Fully agree with Jim!
John Allen
London, UK
On 27 January 2012 15:39, Jim Hulbert wrote:
> It's probably common knowledge on THIS forum that 120-240V indicates an
> autoranging power supply and 120/240V indicates there is a switch setting
> for one or the other. I'll bet the average consumer h
Chris
I would be inclined to look at the General Product Safety Directive
http://europa.eu.int/eur-lex/en/lif/dat/1992/en_392L0059.html and the
Product Liability Directive
http://europa.eu.int/eur-lex/en/lif/dat/1999/en_399L0034.html
You would probably also have to look at "case law" which resu
Hi Folks
In repect of John Mowbray's message, please note the URL also contains an
updated list of R&TTE Directive standards.
John Allen.
-Original Message-
From: Mowbray, John H [mailto:jm134...@exchange.canada.ncr.com]
Sent: 11 March 2002 13:10
To: 'emc-p...@ieee.org'
Subject: Listing
Hi Folks
Slight error in my previous message:
In the Treaty of Rome, the possibility of exemptions for military equipment
is now covered in Article 296 - not 226 as previously mentioned.
Sorry for any confusion caused.
John Allen
---
This message is fr
Rich
Possibly worth taking another look at my previous messages as attached.
Regards
John Allen
Thales
Bracknell
-Original Message-
From: richwo...@tycoint.com [mailto:richwo...@tycoint.com]
Sent: 04 March 2002 16:01
To: emc-p...@majordomo.ieee.org
Subject: RTTE
Have any European s
Alexandru & Friends
Been there, done that (many times!):
LVD:
- No exemptions in Directive, or none found in any national legislation.
EMC Directive:
- No Exemption in Directive, but most EU countries (Not Holland and a couple
of others) have implemented exemptions in national legislation und
Hi Folks
A few years ago I worked for BSI "Technical Help to Exporters" and helped to
update their publication "World Wide Plugs and Sockets Survey" - which I
assume is still available from BSI (see www.bsi-global.com)
I remember looking at the Korean standards for plugs and sockets:- Yes -
they
Hi Folks
A few further points that I thought of after sending the first message:
g) Hipotting a piece of repaired equipment does not automatically prove that
it is safe (in fact it can be internally awful but still pass the hipot
test!).
h) It should also involve a comprehensive earth continui
Hi Folks
The concept of hipotting equipment in the field after repairs may
theoretically be a good one - but is fraught with both practical and safety
problems.
For example:
a) Some equipment needs special hipot equipment or equipment settings, e.g.
if it has large filter capacitors on the AC/D
The R&TTE Directive, Article 1 "Scope and aim", Clause 5 states:
"5. This Directive shall not apply to apparatus exclusively used for
activities concerning public security, defence, State security (including
the economic well-being of the State in the case of activities pertaining to
State securit
Hi Folks
Bear in mind that there are some import and certification formalities to be
observed.
See the atached two emails from a few months ago:
John Allen
Thales
Bracknell, UK
-Original Message-
From: WELLMAN,RON (A-PaloAlto,ex1) [mailto:ron_well...@agilent.com]
Sent: 31 January 2002 1
Hi Folks
FYI for those who have'nt come across this site yet - very much regulations
and standards oriented, but may well not tell many of you any more than you
already know!!
Regards
John Allen
Thales
Bracknell, UK
-Original Message-
From: EOTC News [mailto:n...@eotc.be]
Sent: 31 J
Hi Folks
To answer Jim's point:
LVD Annex IV "Internal Production Control" states:
1) Internal production control is the procedure whereby the manufacturer or
his authorized representative established within the Community, who carries
out the obligations laid down in point 2, ensures and decla
Hi Folks
Could this ON Semiconductors problem be something to do with:
a) The fact that the neutral is generally not at ground potential, but has
floated up due the current flowing in it?
or
b) The actual PSU has a filtering arrangement that is non-symmetrical wrt
true ground?
(Ofte
Gary
That sounds like a certification mark for Hazardous/Flammable atmospherem
equipment - now covered by the ATEX Directive in Europe and similar
legislation and standards elsewhere (e.g in the US NEC).
It is always qualified by additional characters denoting the type of
protection incorporated
Hi Folks
(and I have read some of the subsequent posts on this subject)
Surely, notification in the OJ is rather irrelevant to a CB certificate -
which is a cert to the basic IEC, not the EN, and is for worldwide use!
Therefore if the IEC CB has already adopted that underlying latest IEC
61010-1
Peter
I remember this too - I think it was an Austrian/German company (possibly
Feller).
However, be warned, that I also seem to remember that the cordage was dual
certified only as part of extension cordsets with male and female IEC60320
couplers on the ends (e.g. as used with many PC's) - not
Enci
The need to pay for standards is not confined to the UK. Virtually all
countries and organisations do the same - from ANSI and UL in the USA to SA
in Australia. In some countries I understand you even have to pay to be
represented on the committees that prepare standards!!
This money goes t
Hi Folks
I came across the following "
Commission Document 501PC0142
"Amended proposal for a Regulation of the European Parliament and of the
Council on a Community Energy Efficiency Labelling Programme For Office and
Communication Technology Equipment" =
http://europa.eu.int/eur-lex/en/com/dat/
John & Friends
For the draft directives, see
http://europa.eu.int/eur-lex/en/com/dat/2000/en_500PC0347_01.html
Can't help with the date.
Regards
John Allen
-Original Message-
From: John Juhasz [mailto:jjuh...@fiberoptions.com]
Sent: 06 December 2001 21:39
To: 'emc-p...@ieee.org'
Sub
Hi Folks
I agree with Ron, but you should note that the two standards mentioned are
standards for cordsets - not for the appliances with which they are used.
John Allen
-Original Message-
From: WELLMAN,RON (A-PaloAlto,ex1) [mailto:ron_well...@agilent.com]
Sent: 06 December 2001 13:5
Amund
Do you mean just the CE Mark, or the CE Mark accompanied by the appropriate
DoC?
Here is a an example of what can happen if you accept the Mark on its own,
A few years ago, in a well-publised legal case in the UK, a PC reseller had
his own badge placed on the equipment. However, when te
Donald
At the risk of pre-empting others with more time to give a comprehensive
answer, within Europe this type of product would fall under the General
Product Safety Directive 92/59/EEC
http://europa.eu.int/eur-lex/en/lif/dat/1992/en_392L0059.html
Currently this is rather vague on applicable st
Hi Folks
I agree with John W - and a single fire can (and does!) kill and injure FAR
more people than a single electric shock.
Additionally, a large number of products are SELV and/or battery operated
where there is no shock hazard but is often a fire hazard - think of the
power available from m
Andrew
Don't try to explain that double insulation and earthing are both acceptable
alternatives - only 1 persion in 10 will understand and the public won't
care!
Option 1
- I think knowledgeable technical people in most countries would actually
prefer this for the reasons you mention in your
Hi Folks
Having just logged on this morning, I am somewhat surprised at some of the
comments against the concept of "standard definitions" for "safety
critical", "compliance critical", etc. The very fact that this thread was
started in one country and has spread across national boundaries with a
Hi Folks
We have now had this discussion and it brought out a number of useful and
enlightening points, and Lauren's and Rich's summaries of the various inputs
are both interesting and thought-provoking.
However, I now come back to a point that I made in one of my earlier
messages: Where do we
George & friends
As I actually said in one of my earlier messages, the metal
enclosure/housing CAN be a "safety critical part" AND can also be a
"compliance critical part", so I think it SHOULD show up on the "critical
parts list".
John Allen
-Original Message-
From: geor...@lexmark.com
Hi Folks
I agree strongly with Oscar's comments and previous approach - "Compliance
critical" is a far better term. It also means that you can have "EN60950
compliance critical", " EMC compliance critical" etc, as you like without
confusion.
However the widespread existing use of "safety critica
Hi Folks
This is sent separately to my reply regarding IEC 61508 etc., as it
addresses an entirely different issue.
The decision as to what should be classified as a safety critical component
("SCC") in the context of 60950 (etc.) should take into account the overall
construction and use of the
Hi Folks
A few words of warning on the context of the above
Most of the definitions or descriptions for "safety critical component"
given so far are reasonably accurate and straightforward in the context of
strict compliance with IEC/EN/UL EQUIPMENT safety standards such as 60335,
60950 61010
Hi Enci & Other Folks
Comments:
1) The actual value of the capacitor may not the most significant factor -
it is the actual voltage effect on the "user" that is most important, and
that can be significant even if the filter meets the 0.1uF limit
requirements. Even if the capacitor is smaller tha
The normal answer is to fit filters with bleeder resistors across the
Line-to-Neutral capacitor, which is the main culprit for shocks.
In fact, I would ALWAYS advocate these - having known of several cases where
people have picked up unplugged equipment, and then dropped it due to the
reaction sh
Hi Folks
Due to possible redundancy (or enforced relocation to another part of the UK
from the London and Thames Valley area) I may be available in 2-3 months,
and am looking for a new and interesting position.Full CV/Resume available
on request, but here is a summary:
I am an experienced and ve
HI Folks
Over the last few years I have had very little difficulty in buying
rewireable mains plugs in high-street shops in Greece, Crete, Turkey and
France - and, of course, the UK!!
John Allen
-Original Message-
From: Rich Nute [mailto:ri...@sdd.hp.com]
Sent: 07 October 2001 22:44
To
Joe
See IEC/EN60073 for the major colour assignments - and any sector-specific
standards (e.g. for medical see IEC/EN60601, or for industrial equipment see
EN60204 - but no special requirements for IEC/EN60950).
60073 requirements are very similar to what you quote for the Telecordia
spec.
Rega
Hi Folks
I have just come across a very useful page on the NEMKO UK Ltd site, at:
http://www.nemko.ltd.uk/cert/direct.htm
The site is essentially advertising for NEMKO services but has tables which
give thumbnail sketches of the requirements for electrical and electronic
equipment approvals (in
Hi folks
There appear to be a number of documents published this year on related
subjects
Try this Search Engine URL
http://www3.europarl.eu.int/omk/omnsapir.so/pv2?PRG=TITRE&APP=PV2&LANGUE=EN&;
TYPEF=TITRE&YEAR=01&Find=restrictions&FILE=BIBLIO&PLAGE=1
The key word "restrictions" in the arguem
Hi Folks
Here are the URL's for the EC Commission Enterprise Websites for the lists
of national implementations of the directives listed below:
General site URL:
European Commission Enterprise Site
http://europa.eu.int/comm/enterprise/site-map.htm
This leads you on the following URL's which li
Hi Folks
We have been into this subject in some detail as we supply a lot of
equipment into this market.
The situation varies enormously between Directives - there is certainly not
a common approach in the New Approach Directives.
Our current reading of the situation is
LVD
- No exemptions in
Hi Folks
This topic has rather "drifted" and I cannot remember what the original
point was.
But, as a reminder, the following document on the UK Department of Trade and
Industry might be of some use:
http://www.dti.gov.uk/strd/emcps00.pdf
This is the DTI guidance note on compliance with the E
Hi Folks
Kyle make a very valid and serious point in his last paragraph =>
re-engineering of vendors' products.
"CE Marking" of a vendor's product is a "minimum requirement" - suitability
for the intended application in YOUR system is at least as important. This
means preparing an adquate pur
Hi Folks
The proposed new EU Directive is
"500PC0347(02)
Proposal for a Directive of the European Parliament and of the Council on
the restriction of the use of certain hazardous substances in electrical and
electronic equipment"
http://europa.eu.int/eur-lex/en/com/dat/2000/en_500PC0347_02.html
Hi Folks
WRT the IEC standard(s), as I understand it, IEC documents are - and always
have been - "advisory documents" which only have "legal force" when they
have been officially adopted in a particular country or region (e.g. the EU)
by the relevant regulatory or standards body(ies) [ or adopted
Chris & Friends
See 85/374/EEC, as amended by 1999/34/EC,
The General Product Liability Directive
http://europa.eu.int/eur-lex/en/lif/dat/1999/en_399L0034.html
Regards
John Allen
Thales Defence
Bracknell
-Original Message-
From: Chris Maxwell [mailto:chris.maxw...@nettest.co
Hi Folks
Many thanks to all who responded publically and privately to my enquiry.
Quite a number of comparison documents appear to exist in both the public
and private domains.
I will try to put together for the forum a brief summary of the various
sources of information sometime in the near fu
Hi Folks
The requirements of the various clauses have been re-arranged between these
two editions, so does anyone know of any guides or cross-references as to
how the requirements have actually moved around?
Thanks in advance.
John Allen
Thales Defence Communications Division
Bracknell
UK
---
Folks
Unless someone can tell me where I have gone wrong, the first of Ed's URL's
(liun.hektik) seems to be a dead-end as all I get are lost links.
John Allen.
-Original Message-
From: Price, Ed [mailto:ed.pr...@cubic.com]
Sent: 29 May 2001 16:23
To: 'Hjálmar Árnason'; emc-p...@majordom
Hi Folks
>From my days (about 10 years ago) of dealing with UL on this issue, I seem
to remember that pluggable Listed products had to a power cord and that
power cord had to have a fitted plug that was suitable and legal for the
country in which the product was to be used - and that certainly in
Martin
Having read several other contributors comments on your question, I have to
say that I totally agree with them (test with the switch in both positions)
for one very practical reason.
I know of several occasions where personnel have lifted disconnected
equipment by wrapping their arms aro
Hi Folks
Hate to be a doom-bringer on this one and introduce another issue, but - to
bring a note of sanity - I think the General Product Safety Directive
(92/59/EEC) might actually apply to this type of kit! It applies to
virtually anything where there is no sector-specific directive.
However,
Hi Folks
Another possibility: try to find fully-insulated quick-release terminals
which have a manually-operated lock and don't require a tool.
(We had to do this recently when we had a similar problem with batteries n
confined spaces in vehicles)
John Allen
Thales Defence Ltd
Bracknell, UK
-
Mike
I believe that you will find the international markings in one of the parts
of IEC60127 (was IEC127).
Although I have'nt got the standards to hand, and if I remember correctly,
typically these markings are:
"FF"= Very Fast
"F" = Fast/Normal
"T" = Slow/Time D
Hi folks
I (and I believe, a number of other people) disagree with the last sentence
of David's message - in so far as it is NOT merely a question of having a
longer grounding pin.
IEC and EN60950 - and I think also the common UL/CSA standard (but not
having seen the latest edition) - allow high
Hi folks
Not an EN60320 device - I think this is the 16A European 2-pin plug with
dual (French pin in socket + German spring-loaded side) earthing contacts to
Standard Sheet VII of the old CEE 7 standard.
This plug is designed to fit almost all Continental European 2-pin sockets,
and provides ea
Hi Folks
I completely agree with CC.
In order to avoid rating plate non-compliance with the marking requirements
of safety standards, and to allow for unit variations and product upgrades
everyone (well - almost everyone!) allows a good margin for error on the
rated current/watts/VA markings.
Hi Courtland
Should the external cert be enough? I think not.
The LVD and EMC Directives (etc) also require you to ensure that your design
and production documentation and processes are adequate. A simple external
test certificate on the testing of a single unit does not ensure this.
Maybe, how
Hi folks
IEC/EN60950: 2000 Clause 5.2.2 Note 1 refers to routine electric strength
tests of 1 second duration being permissable.
There is also the following ECMA std which says pretty much as EN50116:
ECMA-166 Information Technology Equipment - Routine Electrical Safety
Testing in Production
Kurt & friends
The rationale for using a 13A fuse in cords with lower amperage ratings is
simple: The fuse in the UK plug is essentially in place to take account of
the use of the UK 30A/32A ring main distribution system which is uses 2.5 sq
mm (or larger) conductors in the building wiring system
Ned
For more information see the Year 2000 Compliance Engineering Reference
Guide - in the European edition (at least) there is a quite good and long
article on this Directive.
http://europa.eu.int/geninfo/query_en.htm
will take you to the EU Commission Search Engine
Enter 95/54/EC as the searc
Jim
In the UK there are - as far as I know - no specified regulatory limits but
there are guidelines issued by the Health & Safety Executive - see
http://www.open.gov.uk/hse/hsehome.htm
Additionally, very similar recommendations are given in the UK Ministry of
Defence standard DEF 00-25 Part 3 -
Hi folks
A comment - I would urge a little caution if IT products are being used in
the industrial or medical environments since it is these where the "traffic
light" approach is mandated in the appropriate sector standards (e.g.
EN60204 & EN/IEC 601 respectively).
Also, "correctly" coloured LE
Hi Folks
BSI moved from the address with the 0908 phone number quite a few years ago!
The current phone number is +44-20-8996-9001, or try the website on
www.bsi.org.uk
Otherwise, as Lou says.
John Allen
Thomson Racal Defence Electronics Ltd
Bracknell
UK
-Original Message-
From: Lou
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