF8C92B488.05E195FF-ON87256D52.006A403E-87256D52.006AC7C7@us.datex-
ohmeda.com) about 'Czech medical grounding?' on Fri, 27 Jun 2003:
I got some weird feedback from one of our sales people in the Czech
republic. One of the
Hi all,
To develop a Pre-compliance lab at our facillities, I need to prepare a
document in order to convice the manadgement staff to buy some equipments
(basically to perform radiated and conducted emission test to start...)
I would like to find some documents (PDF, links...) talking about all
Nick,
Agreed it is not yet a done deal and the UK does have one or two other
Member States on its side. However, unless significantly more Member States
(and certain parts of industry I may add) come over to the UK way of looking
at things, then it seems highly likely that the output document
Hi Richard:
You mention a few times the 25 Amp test. The designs I have seen that try
and use this approach (and I don't ever recall seeing a design I was happy
with) were all switch mode power supplies where there was an input fuse of
about 2A, meaning that the test would be
I got some weird feedback from one of our sales people in the Czech
republic. One of the local folks said they were concerned that a metal
cased piece of medical electrical equipment didn't have a separate ground
for when it was used on internal batteries. I'm an EMC guy so I was
wondering if
Rich,
Thanks for the Email in which you mention many of the points already
discussed in IEC TC74. So what are we going to do with the new hazard based
standard? Are we going to permit constructions that have been in IEC 60065
and IEC 60950 for years or are we going to introduce a test that is
The removal of the lower voltage limits from the definition of the
LVD scope is not yet a 'done deal'. In particular, the official UK
position is that the costs to industry which would result from this
change would outweigh the benefits and so our current position (as of
30 May 2003) is that
Hi David:
In regards to your suggestions below, would it not be wise to take into
consideration the future plans of the LVD?
The original question was specific to the LVD.
My response was specific to the LVD.
You raise a new question with regard to a future
EU directive, the
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Ben Ko (Technical
Hi John and Richard:
The transformer screen/shield between primary
and secondary windings is intended to carry
the fault current in the event of a failure
of basic insulation between the primary and
the screen/shield.
The screen/shield must be capable of carrying
the full fault current and
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