eister, Glenn ; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] Source for Nameplate Rating Nomenclature
There is a 2001 EN version is also available for purchase
https://www.evs.ee/products/evs-en-61293-2001
From: Lesmeister, Glenn [mailto:glenn.lesmeis...@hpe.com]
Sent: Thursday, January 31, 2019 3
There is an IEC standard, IEC 61293 that covers this.
https://webstore.iec.ch/publication/5151
Regards,
Glenn Lesmeister
Product Regulatory Compliance
Hewlett Packard Enterprise Company
11445 Compaq Center Dr W
M/S 510101
Houston, TX 77070
Tel: 1 (512) 319-0591
. As for the limits, we are using A. I understand that D is used
exclusively for ITE and has tighter limits.
From: Lesmeister, Glenn [mailto:glenn.lesmeis...@hp.com]
Sent: Thursday, February 20, 2003 3:23 PM
To: Rick Busche; emc-p...@ieee.org
Subject: RE: Harmonics Testing for PCs
Rick,
You don't indicate how
Rick,
You don't indicate how all of the other components are wired in the power
distribution system. If you are balancing all load on the 3 phases, but only
have 2 cords for the graphics controller, you must have something else picking
up the slack on the 3rd phase. Are there any other
I guess you could argue that inrush (or startup) current is a voltage change
that was never specifically ignored by the standard and thus is covered. In
this case, I think some of the test equipment manufacturers missed the boat by
not providing a specific procedure for capturing this.
Sorry, a completely different issue.
Can anyone explain the relevance of IEC60799 with respect to ITE
detachable power supply cords? This standard is not referenced in
IEC60950, however, it is in the OJ. I don't have this document, so I
don't know what is specifically in the scope.
I have
Joshua,
This is indeed the test method and it is in the amendment to 61000-3-3.
It has been suggested that this new requirement is intended to specifically
address inrush current because the original standard was unclear about
this and there was no specific test method for it. However, the
Richard,
What is the test plan for making and breaking under load? In general, power
supplies take a little bit of time to start up, so making contact under load
is not going to be an issue. UL has specified a 200 cycle disconnect test
and all they are concerned with is condition of the
To: emc-p...@majordomo.ieee.org
Subject:Re: Products Electrical Ratings De-rated for Eurpoean Branch
Circuits
31891b757c09184bbfec5275f85d5595fd8...@cceexc18.americas.cpqcorp.net,
Lesmeister, Glenn glenn.lesmeis...@compaq.com inimitably wrote:
Does anyone know if it is common practice
Does anyone know if it is common practice or otherwise required to de-rate
products in Europe to 80% (or some other %) of the rating of the branch
circuit as is done in the US? Some product standards (such as 61000-3-2)
apply to products rated up to 16A, so it would appear that products can be
I think they have done a pretty good job describing this in the 3rd edition
of 60950, see 3.1.9. The 2nd edition seems only to regard this as
applicable to primary power terminals (3.3.4). This is probably why the
agencies had to apply their own interpretations (i.e. UL PAGs) over the
years.
Point of sale terminals and personal computers are both individually listed
as examples of equipment covered by IEC 60950. I think this gives you
adequate cause to treat it as class A.
Regards,
Glenn Lesmeister
Product Regulatory Compliance
Compaq Computer Corp. Tel: 281-514-5163
Doug,
I don't know your product line, but one thing that might be an issue is that
some of your customers may use your products as part of their end products
that do fall into the scope of the LVD. In order for them to meet the
applicable requirements, they are going to need sufficient
They did not include the amendment to 61000-3-3. The revisions to the
standard have passed, but apparently have not been formalized into an
amendment. Is it reasonable to expect that they will add it to the OJ at
any time or do they typically do these things on a periodic basis?
Regards,
...and thus you might not comply. Has the new A14 been given a DOP and DOW?
I haven't seen it yet. Normally, when new requirements are published there
is a DOW for existing requirements. Isn't it typically about 4 years? If
you've been gearing up to meet the existing EN61000-3-2 how could you
UL takes it upon themselves to verify that the laser product they are
certifying complies with the applicable FDA requirements. This can be
anything from a simple check of the CDRH report to a complete evaluation and
measurements of the laser. I believe at least some of their offices have
the
Does anyone know what specific FDA regulations would cover a system used in
medical imaging? It appears that it can go down to the BIOS level.
Happy Holidays
Glenn Lesmeister
glenn.lesmeis...@compaq.com mailto:glenn.lesmeis...@compaq.com
Compaq Tel: 281-514-5163
20555 SH 249,
I too have seen kids playing with these things. Even Seinfeld had an
episode where someone had a bead on George's head all throughout the show.
I have also seen people with pointers that were marked class IIIb.
I have heard differing opinions from people who work with Ethernet and Fibre
Channel
In most cases, Norway, Sweden and Finland? require supplementary insulation
for a primary circuit between TNV and Ground\/SELV. Assuming a primary
circuit of 250VAC, I believe this works out to 2.5mm creepage and 2.0mm for
clearance (I don't have my standard handy). In addition, you need 0.4mm
Rich,
I agree with your explanation, but I think that the requirements are
not properly worded.
Both cl 1.2.5.1 and 1.2.5.2 say ...plug and socket-outlet OR an
appliance coupler OR both. If my product uses an IEC320 plug for the
wall, and an IEC309 ac inlet to the product, is it type A or B?
Doug,
To answer your question of which is better:
The primary concern should have been the temperature of the windings
to see if the insulation (between primary and secondary?) would have
exceeded the allowable limits and thus possibly break down.
A (much lesser) secondary concern would have
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