Interesting points. This provoked me to look again into a standard that
I've examined but never used, BS EN 50178:1998, Electronic equipment for
use in power installations. It covers safety, EMC, and environmental
conditions. It is 99 pages long, it's informative Annex A starts on page
72, so
Hi John,
In a past life, I had to deal with conductive coatings. In addition to the
parameters you listed,
uniformity, integrity and durability of the coating were important. Uniformity
was important because
the inside surface of the enclosure pieces were complicated (coating voids
behind
Joe,
Having had much difficulty meeting these limits, could you briefly summarize
the changes in Am1? Do they apply also to PSTN lines also?
Thanks,
David.
David Gelfand
Regulatory Approvals
Kontron Communications Inc.
I downloaded the amendment and was pleased to
see that it mostly
For Hi-pot, see CAN/CSA C22.2 No 60950-00 * UL 60950, ed. 3, Dec. 1, 2000,
cl. 5.2.2 Note 1 and the invoked definition (by NOTE 1) for ROUTINE TEST per
cl. 1.2.13.3.
My opinion and not that of my employer.
Regards,
Kaz Gawrzyjal
Dell Computer Corp.
-Original Message-
From: John
Other issues include recycling of materials per the proposed EU directive.
See http://europa.eu.int/comm/enterprise/electr_equipment/eee/index.htm
http://europa.eu.int/comm/enterprise/electr_equipment/eee/index.htm
Richard Woods
--
From: John Juhasz
Greetings . . .
Beginning to consider conductive coatings for EMC shielding.
To be used inside a plastic cover (material as yet unknown) in
a low power/voltage (SELV) application.
This is unfamiliar territory.
I'm sure someone on this listserv has experience with these.
I know to at least
I read in !emc-pstc that Peter Merguerian pmerguer...@itl.co.il wrote
(in 2D1037012914D4118DB8204C4F4F50202D5CD4@ITLLTD01) about
'Manufacturing Hipot Testing', on Mon, 20 Aug 2001:
Production - Line Tests (usually Dilectric Strength and Earth Continuity and
in some cases like medical equipment,
Chris,
Production - Line Tests (usually Dilectric Strength and Earth Continuity and
in some cases like medical equipment, Leakage ) are not required by the
standards but by the third party certification agencies. This is to ensure
that the unit meets protection against shock even after a
Is anyone aware of any generic, family or product standard that requires ESD
test level 4 as specified in IEC 61000-4-2? What is the standard number?
Level 4 is 8 kV contact discharge and 15 kV air discharge.
I am aware of the following standards:
o IEC60601-2-24 (safety EMC for medical
Does anyone happen to know if child safety warning labels/markings
for plastic bags used as packaging are mandatory anywhere?
Such markings are not legally mandatory in the UK, although many
major retailers demand them. I guess the same is true in most other
markets, but I particularly want
Chris, Don,
Testing to standards is usually termed Type Testing, which is testing for
design faults. The purpose of production testing is to identify production
faults, (e.g. incorrect or bad connections, faulty components, etc., etc.)
and this must be taken into account when deciding which
Don,
IEC 60950, section 5.3, is specific regarding electric strength
testing. It does not require testing between secondary circuits,
as it is the primary to secondary, and primary to ground insulation
that provides protection against electric shock. Type testing is
performed for 1 minute,
Dave Heald Wrote:
Regardless, every piece of CO equipment (at least owned by the RBOC)
should be immune to 9.8 or so V/m signals and any exceptions should be
known by the CO administrators as such information is included in a NEBS
report (Immunity to 10V/m is a conditional requirement only - I
Don't forget Telco Conducted Emissions is NOT required until
at least 2003'
Richard,
-Original Message-
From: Frazee, Douglas (Douglas) [mailto:dfra...@lucent.com]
Sent: Friday, August 17, 2001 12:19 PM
To: 'Pettit, Ghery'; 'Stuart Lopata'; emc
Subject: RE: CE test suite for computers
I read in !emc-pstc that andrew.p.pr...@baesystems.com wrote (in
cc4b7352cc8fd4118d7700b0d0497235c2e...@basit67307300.basldn.gecm.com)
about 'Repair of Transient Generator', on Mon, 20 Aug 2001:
Is there anyone who can tell me if there is anywhere in the UK that I could
get a Honeywell 4881
Hi all,
Is there anyone who can tell me if there is anywhere in the UK that I could
get a Honeywell 4881 transient generator repaired, I know it is 30+ years
old but as most of you know getting new equipment or replacing old equipment
can be an almost impossible task for an emc lab.
Regards
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