Hi all,
I would like to know if anyone could point me to any articles or studies of
real world mains born interference that substantiate the need to test
equipment for immunity to these phenomena. I want to convince an engineer
from another company that the standards my company has chosen to ado
I agree with Stephen, except that I would exert a great deal of my energy to
have this corrected by the power supply manufacturer, -- and fast! The
manufacturer is in danger of loosing your business unless this gets
resolved.
Try to resolve this in parallel, assuming it is the same NRTL: a
The answers are: 1) Yes, and 2) Yes.
1) The original Cenelec press release is available in PDF format from the
CENELEC web site, at
http://www.cenelec.org/ . (Go to Press Release, then click on the link
<12102000.PDF> Changes to the
EMC standards are ratified.) Many thanks are due to Paul O'Shau
Gert, Thanks for your clarification.
Paul, I also include your nice explanation below.
I speculate that the main point of A14 of EN61000-3-2 is to retain Class D
requirement only for PC, PC monitor and TV, and replace Class D requirement
with Class A for other equipment.
Please verify my conj
Not surprised Doug. That's happened to a colleague of mine
from a MAJOR electronics company.
I also, had a similar discrepancy' problem (but with different component) .
. .also
with a major NRTL. "Oh. The engineer that wrote THAT report must've
misinterpreted
the standard that applies to that co
I've had this kind of thing pulled on me before, to. Start with their team
leader, then group leader , then section head, then dept. manager, until you
get satisfaction.
Peter Tarver
ptar...@nortelnetworks.com
-Original Message-
From: Doug [mailto:dmck...@gte.net]
Sent: Thursday, October
The URL for the paper by RFI is either:
http://www.rfi.co.uk/hp_sheets/vehicle.pdf
or
http://www.rfi.co.uk/hp_sheets/vehicle.htm
depending on the form you prefer.
The links at their web site did not work for me, but I
was able to "piece together the evidence," and get
FCC Pt15 states that you can use their limits or, alternatively, the limits
found in CISPR 22:1995. Your EN Class B data should be sufficient for
having your lab generate an FCC B (or A) report.
Jack
-Original Message-
From: Colgan, Chris [mailto:chris.col...@tagmclarenaudio.com]
Sent:
Hi Doug:
Your message was not clear whether you submitted
your product to the same NRTL that certified the
power supply.
Basically, your cert engineer has put YOU in the
middle of a beef between cert engineers or between
cert houses.
Your cert engineer found a fault in the power
supply cer
You are right Barry,
The decision was in favor and there are no other equipment
yet defined in Class D. I have send the list a press release
from cenelec a few days ago about this subject.
However, this was a compromise between
industry fighting against and power companies on the other side.
It w
Advanced Input Devices, an Esterline Technologies company, located in
beautiful Coeur d' Alene, Idaho, (30 miles east of Spokane, WA) is looking
for a Compliance Engineer. A.I.D. is a world leader in the manufacturer of
custom keyboards and control panels. We are a subsidiary of Esterline
Techn
Guys,
A couple of years ago, we designed a cigarette lighter adapter for one of
our products. At the time, I looked into the Automotive EMC Directive
95/54/EC. I found the following references. Surf at your own risk, I'm not
sure if these websites and html's are still out there!
www.rfi.co.uk
Doug,
You don't say for certain, but can we assume
that the fact that the NTRL even knew of the
internal fuse's limitations - that you and the ps
company used the very same NRTL, including
the same office?
Or is this a case of one NRTL not accepting
the 'interpretation' of another?
Doug,
Well, as I remember a Recognized component is incomplete and has
Conditions
of Acceptability attached to it which subsequent users (including you, the
using manufacturer) plus the NRTL engineers are supposed to consider in
applying the component in your application.
I do r
Hi
I think there is no lab in the US.
You have to carefull which lab you choose.
Reason:
The labs are accredeted by the national authorities and at this time the
national authorities only accept tests form lab they accredited.
In practice if you use an accredeted Lab in Germany (e.g) CETECO
I'm just about ready to escalate this issue.
Issue: Major NRTL has recognized a DC-DC power supply.
Said ps is being used within the confines of
it's stated purpose, input power, output power,
temps, etc ...
Said product is submitted to NRTL for what appeare
I read an article about EN61000-3-2 in p2 of
http://www.techintl.com/pdfs/newsletters/sd_news2000.pdf
titled "Deficiencies of EMC Harmonics Standards Are Addressed".
It reads: "Several national standards organizations have asked the EC and
CENELEC for an extension to the date of withdrawal of co
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
I would say that you have to list the amendments.
For instance some of our products currently comply with EN55013:1990 + A12 +
A13 and this is stated on the DoC.
I am currently re-testing these products to include A14:1999. I will
re-issue the DoCs stating this.
If I just stated EN55013:1990 o
I know Elite in Chicago have been looking into Automotive testing, give Ray
Klouda a call.
Derek.
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This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
To cancel your subscription, send mail to:
m
EN 45014:1998 specifies the "General criteria for supplier's declaration of
conformity." Concerning the identification of standards, the document says
the DoC shall contain "the referenced normative documents in a precise,
complete and clearly defined way . . ." The example of a DoC in Annex A
l
TUV Rheinland is heavily involved in automobile testing in Germany. You
might try them.
Richard Woods
--
From: Ned Devine [SMTP:ndev...@entela.com]
Sent: Thursday, October 19, 2000 8:55 AM
To: IEEE EMC/Product Safety (E-mail)
Subject: Automotiv
So, you didn't want the job then Chris?
Chris.
"Colgan, Chris" on 19/10/2000 09:58:22
Please respond to "Colgan, Chris"
Sent by: "Colgan, Chris"
To: "'Emc-Pstc'
cc:(Chris Allen/GB/3Com)
Subject: RE: For UL watchers... a job opening...
Looks like an essential requiremen
Chris,
I have researched this topic recently. There are apparently no requirements
at the national level. The Dept of Fair Trading of New South Wales has
authority over product safety in that state. Fundamental requirements can be
found in ELECTRICITY SAFETY (EQUIPMENT SAFETY) REGULATION 1999.
Hi,
I have been volunteered to research the Automotive EMC Directive. What I
have found so far is,
- The directive is 95/54/EC which is an amendment to 72/245/EEC.
- The directive is an "old approach" and has all of the necessary test
procedures and methods in the directive.
-
Thanks again to everyone who helped explain then similarities between FCC
part 15 vrs. CISPR 22 requirements!
B. Keith Zell
Electrical Design Engineer
PMI Food Equipment Group
Troy, OH 45374
(937) 332-3067 (ph)
(937) 332-3007 (fax)
zell...@pmifeg.com
NEBS Tested does not mean NEBS Compliant!
Dave Wilson on 10/18/2000 08:44:06 PM
Please respond to Dave Wilson
To: "'ron_du...@agilent.com'" , emc-p...@ieee.org
cc: john_mahlb...@agilent.com (bcc: Penny D. Robbins/Telcordia)
Subject: RE: NEBS compliant Power Supplies.
The Hendry
Chris,
My point was EUT-related, not spec-related. You must perform FCC conducted
RF emissions testing with the correct US mains interface, or be prepared to
justify that the 230V test results are sufficiently equivalent (e.g. based
on past history).
Your point on limits is valid, but moot if y
forwarding for chas...@email.msn.com
Reply Separator
Subject:High Frequency Measurements Seminar
Author: "chasgra"
List-Post: emc-pstc@listserv.ieee.org
Date: 10/18/00 6:29 PM
To all interested parties:
Rocky Mountain Chapter EMC Society presen
Looks like an essential requirement is the ability to write long winded,
self congratulatory mission statements.
Chris
> -Original Message-
> From: Rich Nute [SMTP:ri...@sdd.hp.com]
> Sent: 18 October 2000 23:49
> To: emc-p...@majordomo.ieee.org
> Subject: For UL watchers... a job
No.
The class B FCC limits for conducted disturbance at the mains ports are
lower than EN55022 class B.
QP limits:
FCC - 0.45 to 30MHz = 48dBuV
EN - 0.15 to 0.5MHz = 66 to 56dBuV (decreasing linearly with the log of
frequency)
0.5 to 5MHz = 56dBuV
5 to 30MHz = 60dBuV
Radiated disturb
Chris,
Here is my 2 cents worth:
1. For ITE such as a computer or router (without a connection to a
telecommunication network), the applicable standards and requirements are
AS3260 (safety) and
AS3548 (emc) and the manufacturer applies the C-Tick Mark (ie for EMC
Compliance). EMC is mandatory, s
The Hendry power supplies displayed at the NEBS 2000 symposium in Las Vegas
all bore NTS "NEBS Tested" labels.
Regards,
Dave Wilson
Alidian Networks
-Original Message-
From: ron_du...@agilent.com [mailto:ron_du...@agilent.com]
Sent: Wednesday, October 18, 2000 3:22 PM
To: emc-
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