31891b757c09184bbfec5275f85d55950b0...@cceexc18.americas.cpqcorp.net,
Lesmeister, Glenn glenn.lesmeis...@compaq.com wrote:
Why should all equipment need harmonic control when only some equipment
cause problems?
That's what the Amendment A14 to EN61000-3-2 (also voted positive by a
majority of
sa9d1398.077@sao0002n, SERGIO LUIZ DA ROCHA LOURES SERGIO
sergioro...@siemens.com.br inimitably wrote:
Can the group tell me if there is any requirement about isolations of lead
acid
battery terminals?
We have a 48V equipment powered by lead acid batteries. The negative of the
batteries set is
91f59c34502abee3f414a3dbc8e164923a9cf...@lxe.com, Wismer, Sam
wisme...@ems-t.com inimitably wrote:
No disrespect to the test labs out there because I have gotten a lot of good
information from some, but I encourage folks to get there information from
multiple sources and include the actual
4203d61676d0ae468aa5cea90a891c13235...@cof110avexu4.global.avaya.com,
Wagner, John P johnwag...@avaya.com inimitably wrote:
The European harmonics standard IEC 61000-3-2, and I call it European
because that is exactly what it is,
Indeed, that's because (and it is a matter of record)
I can't help with a definitive answer, but the exact same situation exists
in automobiles, right? I have never seen a car where I couldn't have made a
connection between B+ and the fender wells using a socket or open end
wrench.
--
From: SERGIO LUIZ DA ROCHA LOURES SERGIO
Hello group,
Does anyone know of any compliance issues for Fiber Optics? We are planning
to design a line of copper to fiber optic converters.
Thanks,
Courtland Thomas
Patton Electronics
---
This message is from the IEEE EMC Society Product Safety
In most safety standards there are requirements for Energy Hazards that
could result in arcing or ejection of molted metal caused by short circuit
between adjacent poles. Large (car size) batteries definitely fall under
this category with their low impedance. UL1950 under General Principles
Hi Sérgio,
You might consider including warnings in the installation and service
guides as well as labels indicating an energy hazard presence with
instructions to refer to the proper manuals at least (to better define the
hazard). Caution statements regarding removal of jewelry (i.e.
Can the group tell me if there is any requirement about isolations of lead acid
battery terminals?
We have a 48V equipment powered by lead acid batteries. The negative of the
batteries set is connected to the enclosure. When the batteries need to be
replaced, short circuit happens if the tool
This month's Electrical Review (a free trade magazine in the UK)
has just fallen on my desk, with this text and its associated
picture taking up about a fifth of the area of the front page - I'm
quoting it just for interest with regard to this thread!
Perfect Harmony? Power conditioning
I have been watching and reading this thread -- having spent nearly 15
years dealing with the harminics issue in ITE and in general.
There are many anecdotes out there about hte effect of harmonic currents
on the electric supply. The on you cite is common. Distribution to
cubicle areas was
I can't really tell from your message what your product or test set-up is.
However, when you discharge to the chassis with the ESD gun, there is some
finite impedance to it's final destination. If you are discharging to some
small piece of metal or screw this impedance could be rather high (look
All;
It is my opinion that if Annex III is applied, that a notified body is not
required. Take for example 2.4GHz ISM equipment, although the frequency
band is not harmonized, the standards are(as of 14/2/2001), and according to
the Annex III, a notified body is not required. There is nothing
Hi all
Does anyone know if Agilent have written a software upgrade (for A14 of
EN61000-3-2) for their harmonics analysers yet? The Agilent website won't
tell and their contact link is broken.
Regards
Chris Colgan
Compliance Engineer
TAG McLaren Audio Ltd
The Summit, Latham Road
Huntingdon,
Everyone
The seventh draft of the revised EMC Directive has been produced by the
European Commission for discussion at the meeting of the EMC Working Party
on 6-7 March 2001. This meeting of member state governments (with some
representation from industry) is one of a regular series, the SLIM
There has always been argument about the intended meaning of the words which
Sam quotes from the RTTE and EMC Directives.
This issue seems to be being clarified in the latest version of the SLIM
document (SLIM7. This document is eventually intended to replace the
current EMC Directive.
This
There is some confusion over this subject:
1/ the ce marking directive still requires a rep on-board so resident on
European soil.
All New Approach directives under ce comply to this.
2/ The notified body (NB) is still required for RTTE not harmonized
standards
to prescribe a test
We have a similar scenario presently. It was explained by our Notified Body
this way:
We, company B, are ISO certified and wish to market company A's device into
the EU. However, company A is not ISO certified and wishes not to be (small
company with little cash). The Medical Device Directive
Hello Ravinder,
Your question is a bit difficult to answer. You appear to have reached some
conclusions on what is going wrong in the circuit, but do you have really
good information on the problem? I had a similar problem in an instrument
that had been designed prior to the widespread
of318a279e.2188070d-on85256a00.006a3...@somers.hqregion.ibm.com,
Edward Jones ejjo...@us.ibm.com inimitably wrote:
John, in response to your attached thread you may want to review some of
the field surveys that are available from the Low Frequency Emissions
Industry Coalition (LFEIC) @
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