Hi Keith,
Try Mikes Product Service (part of TUV Product Service)
Ohmstrasse 2-4
P.O.Box 28
D-94340 Strasskirchen
Germany
Phone +49 9424 9407 0
Fax +49 9424 9407 60
It's an excellent test house! They do the works within EMC testing.
Best regards
Korn
_
One additional point about the FCC accepting CISPR data. The CISPR 22
measurements should be tested with ANSI 63 test set-ups for the EUT (Equipment
Under Test).
-Original Message-
From: ron_pick...@hypercom.com [SMTP:ron_pick...@hypercom.com]
Sent: Friday, February 20, 1998 2:37
I've run across a similar problem: We provide an H Field monitor made by
Walker Scientific that reads in Gauss and our Japanese rep (Toyo) told
me a couple of weeks ago that he could no longer accept delivery on
meters unless we change the scale to read in Tesla... His argument was a
Japanese
What is the point? - Mel
--
From: CTL[SMTP:c...@prodigy.net]
Sent: Monday, February 23, 1998 12:22 PM
To: emc-p...@ieee.org
Subject:EN50092-1:1997
Doug -
Delta-delta transformers are popular with the utilities for economy's
sake (they are less expensive than WYE transformers) For similar
reasons, some industrial applications distribute and use power within
their plants on delta feeds.
In office environments, however, it's typical to use a
Yes Eric,
I have worked with conductive coatings on plastic with
no problems as long as some things are kept in mind -
There's a whole UL thing to it that I can list
if enough people want me to.
The coatings cannot withstand repeated removal
from the product. The coatings are very
Pryor
This extract from the EMC+LVD Yearbook 98 Standards section, which will be
published early March may help you. More info from web site below
Certification Clauses
The European Commission has declared the certification clauses in ENs to be
illegal. These clauses were used to extend the
I am looking for a testing house to perform surge testing to meet
IEEE Recommended Practice on Surge Voltage in Low Voltage AC Power
Circuits, IEEE C62.41 - 1991 to Category C2
10kV 5kA with an 1.2/50 - 8/20 combination waveform
===
How do you verify that material, component, wiring, and cables used in
component power supply meet Bellcore NEBS TR-NWT-63 requirement for
Fire Resistance in section 4.3.3.
Is there any similarity between UL flammability and Bellcore fire
resistance?
Parviz Boozarpour, P. E.
Electronic
Keith,
Don't know of any test houses that have a Surge generator with 2
Ohms of source impedance. Haefely-Trench make one, called the
PSURGE 30.1. Their phone # is (703) 494-1900. Ask for Leo
Makowski. When I bought one for Fluke, it was about $90k. It will
Hello Parviz: One way to verify that your supplier is in compliance to the
Bellcore specifications is to ask for a Certificate of Conformance (C of C),
stating compliance to these requirements. The more specific you are the
better. As suppliers of magnetics to the telecommunications
Eric,
I'll chip in my two cents here, having had some experiences with conductive
coatings. I've seen emission problems from products with both nickel
coatings and copper. Problems have been due to incomplete coverage,
failure to fill details, and unauthorized vendor mechanical changes.
You
George -
The answer to your question is: yes. However, in the US, this is type
of system is used to deliver power to homes and there are either no or
very few homes supplied with three-phase power. Such a system would be
abhorrent to any user of all three phases, who would prefer the
Russian certification is done through GOSSTANDART. The GOST certificate
is based on testing which is similar to the rest of the world (e.g. IEC
950, CISPR22, etc.). CE marking does not however satisfy the
requirements. There are a few companies that can offer the GOST
certificate. One of them is
PSNet
Susceptibility Analysis of Arbitrarily Shaped 2-D Slotted Screens
Using a Hybrid Generalized Scattering Matrix Finite-element Technique by J
V B Tejedor, L Nuno M F Battaller , Spanish authors in IEEE Transactions
on Electromagnetic Compatibility, Vol 40, No 1, February 1998
Dear Group,
Is there any in the group that is familiar with the Partial Discharge Test?
Have started to read IEC 664 Insulation coordination for equipment within
low-voltage systems, but find some details lacking. Thanks
Sincerely,
Frank Goto
A-pex International
[1]RUSSIA2/27/98
Hi,
I am on Jury Duty call for the work week starting Monday, 3/2 and ending 3/6.
For urgent issues, please contact
Tim Stover. Otherwise, I will respond to your e-mail as my schedule permits.
Regards,
Tony Fredriksson
To encourage activity in IEEE local chapters I have decided to make an offering
of my courses at reduced cost to those who are active or will become active
soon.
Please pass this information to all.
Richard Haynes is offering two courses at the NMi USA Inc in Tinton Falls(near
Freehold), NJ
Hi folks,
something seems not to be OK with the list server. I got twice this
message.
What does it mean?
Anybody else got similar messages ?
Greetings
George
--
**
* Dr. Georg M. Dancau * HAUNI MASCHINENBAU AG *
*
Good Morning.
Seeking opinions on use of RF choke in protective earth. Due to invertor
circuitry, rf noise is tripping GFCI. Series coil in P.E. appears to solve
problem. RF coil will not effect 10-25 A PE safety test done at 60 Hz. Also
coil shall be equivalent to AWG of PE conductor to pass
To: the whole group,
Does anybody have any information regarding EMC and safety
requirements in Russia. I know that in the past equipment could only
be imported with a certificate of conformity prepared by SGS, and
that the general EMC requirement was CISPR based (I think!) as to
safety I'm
Look for ANSI C63.5, telephone: 212.642.4900, http://www.ansi.org
Mirko Matejic
--
From: Bailin Ma
To: emc-p...@ieee.org
Subject: Antenna Factors of 3 Antennas
List-Post: emc-pstc@listserv.ieee.org
Date: Thursday, February 26, 1998 11:33AM
Hi,
Is anybody kind enough to give me a hint
Hi,
Is anybody kind enough to give me a hint where I should go to find
information on how to calibrate antenna factors of three antennas by using
those three antennas themselves.
Thank you.
Best Regards,
Barry Ma
408-778-2000 x4465
408-778-0239 Fax
I realize this may be slightly out of scope for this group, but maybe
someone has experience in this matter.
I need to analyze how adding antennas to an aircraft will affect
p-static dissipation for the aircraft. Specifically I would like to
know how the number of dischargers required for a
Dear all,
I find it a little wast of time to read about seminars and job's in parts
of the world where I never will come. Could we all try to include an
indication in the beginning of the mail of where in the world jobs and
training happens. Also for you Americans I'm not familiar with
Bill
Thanks for your reply. Our intention is to publish a few of the more
interesting QAs as a service to our UK readers. At the suggestion of Rich
Nute we will do this having first obtained permission and we will naturally
give full credit to all sources, which hopefully should result in
Folks,
How does one provide ESD immunity for 100BASE-T ethernet
ports without interfering with the signal?
Thanks for listening.
Mike Donnelly
---forwarded-message
Feb 24 15:07 1998
To:'emc-p...@majordomo.ieee.org' (BNR400)
From: Nathan Belsher:0H32(BNR) BNRTP BNR
Subject: Nortel Job Opportunities in EMC Product Safety
Nortel (Northern Telecom), a leading global manufacturer of
Hello Everyone
We publish the UK EMC Journal and would like to publish some of the QAs
that appear here. Does anyone out there have a problem with this. Your
comments would be welcomed. We want to build up a list of FAQs which will
also be published on our web site.
Best Regards
Alan E
I am working on an electronic medical device certification for one of our
customers. The product has already passed CE (EMC)requirements, EN60601-1-2,
including CISPR 11 Emissions testing. From an EMC standpoint, do we need to do
anything besides emissions for AS/NZS 2064, 12?
It doesn't
anybody have any opinions on conductive coatings on plastic for rfi/emi
protection? we've been very successful at designing our products to
be quiet and immune even in plastic boxes but i've been asked to
look into conductive coatings for further protection. i've ordered some
spray/brush on
American Power Conversion currently has three openings for Product Safety
Engineers in Billerica, Mass. The candidate(s) should be familiar with IEC
950. Knowledge of UL 1778, CSA 107.1, EN 50091, and the Low Voltage
Directive is a plus. Ability to process paperwork and an attention to
detail
Hate to be another ditto but I'm also seeing
this effect with emc-pstc and some other
listservers with which I'm subscribed.
Greetings,
This is in follow-up of the thread started last week, regarding standards
requirements for Brazil. There were numerous requests for the address for
the ABNT, so I'm sending this to the entire forum, rather than answer
individually.
Comitê Brasileiro de Eletricidade - COBEI
Associação
Bonjour de Montreal,
I just read in the ERA Safety and EMC Newsletter that Part 1 (emissions)
and Part 2 (immunity) of EN 55103 Audio, video, audio-visual entertainment
lighting control apparatus for professional use have been published in the
Official Journal of the European Communities (OJ).
Pryor -
The 1997 version of the standard cannot be used as sefl-certification
standard until it is referenced in the Official Journal (OJ).
The idea was that the OJ would list the standard and also list the date
of withdrawal (dow) of conflicting standards (in this case the 1992
edition),
however, for FCC Rules, Part 68 (telephony) requirements,
Registration is the only choice. Many persons confuse the two.
Tania Grant, Lucent Technologies, Octel Messaging Division
tgr...@lucent.com
__ Reply Separator
I have a question regarding a unique piece of equipment to be shipped
to the EC. It is is a training system used specifically at schools
for vacuum training courses. Several components which make up this
system are CE marked while a few are not. My question is Is
Dear Eric,
I do not think that you should interpret the list as mentioned below as a list
of equipment falling under the EMC-directive. It is a list showing which
apparatus might get disturbed by a not-EMC apparatus, and showing the relative
importance of the EMC-directive related
I am resending this inquiry, due to the very limited responses, if you have
information that can help me, please pass it along. Thanks!
--
From: Frazee Doug[SMTP:dfra...@windermeregroup.com]
Sent: Monday, March 02, 1998 3:15 PM
To: 'emc-p...@ieee.org'
Cc: Banchero, Bill
BABT Product Service is currently looking for a lead EMC Engineer for our
facility located in Santa Clara California. The requirements include a
strong technical background with skills in providing customers with EMC
solutions through troubleshooting or design techniques. This person must
We have submitted a 510(k) file for one of our ECG devices. The indication
for use is to be used by a physician to analyze cardiac performance and
in the description we say: can be equipped with a resting interpretation
program offered to the physician on advisory basis only. We classified it
-Original Message-
From: Richard Haynes vale...@pluto.njcc.com
To: emc-p...@ieee.org emc-p...@ieee.org; t...@world.std.com
t...@world.std.com; e-saf...@dorado.crpht.lu e-saf...@dorado.crpht.lu
Cc: Michael J Azar mja...@emc-turntech.com; Tom Tortoriello
tomtort...@aol.com;
EMC/EMI/ESD Issues Related to Corrosion and MaterialsReliability
Greetings,
Presentations on the above named subject matter are scheduled for
various times through this year in California, New Jersey, Mass. and Ga.
If interested in details, please contact by private e-mail to:
NJ:
PSNet
Thanx to Mirko Matejic for pointing out this acceptance of GTEM's
which is useful for products evaluated to US requirements.
Ideal correlation between GTEM and OATS is not expected.
Few
years ago in a Public Notice FCC laid out conditions for
What article of the US National Electrical Code specifies the wiring
installation requirements for rf outputs of commercial transmitters (not
amateur) from the transmitter output to the antenna? The best I can find
is Article 820 but that may be a stretch.
Ideal correlation between GTEM and OATS is not expected. Few
years ago in a Public Notice FCC laid out conditions for accepting
final compliance data from GTEMs.
Mirko Matejic
The Foxboro Company
Foxboro, Massachusetts
[fixed date below]
Recently there was two seperate comments on this list server about a new
metric-only requirement for Japan with a possible deadline of 1-1-199[9].
In chasing down this issue, I have the following tentative and marginally
useful info (in other words, normal internet banter) to
Does anyone know what chapter(s) of IEC364, Electrical Installations of
Buildings, covers signalling and control circuits? These circuits may be
called band 1 and band 2 circuits.
I am looking for 10 - 12 pre-owned filters for shielded enclosures. The
filters should be:
277VAC
60 - 100 A
100dB DC-18GHz
If you have any of these items that you are trying to get rid of, please
contact me directly.
Bob Martin
ITS - Northeast
Boxborough MA
(978)263-2662
That is the very choke that one would look for during a laboratory
assessment. For (conducted) emission measurements with open, 400 uH,
ground the safety ground, PE, is still connected (at 50 Hz).
Such component does not violate any safety standards that I can think of.
Matthias R. Heinze
TUV
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