RE: Source for doing MTBF Calculations

[Grant, Tania (Tania)]

Mike,
 
I have a 1996 posting to this list that provides several resources.   See
attached Word document below:
 
Tania Grant,  tgr...@lucent.com
Lucent Technologies, Switching Solutions Group
Intelligent Network and Messaging Solutions


-Original Message-
From: Mike Campi [ mailto:mike.ca...@setengineering.com
 ]
Sent: Friday, October 13, 2000 2:26 PM
To: Emc/Pstc (E-mail)
Subject: Source for doing MTBF Calculations



I hope that someone in this group can help me find this information. I have
been asked to find an outside source or company that can do MTBF reports.
Any information would be appreciated.

Thanks,

Mike Campi
EMI Engineer
Set Engineering, Inc.
V(408) 778-6238, F(408) 778-6288


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CALC.DOC
Description: MS-Word document

Source for doing MTBF Calculations

[Mike Campi]

I hope that someone in this group can help me find this information. I have
been asked to find an outside source or company that can do MTBF reports.
Any information would be appreciated.

Thanks,

Mike Campi
EMI Engineer
Set Engineering, Inc.
V(408) 778-6238, F(408) 778-6288


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RE: Ratification of EN 61000-3-2 A14

[O'Shaughnessy, Paul]

Thank you very much for publishing that, Gert.

The original 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.

Paul O'Shaughnessy

> -Original Message-
> From: CE-test - Gert Gremmen Ing. - CE-mark & more ...
> [mailto:cet...@cetest.nl]
> Sent: Friday, October 13, 2000 1:17 PM
> To:   Emc-Pstc@Ieee. Org
> Subject:  Ratification of EN 61000-3-2 A14
> 
>  << Message: Untitled Attachment >>  << File: Gert Gremmen.vcf >> 

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Re: MOV's

[Patrick Lawler]

On Thu, 12 Oct 2000 13:22:30 EDT, lfresea...@aol.com wrote:
>does anyone have a SPICE model for an MOV?
>
>Thanks,
>Derek.

Take a look at the models offered by Intusoft
http://www.intusoft.com/Models.htm , and look for the 'Varistors' link.

Also try Littelfuse.  They now own the Harris/GE varistor product line:
http://www.littelfuse.com/
Do a search for the LA product series.  There's a link at the bottom of the
page for the SPICE models.


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RE: IEC 825.

[WOODS]

Bob, there are five classes of lasers (1, 2, 3A, 3B and 4) and their limits
depend upon wavelength and exposure duration. You will have to provide more
information.

Richard Woods

--
From:  Chaplis, Bob [SMTP:chapl...@genrad.com]
Sent:  Friday, October 13, 2000 3:36 PM
To:  'emc-p...@ieee.org'
Subject:  IEC 825.


All,

I do not have a copy of EN60825-1.  Can any body tell me what
the output
radiation level is if it is specified as
  " In accordance with IEC 60825-1, 11.93."  Any help would be
appreciated. 


 Thank You

   Bob Chaplis

   Genrad  

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Centralized DC power systems

[Gary McInturff]

Confused and missing something pretty basic here, I think.
As I look at the diagrams in annex NAB for UL 1950 or UL60950 I am
pretty confused. 
What it appears to show me is a floating system -48 and -48
reference lines into the power supply system. Do I really have to float my
circuit boards etc, (ungrounded SELV?), and use the -48 reference line as
the return path rather than chassis and its bonding wire (grounded SELV).
Logic and chassis are not tied togeather until after a considerable distance
down the line?
Am I stairing into the obvious and missing the point?
Heavy sigh
Gary




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IEC 825.

[Chaplis, Bob]

All,

I do not have a copy of EN60825-1.  Can any body tell me what the output
radiation level is if it is specified as
  " In accordance with IEC 60825-1, 11.93."  Any help would be appreciated. 


 Thank You

   Bob Chaplis

   Genrad  

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EMC Position Available

[Price, Ed]

Hi Group!

I was just solicited for an EMC position by a technical job placement
company. I wasn't interested, but maybe someone on our list may be, so
here's the particulars. Usual disclaimers, contact the offerer directly.

Regards,

Ed




Jody Suter
B & M Air & Space
800-745-9675
j...@bmanet.com

The position is a Systems Analyst in the EMC group of Bell Helicopter in
Fort Worth, Texas.
It involves analysis of HIRF & Lightning effects.
It is a one year contract position.
Unofficially, the pay is $42/hour.





:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)
Ed  Price
ed.pr...@cubic.com
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA.  USA
858-505-2780 (Voice)
858-505-1583 (Fax)
Military & Avionics EMC Services Is Our Specialty
Shake-Bake-Shock - Metrology - Reliability Analysis
:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)



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Ratification of EN 61000-3-2 A14

[CE-test - Gert Gremmen Ing. - CE-mark & more ...]

The following was published yesterday by CENELEC:




  PRESS RELEASE 12 October 2000






CENELEC HAS JUST RATIFIED ESSENTIAL CHANGES TO ITS STANDARDS COVERING
ELECTROMAGNETIC COMPATIBILITY



Industry has been lobbying for a long time for publication of essential
changes to EN 61000-3-2 which gives a presumption of conformity to the EMC
Directive. At its Technical Board meeting on the 4th October, the necessary
amendment was ratified for publication by the end of the year.



During its meeting in Lucerne (October 3-5), the 105th CENELEC Technical
Board ratified the amendment A14 to the standard EN 61000-3-2:1995
“Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for
harmonic current emissions (equipment input current up to and including 16A
per phase)”.

The following implementation dates were fixed:

Date of ratification:   2000-10-03

Date of announcement:  2000-12-01

Date of publication:  2001-01-01

Date of withdrawal:  2004-01-01



The rapid availability of EN 61000-3-2:1995/A14 to the National Committees
will be ensured as well as the urgent transmission of the EN reference to
the European Commission for immediate publication in the Official Journal
under the heading of the EMC Directive.



With the present decision, it is ensured that from the first of January 2001
the relevant products will have the possibility of choice to benefit from
the presumption of conformity to the essential requirements of the EMC
Directive by complying either with the specifications laid down in the EN,
or those of the EN as modified by its amendment 14 and this up to the first
of January 2004.  After this date only the latter configuration will apply.
This will be welcomed by many industrial circles and manufacturers
associations.







CENELEC, (the European Committee for Electrotechnical Standardization), has
the institutional responsibility and authority in application of the
European Commission Directive 98/34/EC for proposing, adopting and editing
the European electrotechnical standards for products and services brought on
the European Market. CENELEC adopts the required standards, in co-operation
with the IEC, ETSI and CEN. CENELEC also seeks to co-ordinate voluntary
certification and testing schemes for electrotechnology. CENELEC
deliverables are European Standards (EN), Harmonization Documents (HD), or
European Pre-Standards (ENV), Reports and European Specification (ES). When
European standards deviate from International standards, they do so via
common modifications. These achievements create a unified and open market
for the whole world.





Ends





Regards,

Gert Gremmen, (Ing)
Ce-test, qualified testing

==
Web presence  http://www.cetest.nl
CE-shop http://www.cetest.nl/ce_shop.htm
/-/ Compliance testing is our core business /-/
==
<><>

RE: ENV standards

[Barry Ma]

Ari,

Do you have any idea when ENV 50204 should be totally replaced?

Barry
-
On Fri, 13 October 2000, ari.honk...@nokia.com wrote:

> 
> 
> ENV 50204 is still alive, the others are not.
> regards,
> Ari Honkala
> 
> > -Original Message-
> > From: EXT am...@westin.org [mailto:am...@westin.org]
> > Sent: Friday, October 13, 2000 12:53 PM
> > To: emc-p...@majordomo.ieee.org
> > Subject: ENV standards
> > 
> > 
> > 
> > Dear members,
> > 
> > Regarding the European standards in the ENV-series, ENV50140 
> > / 50141 / 50142, 
> > are all of them withdrawn or superseeded ? Any of those 
> > standards which still 
> > are valid ?
> > 
> > I've heard different versions across and I'd like to hear 
> > your opinion. 
> > Personally, I thought all of them was out of date (withdrawn 
> > /superseeded).
> > 
> > Best regards
> > Amund Westin
> > am...@westin.org 
> > 
> > -- 
> > Get your firstname@lastname email for FREE at 
> > http://NamePlanet.com/?su
> > 
> > --
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> 
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RE: A1 of EN61000-4-3

[WOODS]

Good question. This does appear to be a problem. It appears that the dates
for the Basic standards, when they are first published, are set by their
adoption in the Generic, Family and Product standards. Therefore the DOP and
DOW of those higher level standards govern when we must use the Basic
standards for the first time. But the Commission has no means to tell us
when we may (DOP) or must (DOW) adopt any revisions to those referenced
Basic standards. It appears then that we should follow the DOP and DOW
published in the revisions of the Basic standards.

Richard Woods

--
From:  rehel...@mmm.com [SMTP:rehel...@mmm.com]
Sent:  Friday, October 13, 2000 11:31 AM
To:  wo...@sensormatic.com
Cc:  emc-p...@majordomo.ieee.org
Subject:  RE: A1 of EN61000-4-3



Richard, perhaps you or someone can help me with basic standards. It
is my
understanding that DOWs are set by the European Commission (and not
CENELEC) and
the DOWs are published in the Official Journal. Since basic
standards do not
appear in the Official Journal, how does the European Commission
notify the DOWs
of basic standards?

Thanks
Bob
=




wo...@sensormatic.com on 10/13/2000 07:52:42 AM

Please respond to wo...@sensormatic.com


To:   emc-p...@ieee.org
cc:(bcc: Robert E. Heller/US-Corporate/3M/US)
Subject:  RE: A1 of EN61000-4-3




Barry, I don't have a copy of A1 either, but the dow is listed on
the
CENELEC web site as 2001-05-01.

Richard Woods

 --
 From:  Barry Ma [SMTP:barry...@altavista.com]
 Sent:  Thursday, October 12, 2000 4:30 PM
 To:  emc-p...@ieee.org
 Subject:  A1 of EN61000-4-3


 Hi,

 I don't have a copy of A1 of EN61000-4-3 at hand. Please help
me.
 (1) let me know when is the DOW of A1 for EN61000-4-3?
 (2) confirm the difference of A1 and ENV50204.
   A1: 800 - 960 MHz, and 1.4 - 2.0 GHz.
   ENV50204: 900 MHz at 200Hz/50%.

 Thank you.
 Best Regards,
 Barry Ma



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RE: A1 of EN61000-4-3

[reheller]

Richard, perhaps you or someone can help me with basic standards. It is my
understanding that DOWs are set by the European Commission (and not CENELEC) and
the DOWs are published in the Official Journal. Since basic standards do not
appear in the Official Journal, how does the European Commission notify the DOWs
of basic standards?

Thanks
Bob
=




wo...@sensormatic.com on 10/13/2000 07:52:42 AM

Please respond to wo...@sensormatic.com


To:   emc-p...@ieee.org
cc:(bcc: Robert E. Heller/US-Corporate/3M/US)
Subject:  RE: A1 of EN61000-4-3




Barry, I don't have a copy of A1 either, but the dow is listed on the
CENELEC web site as 2001-05-01.

Richard Woods

 --
 From:  Barry Ma [SMTP:barry...@altavista.com]
 Sent:  Thursday, October 12, 2000 4:30 PM
 To:  emc-p...@ieee.org
 Subject:  A1 of EN61000-4-3


 Hi,

 I don't have a copy of A1 of EN61000-4-3 at hand. Please help me.
 (1) let me know when is the DOW of A1 for EN61000-4-3?
 (2) confirm the difference of A1 and ENV50204.
   A1: 800 - 960 MHz, and 1.4 - 2.0 GHz.
   ENV50204: 900 MHz at 200Hz/50%.

 Thank you.
 Best Regards,
 Barry Ma


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FS: Filter

[Price, Ed]

Hi Group!

About a month ago, someone was looking for a big powerline filter for their
shielded enclosure. There's a three phase, 30 Amp powerline filter on eBay
at:

http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=462841868

Usual disclaimers; I'm not the seller; follow the link.


Regards,

Ed


:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)
Ed  Price
ed.pr...@cubic.com
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA.  USA
858-505-2780 (Voice)
858-505-1583 (Fax)
Military & Avionics EMC Services Is Our Specialty
Shake-Bake-Shock - Metrology - Reliability Analysis
:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)



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RE: DC circuits

[Joe Finlayson]

Scott,

My experience of going through a IEC 60950/UL 1950/CSA 950
evaluation with a -48VDC powered product resulted in the following.  The
entire box was treated as a SELV circuit requiring Operational Insulation.
UL does not necessarily require dielectric testing for Operational
Insulation.  I used method (c) to comply with the requirements in section
5.4.4.  Per UL PAG 5.4.4-001, there was no short circuit testing required as
the PCB was rated 94V-0, as are most PCB's these days.  The beauty of this
was that no dielectric testing was required and therefore no production line
testing.

Thx,


Joe


Joe Finlayson
Manager, Compliance Engineering
Telica, Inc.
734 Foster Street, Bldg. G, Suite 100
Marlboro, MA 01752
Tel:(508) 480-0909 x212
Fax:(508) 480-0922
Email:  jfinlay...@telica.com



-Original Message-
From: Scott Lemon [mailto:sle...@caspiannetworks.com]
Sent: Wednesday, October 11, 2000 1:17 PM
To: Emc-Pstc Bulletin Board (E-mail)
Subject: DC circuits 

RE: Color coding for U.S. 3 phase

[Peter Tarver]

Kurt -

Except under special circumstances, the USNEC does not use color coding for
phase conductors.  There are reserved insulation colors for ground (green,
with one or more yellow stripes) and for neutral (white or "natural gray"
[whatever that is]).  Otherwise, your free to use whatever color you find
aesthetically pleasing, provided there is no confusion about what conductor
should connect to where.  If your product requires a particular phase
ordering, this should be identified on a wiring diagram and labeling of the
connection points.

Regards,

Peter L. Tarver, PE
ptar...@nortelnetworks.com


-Original Message-
From: Andrews, Kurt [mailto:kandr...@tracewell.com]
Sent: Thursday, October 12, 2000 2:45 PM

Group,

Is there a standard color coding for 120/208V 3 phase wiring inside a
product for U.S. use only? The product in question is ITE and I can find
nothing in UL 1950 about color coding other than green/yellow must be used
for ground. Thanks in advance for your help.

Kurt Andrews

RE: A1 of EN61000-4-3

[WOODS]

Barry, I don't have a copy of A1 either, but the dow is listed on the
CENELEC web site as 2001-05-01.

Richard Woods

--
From:  Barry Ma [SMTP:barry...@altavista.com]
Sent:  Thursday, October 12, 2000 4:30 PM
To:  emc-p...@ieee.org
Subject:  A1 of EN61000-4-3


Hi,

I don't have a copy of A1 of EN61000-4-3 at hand. Please help me.
(1) let me know when is the DOW of A1 for EN61000-4-3?
(2) confirm the difference of A1 and ENV50204.
  A1: 800 - 960 MHz, and 1.4 - 2.0 GHz.
  ENV50204: 900 MHz at 200Hz/50%.

Thank you.
Best Regards,
Barry Ma 


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RE: A1 of EN61000-4-3

[WOODS]

IMHO a Basic standard has a dow. The Generic, Product or Family standard may
indicate that the undated reference to the Basic standard includes the
latest version including any amendments. The dow in the revision or
amendment provides guidance as to the latest possible effectivity date of
that revision or amendment.

Richard Woods

--
From:  rehel...@mmm.com [SMTP:rehel...@mmm.com]
Sent:  Friday, October 13, 2000 7:10 AM
To:  Barry Ma; emc-p...@majordomo.ieee.org
Subject:  Re: A1 of EN61000-4-3




I do not think that "basic" standards have DOWs. I believe that they
become
effective when they are called out by a "higher" standard.

=




"Barry Ma"  on 10/12/2000 03:30:14 PM

Please respond to "Barry Ma" 


To:   emc-p...@ieee.org
cc:(bcc: Robert E. Heller/US-Corporate/3M/US)
Subject:  A1 of EN61000-4-3




Hi,

I don't have a copy of A1 of EN61000-4-3 at hand. Please help me.
(1) let me know when is the DOW of A1 for EN61000-4-3?
(2) confirm the difference of A1 and ENV50204.
  A1: 800 - 960 MHz, and 1.4 - 2.0 GHz.
  ENV50204: 900 MHz at 200Hz/50%.

Thank you.
Best Regards,
Barry Ma


___

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Re.: ENV standards

[Helge Knudsen]

Hello Amund,
Acording to the Cenelec year 2000 Cataloque, issue 2, those ENV's are 
withdrawn, text from cataloque:

ENV 50140 Superseded by EN 61000-4-3:1996
ENV 50141 Superseded by EN 61000-4-6:1996
ENV 50142 Withdrawn

Best regards

Helge Knudsen
DELTA
EMC Testing
Venlighedsvej 4, DK-2970 Hoersholm
Telephone: +45 45 86 77 22
Fax: +45 45 86 58 98
Email: h...@delta.dk 
Webpage: www.delta.dk 


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RE: ENV standards

[ari . honkala]

ENV 50204 is still alive, the others are not.
regards,
Ari Honkala

> -Original Message-
> From: EXT am...@westin.org [mailto:am...@westin.org]
> Sent: Friday, October 13, 2000 12:53 PM
> To: emc-p...@majordomo.ieee.org
> Subject: ENV standards
> 
> 
> 
> Dear members,
> 
> Regarding the European standards in the ENV-series, ENV50140 
> / 50141 / 50142, 
> are all of them withdrawn or superseeded ? Any of those 
> standards which still 
> are valid ?
> 
> I've heard different versions across and I'd like to hear 
> your opinion. 
> Personally, I thought all of them was out of date (withdrawn 
> /superseeded).
> 
> Best regards
> Amund Westin
> am...@westin.org 
> 
> -- 
> Get your firstname@lastname email for FREE at 
> http://NamePlanet.com/?su
> 
> ---
> This message is from the IEEE EMC Society Product Safety
> Technical Committee emc-pstc discussion list.
> 
> To cancel your subscription, send mail to:
>  majord...@ieee.org
> with the single line:
>  unsubscribe emc-pstc
> 
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> 
> For policy questions, send mail to:
>  Richard Nute:   ri...@ieee.org
> 
> 

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Re: A1 of EN61000-4-3

[reheller]

I do not think that "basic" standards have DOWs. I believe that they become
effective when they are called out by a "higher" standard.

=




"Barry Ma"  on 10/12/2000 03:30:14 PM

Please respond to "Barry Ma" 


To:   emc-p...@ieee.org
cc:(bcc: Robert E. Heller/US-Corporate/3M/US)
Subject:  A1 of EN61000-4-3




Hi,

I don't have a copy of A1 of EN61000-4-3 at hand. Please help me.
(1) let me know when is the DOW of A1 for EN61000-4-3?
(2) confirm the difference of A1 and ENV50204.
  A1: 800 - 960 MHz, and 1.4 - 2.0 GHz.
  ENV50204: 900 MHz at 200Hz/50%.

Thank you.
Best Regards,
Barry Ma

___

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___


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RE: EN50107

[Colgan, Chris]

According to BSI, the title of EN50107 is
"Signs and luminous-discharge-tube installations operating from a no-load
rated output voltage exceeding 1 kV but not exceeding 10 kV" 
which looks like a standard applying to luminous advertising installations
and the like.

Regards

Chris Colgan
EMC & Safety
> TAG McLaren Audio Ltd
The Summit, Latham Road
Huntingdon, Cambs, PE29 6ZU
United Kingdom
> * Phone: +44 (0)1480 415627
> * Fax: +44 (0)1480 415689
> * Mailto:chris.col...@tagmclarenaudio.com
> * http://www.tagmclarenaudio.com
> 
> 
> 
> -Original Message-
> From: Peter Merguerian [SMTP:pmerguer...@itl.co.il]
> Sent: 13 October 2000 11:09
> To:   emc-p...@majordomo.ieee.org
> Subject:  EN50107
> 
> 
> Dear Group,
> 
> Does anyone know the scope of EN50107? Does it apply to a Leakage Current
> Sensor?
> 
>  
> Peter Merguerian
> Managing Director
> Product Testing Division
> I.T.L. (Product Testing) Ltd.
> Hacharoshet 26, POB 211
> Or Yehuda 60251, Israel
> 
> Tel: 972-3-5339022 Fax: 972-3-5339019
> e-mail: pmerguer...@itl.co.il
> website: http://www.itl.co.il 
> 
> TO LEARN ABOUT AUSTRALIAN AND NEW ZEALAND REQUIREMENTS, CONTACT ME AT THE
> EARLIEST STAGES OF YOUR DESIGN; REQUIREMENTS CAN BE TRICKY!
> 
> 
> 
> 
> 
> 
> ---
> This message is from the IEEE EMC Society Product Safety
> Technical Committee emc-pstc discussion list.
> 
> To cancel your subscription, send mail to:
>  majord...@ieee.org
> with the single line:
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> 


**  
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**

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EN50107

[Peter Merguerian]

Dear Group,

Does anyone know the scope of EN50107? Does it apply to a Leakage Current
Sensor?

 
Peter Merguerian
Managing Director
Product Testing Division
I.T.L. (Product Testing) Ltd.
Hacharoshet 26, POB 211
Or Yehuda 60251, Israel

Tel: 972-3-5339022 Fax: 972-3-5339019
e-mail: pmerguer...@itl.co.il
website: http://www.itl.co.il 

TO LEARN ABOUT AUSTRALIAN AND NEW ZEALAND REQUIREMENTS, CONTACT ME AT THE
EARLIEST STAGES OF YOUR DESIGN; REQUIREMENTS CAN BE TRICKY!






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ENV standards

[amund]

Dear members,

Regarding the European standards in the ENV-series, ENV50140 / 50141 / 50142, 
are all of them withdrawn or superseeded ? Any of those standards which still 
are valid ?

I've heard different versions across and I'd like to hear your opinion. 
Personally, I thought all of them was out of date (withdrawn /superseeded).

Best regards
Amund Westin
am...@westin.org 

-- 
Get your firstname@lastname email for FREE at http://NamePlanet.com/?su

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