Doug, There is so much confusion and inaccuracy out there on this topic I could
write a book on it. The majority of the OEM spec sheets I deal with do not
have the compliance information clearly identified and mix up the difference
between actual NRTL approvals and the standards. I can only
Caveat Emptor I guess.
From: John Woodgate [mailto:j...@woodjohn.uk]
Sent: Friday, July 19, 2019 11:13 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Listing confusion
Unfortunately, the DLC logos include the L-word:
https://www.designlights.org/terms/logo-guidelines/
Best wishes
John
Yes, and it is an especially fancy monogram too. Multi-color process makes
labels more expensive.
Best, Doug
On Fri, Jul 19, 2019 at 9:13 AM John Woodgate wrote:
> Unfortunately, the DLC logos include the L-word:
>
> https://www.designlights.org/terms/logo-guidelines/
>
> Best wishes
> John
Right.
Its an age old argument about UL Certified. I've had clients who believe
UL is a government department of some kind. The other NRTLs do spend some
effort to correct this mistake of their own validity vs UL, usually in the
form of a white paper and UL is nearly silent on the matter. Same
Unfortunately, the DLC logos include the L-word:
https://www.designlights.org/terms/logo-guidelines/
Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK
On 2019-07-19 15:43, Doug Powell wrote:
All,
Well actually, I'm not confused.
All,
Well actually, I'm not confused. But I'm certain some consumers are.
I ran across an LED lighting fixture product and they were promoting "*ETL
and DLC Listed*", of course I became curious. DLC is a consortium about
energy efficiency and in this company's view DLC gets top billing along
It replicates, because both are based on IEC TC109 insulation
co-ordination standards.
Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK
On 2019-07-19 13:54, James Pawson (U3C) wrote:
Thanks all,
I’ve found some voltage isolation
Thanks all,
I've found some voltage isolation and earthing requirements in clause 7.2.4
and 13.4.9 of EN 50155 which makes sense. Framing it against more familiar
territory for me, it appears to replicate the basic requirements of EN
62368-1 for 1.5kVac/2.1kVdc between AC mains @ 230Vac and
Dear James:
Insulation tests levels for rolling stock equipment are stated in EN 50155.
Have in mind that there are two versions in force in this moment and there are
some slight differences related with insulation tests. Creepage and clearances
are defined in EN 50124-1.
I'm not familiar
Hi James
For Electronic equipment used in rolling stock see:
EN 50155:2017 or IEC 60571
Regards
Andrea Mannucci
VDS Rail srl
Via Arno 23/25
50019 Sesto F.no (FI)
ITALY
> Il 19 luglio 2019 alle 11.09 "James Pawson (U3C)"
> ha scritto:
>
>
> Thanks John,
>
> I shall have
Thanks John,
I shall have a look through that list.
All the best
James
James Pawson
EMC Problem Solver
Unit 3 Compliance
Design for EMC / Pre Compliance / Problem Solving / EMC Testing /
Consultancy / Environmental & Vibration
www.unit3compliance.co.uk
Have you looked at IEC TC9 publications? Go to:
https://www.iec.ch/dyn/www/f?p=103:22:0FSP_ORG_ID:1248
Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK
On 2019-07-19 09:40, James Pawson (U3C) wrote:
Hello experts,
I’m working
Hello experts,
I'm working with a company designing some equipment for both rolling stock
and trackside applications for rail applications.
Information about earthing schemes for this type of equipment seems to be
ill defined. The customer has been given the (vague) requirement that they
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