Hello Curt:
IEC 61508 series covers functional safety. This
standard may be of use to you in your research. I've
attached a working draft of IEC TR 61508-0 which
describes the concepts of functional safety.
(Attachments are stripped from the message by the
IEEE listserver, so
Curt,
You might wish to check out Nancy Levison's book, Safeware: System Safety
and Computers
She is one of the primer authorities on software safety in the country, if
not the world.
She addresses the Therac 25 incident in her book, not necessarily from an
ethical point of view but after
Sorry if this has been asked before, but can anyone point me to a comparison
of these two standards, highlighting any significant differences?
Is there any significant reason why compliance with UL60950 cannot be used to
show compliance with the LVD for CE marking?
Any help appreciated,
For the -1, 2nd ed, see
http://www.ul.com/hitech/ite/60950-1_2ndEd_Analysis_Nov14_07.pdf
I might have some comparison documents archived for older editions that I'll
look for on request.
Regards,
Peter L. Tarver, PE
ptar...@ieee.org
CONFIDENTIALITY
This e-mail message and any attachments
David
Unfortunately, I do not know of any comparison. However, the first reason why
you cannot use UL60950 for compliance with the LVD is that it is not an EN
standard, and also incorporates the US National Deviations, so is different in
some areas from the EN version. That said, if you
Doug Powell wrote on 04/22/2008 11:57:13:
I am searching for a resource that details standard utility voltages,
world-wide. I already have Electric
Current Abroad from the ITA. http:/
www.ita.doc.gov/media/Publications/blurbs/current2002blurb.html
Hi Dave,
Technically speaking your subject line should’ve been UL60950-1 vs.
EN60950-1 given your query. Anyway, without going into detail you only have to
look at these standards to see the differences between them and from
IEC60950-1, in particular:
UL60950-1: Preface listing 6 types of
SUBJECT: EN (SPECIFIC )STANDARDS VS THE ~ EQUIVALENT IEC STANDARDS
ALL,
I have need to know if these specific standards below are one to one with
the IEC Standard
My products are primarily CCTV and ITE equipment.
· BS EN 61000-4-2:1995, IEC 61000-4-2:1995 Electromagnetic
Is anyone aware of the vibration standards and/or profiles that the adapter
(AC/DC, AC/AC, wall, tabletop, consumer grade) industry is using. I am trying
to find out if there is any consistency and if manufacturers are even
conducting vibration tests.
Best Regards,
Jody Leber
Program Manager
Just to add some more information, related to standard and medical device
standardization nowadays:
There´s been a concern for some time about software embebbed in medical
devices (and other medical device softwares).
Right now almost every regulatory requirements (which are in general
A good EMC engineer makes it pass without changing anything.
A great EMC engineer makes it pass by deleting a part or two and taking
credit for the cost reduction.
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
Pettit, Ghery
Sent: Friday, May 02, 2008 12:14 PM
To: John
Hi Jody,
I am not aware of any vibration standards for adapters but I would recommend
using the IEC 60068 series standards for Shock and Vibration. My concern would
be more Shock than Vibration. I would assume that most reputable manufactures
conduct tests similar to these. In addition linear
The UL standard will highlight differences from the base (IEC) standard. The
EN standard will also highlight differences from the base (IEC) standard.
Another thing you could do is get the latest CB bulletin for OFF from the
IECEE, which will list published national and group differences. You
I am looking for a comprehensive standard, book, or technical article which
describes designing a transformer to pass the safety requirements (Creepage,
Clearance, Insulation Properties, etc.). Overall product must pass UL 60950.
There seems to be a lot of standards out there to choose from. I
Does any one remember or still use a Kalmus amplifier.
We have one but in a recent move we lost the special GPIB cable for it.
Does any one know what the pin out is for this cable or better still have a
spare one?
Any help would be gratefully appreciated.
Best regards
John Harrington
I am not particularly familiar with those specific standards, but...
a) The national versions (BS EN, DIN EN, IS EN, etc.) editions should have the
same technical content as the EN (not IEC) version, except the language may
vary.
In any case the list of harmonized standards published by the EU
In message
e6be5f33e8ca3c41b33ff7352e28bad8013ca...@mercury.vicon-cctv.com, dated
Thu, 8 May 2008, Reginald Henry rhe...@vicon-cctv.com writes:
I have need to know if these specific standards below are one to one
with the IEC Standard My products are primarily CCTV and ITE equipment.
What
Two other general points, even apart from the deviations made by UL from the
IEC version:
1) For EU, you need to meet the EN edition, which may also vary from the IEC
edition.
2) Unless you specifically asked, the NRTL that evaluated the product to the
UL standard may have only evaluated the
In message ae05e1e63a2f734f8f13a9f794940a05cd6...@aslan.itronix.com,
dated Thu, 8 May 2008, MacArthur, Don don.macart...@gd-itronix.com
writes:
I am looking for a comprehensive standard, book, or technical article
which describes designing a transformer to pass the safety requirements
You wrote,
Primarily I am interested in the ISO/IEC or international safety standards
for software programming of industrial equipment or medical devices.
I'll defer to others (Marcelo...) for the medical standards, but since you
also asked about industrial equipment, consider,
Generic
Remember to keep in mind you may not care what the EN version of the IEC
says as the product family standards for your particular universe may
all reference the IEC versions. If I recall correctly, there are no
more 61000-4 standards listed on the newappraoch.org website as
harmonized. If EN
In message
79b6babf7ce2914591e1c45c7ed086fa01d...@chiefwiggum.nceelabs.org, dated
Thu, 8 May 2008, Doug Kramer dkra...@nceelabs.com writes:
If EN 55024 calls out testing to IEC 61000-4-4, use of EN61000-4-4
(what's the date on that?) would not be the correct approach.
I don't think there is
Bonjour Reginald,
The better place to go to get your answer is on the Cenelec web site on the
publish/in progress page
http://www.cenelec.eu/Cenelec/Code/Frameset.aspx
You then just put the reference on the standard you’re looking for in the
first block and click on run report:
For
In message 00b501c8b132$936f1170$7b97a...@dorvalmatrox.matrox.com,
dated Thu, 8 May 2008, Benoit Nadeau bnad...@matrox.com writes:
If you click on any of them then you get all the details and especially
if this document is a direct copy of IEC or a modified version. In this
particular case
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