Stuart,
I think that not only has our EMC discussions not fully answered your
original question, what specific tests, but the discussions have completely
left product safety requirements to the wind.
Our company (a commercial test lab) tests many products of this sort for
compliance to EU
Don,
I do not believe that circuit-to-circuit testing is required between
low-voltage circuits. The test is intended to prevent shock hazards caused
by insulation leakage between high-voltage circuits and low-voltage
circuits. I would group the circuits for production testing and only test
them
Hello Group,
This is a little off topic but possibly of interest. I just received an
email from a location in Mexico, from someone I don't know at some college,
that contained the virus 'sircam.' I thought it might be of interest
because EMCPSTC is the only forum I'm monitoring and responding
Richard,
The larger single wire, with appropriate ring lug, is actually the preferred
construction. The two wire method is used in cases where something else in
the system, such as a multi-wire connector, will only accept the smaller
gauge wire. In that case each ring lug MUST be secured with
I read in !emc-pstc that don_macart...@selinc.com wrote (in 88256AAB.00
640e1a...@edison.selinc.com) about 'Manufacturing Hipot Testing', on
Fri, 17 Aug 2001:
A Hipot standard which we must run for CE compliance requires that
circuit-to-circuit and circuit-to-ground testing be performed on a
I read in !emc-pstc that Frazee, Douglas (Douglas) dfra...@lucent.com
wrote (in E5AD48E09D48D511AFB800805F6FE96611BB2F@NJ7460EXCH006U) about
'EMC and power supply', on Fri, 17 Aug 2001:
If the product in question is a PC, this is not
the case. Both the FCC and EU allow PC's to be assembled from
I read in !emc-pstc that Rich Nute ri...@sdd.hp.com wrote (in
200108171905.maa00...@epgc196.sdd.hp.com) about 'CE test suite for
computers', on Fri, 17 Aug 2001:
Agreed!
Well, see my direct response to G. P.
EN 61000-3-2 is driven by Euro power distributors
who don't want to correct for
I read in !emc-pstc that Pettit, Ghery ghery.pet...@intel.com wrote
(in d5e932f578ebd111ac3f00a0c96b1e6f09506...@orsmsx31.jf.intel.com)
about 'CE test suite for computers', on Fri, 17 Aug 2001:
Also EN 61000-3-3 needs to be considered. Useless standards, if you ask
me.
That's
Hi Ghery:
Also EN 61000-3-3 needs to be considered. Useless standards, if you ask me.
Agreed!
EN 61000-3-2 is driven by Euro power distributors
who don't want to correct for non-linear loads.
(But who have no quarrel with correcting for
phase angle.)
I don't understand the drive for
Also EN 61000-3-3 needs to be considered. Useless standards, if you ask me.
Ghery
-Original Message-
From: Frazee, Douglas (Douglas) [mailto:dfra...@lucent.com]
Sent: Friday, August 17, 2001 9:19 AM
To: 'Pettit, Ghery'; 'Stuart Lopata'; emc
Subject: RE: CE test suite for computers
Ghery, I believe 61000-3-2, Class D is also required.
Doug Frazee
Regulatory Compliance Manager
Lucent Technologies, Broadband Carrier Networks
Access Technology Division
InterNetworking Systems
(301) 809-4415
(301) 352-4730 FAX
dfra...@lucent.com
-Original Message-
From: Pettit,
I've read several responses that all indicate that the modified ITE MUST be
retested for CE-compliance. If the product in question is a PC, this is not
the case. Both the FCC and EU allow PC's to be assembled from CE-marked
components without additional testing. See FCC rules and EMC Directive
Yes.
Regards,
Peter L. Tarver, PE
Product Safety Manager
Sanmina Homologation Services
peter.tar...@sanmina.com
-Original Message-
From: owner-emc-p...@majordomo.ieee.org
[mailto:owner-emc-p...@majordomo.ieee.org]On
Behalf Of Stone, Richard A
(Richard)
Group,
can you
As a quick and simple answer, No. In a single fault condition, one cable
becomes lose / detached. The reaming 32 amp capable see the full 63 amps. The
result smoke, flame, etc.
Expressly forbidden in some standards and knocked out by others under the
single fault conditions.
Only way to do this
What happen, if one of these wire looses?
Sérgio Rocha Loures
Siemens Ltda. - Brazil
Supply Chain - Quality and Engineering
IC SC QE L
Tel: +55 41 341-5755
Fax: +55 41 341-5058
E-mail: sergioro...@siemens.com.br
Stone, Richard A (Richard) rsto...@lucent.com 17/08/01 10:01
Group,
can you
When I managed both EMC and power supply design groups in the '80's,
I found the many tech magazine ads for open frame power supplies quite
amusing. These always stated that the power supplies met FCC and other
EMI requirements. How were these tested? A dummy d.c. load does NOT
impose a
John, thanks for that update. Now I have to wonder if I am testing our ITE
correctly. We have an ITE that has a thermostat and heater for outdoor use.
We have been testing the heating circuit to the click requirements of EN
55014-1. However, it would appear that one could reverse the CENELEC
You can order the standard at the ATT web site listed under Technical
Reference 54014.
http://www.att.com/cpetesting/54014.html
Ted Eckert
Regulatory Compliance Engineer
American Power Conversion Corporation
ted.eck...@apcc.com
The items contained in this e-mail reflect the personal opinions
Group,
can you substitute one large wire 6 awg. ( handlles 63 amps. max )
for two smaller wires ( 10 awg. carries 32 amps. max. ) in Parallel.
They would 1/2 the current and disperse heat better.
The accepting screw terminal would allow for proper threading and tightness
of connection.
since
Dear Members,
For a removable lithium battery used with a device (such as a celullar
telephone) what are the applicable requirements for Europe and North
America?
PETER S. MERGUERIAN
Technical Director
I.T.L. (Product Testing) Ltd.
26 Hacharoshet St., POB 211
Or Yehuda 60251, Israel
Tel: +
Hi Amund,
I have experienced a CE Marked power supply, which was used to replace an
existing one failing EMC EN55022 as part of the system i.e. Product + Power
Supply. This was purchased to the same specification but from a different
manufacturer. It seems that power supply manufacturers tend to
I read in !emc-pstc that Ken Javor ken.ja...@emccompliance.com wrote
(in 20010816231829.IKX2732.femail28.sdc1.sfba.home.com@[65.11.150.27])
about 'EMC and power supply', on Thu, 16 Aug 2001:
So one question is how much do you load the power
supply when you test it - you may want to load it just
I read in !emc-pstc that am...@westin.org wrote (in 20010816213234.4109
..qm...@www1.nameplanet.com) about 'EMC and power supply', on Thu, 16
Aug 2001:
1. We plan to EMC test a stand alone power supply (PS1)
2. We have an IT product which has passed the EMC test.
3. We want to remove the current
I read in !emc-pstc that Hare, Paul ph...@pirus.com wrote (in
200108162322.f7gnm8304...@gemini2.ieee.org) about 'FCC rule
interpretation (add'l info)', on Thu, 16 Aug 2001:
As a side note, I've seen an FCC application where the second harmonic of
the device was measured and reported to
It's available in paper format for a nominal purchase fee. See URL:
http://www.att.com/cpetesting/trs.html
At 01:21 PM 8/16/2001 -0700, Dwight Hunnicutt wrote:
Anyone know if ATT's website has ATT 54014 (ACCUNET T45) available?
Global doesn't seem to have it. thanks
Dwight
This is interesting to me. I have tested many CE marked computer power
supplies and they all met CE requirements at light loads up to about 50%
loading, but somewhere over 50% loading the differential mode (dm) CE would
go out of spec. This is ok if the typical power supply is derated 50% when
Stuart,
As a side note, I've seen an FCC application where the second harmonic of
the device was measured and reported to be at the limit (i.e. 54 dBuV/m).
Since the second harmonic was the closest to the limit, the transmitter's
power had been increased to a point at which there was zero
Brian,
As of August 1, 2001, EN 60742:1995 should not be used for presumption of
conformity to the LVD. EN61558-2-6:1997 supercedes it.
The last date of mfr is unimportant. The date which the xfrmrs are placed
on the market determines which standards to use in order to demonstrate
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