Hello Experts,
I have a client who is seeking a consultant to review some equipment for DC
arc flash hazards. Any takers or references?
Cheers,
Gary Tornquist
-
This message is from the IEEE Product Safety Engineering
he request and have a code expert that can
provide the consultation, please let me know.
Cheers,
Gary Tornquist
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discussion list. To post a message t
Hi experts,
I’m having trouble finding a test lab with an environmental chamber large
enough to do temperature cycling on a heat exchanger measuring 3.4m long, 0.7m
tall, and 0.3m wide. Anybody know of one?
cheers,
Gary Tornquist
be appreciated.
Cheers,
Gary Tornquist
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bcontractors could do Field
Evaluations. Am I the only one in the dark?
Cheers,
Gary Tornquist
From: Richard Nute
Sent: Thursday, February 23, 2023 10:01 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Non-NRTL Field Inspection Service Provider in the Michigan
/ Mi
, amusement parks and resorts to
get people short distances.
Not for public roads as far as I can tell.
See an example here:
https://www.tdiproductionsolutions.com/portfolio/delga/
So would they fall under the Department of Transportation? OSHA? Or something
else?
Cheers,
Gary
ed. If you have received an email message in error, please delete the
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-Original Message-----
From: Gary Tornquist <05big...@gmail.com>
Sent: Thursday, May 19, 2022 11:53 PM
To: EMC-PSTC@LISTSERV.IEEE.OR
Lamp category (OOLV) and Sign
Conversions, Retrofit (UYWU).
Can retrofit kits be listed for IT products examined to UL62368? Does it help
if the installation is only done by trained personnel?
Any advice is appreciated.
Cheers,
Gary Tornquist
Product Safety Consu
Hi Kim,
Not quite official, but take a look at this article equivalent for UK
<https://www.conformance.co.uk/2-uncategorised/354-brexit-and-authorised-representatives-in-the-uk>
post-Brexit. At the end it addresses your question.
Cheers,
Gary Tornquist
From: Kim Boll
ay lead to unrealistic and
non-transparent results.
Cheers,
Gary Tornquist
From: Richard Nute
Sent: Sunday, March 13, 2022 6:59 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Medical Device Leakage Current Production Line Test
Setup
Comments by Savino Macias and Boštjan Glavič trig
hicle.
BTW - I do see requirements around fuel/fuel tank safety, but that isn't
what I'm looking for either.
Cheers and thanks for your consideration,
Gary Tornquist
Product Safety Consultants, Inc.
-
This message is f
welcome advice – this is the first time I’ve seen such proposed construction
and I don’t know a standard such as 62368 to mention it.
Cheers,
Gary Tornquist
Product Safety Consultants
Opinions expressed are my own, not of my employer or client
Committees with some success (thanks Pete P. for the
suggestion) but other advice is welcome.
Cheers,
Gary Tornquist
Sr. Consultant
Your Outsourced Compliance Department
1618 236th Ave NE
Sammamish, WA 98074
(425) 279-3996
<http://www.productsafetyinc.com/> http
Another thin material to consider is Nomex. Good fire retardard properties,
but likely thicker and more expensive than Kapton tape.
Cheers,
Gary Tornquist
The opinions expressed are my own.
From: Ted Eckert <07cf6ebeab9d-dmarc-requ...@ieee.org>
Sent: Friday, October 8, 2021 6
countries in the same box. The
intent is that the customer uses the cord appropriate to his country and
disposes of the rest. Customs of some countries may object, but others are OK
with this practice.
Do you know of countries where this is OK? And others where is isn’t?
Cheers,
Gary
lower than eye level?
Cheers,
Gary Tornquist
Microsoft Corp
Opinions are mine, not necessarily that of my employer.
From: John Woodgate [mailto:j...@woodjohn.uk]
Sent: Sunday, January 21, 2018 11:22 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Automatic measurement with Class 2 las
For some jurisdictions it simplifies environmental compliance to ensure
prototypes are returned to the manufacturer for proper disposal and recycling.
Cheers,
Gary Tornquist
Microsoft Corp.
The opinions expressed are my own and do not necessarily reflect those of my
employer.
From: Ted Eckert
Back to Brian's mail about the basis for the 1500A interrupt rating, my
assumption has been that it stems from some other common requirement or
application that made this the next step up. Presumably it isn't economical to
have a bunch of different common interrupt ratings.
Ch
a7c37c3%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636426450985653433&sdata=dVFqaU1N3vDIfz5hLh%2FqfBJ5RwZGmzVMj6l30aMHhfs%3D&reserved=0>
may simulate (though not as well as a cigarette) is ignition from a candle.
Gary Tornquist
Microsoft Corp.
Opinions are my own, not those of my employer.
From: IBM Ken [mailt
As others have said a fixed number of minutes to wait, doesn’t make sense. How
long it takes to reach thermal equilibrium to a given number of degrees depends
on the thermal time constant(s) of the system under test and the size of the
thermal step imposed on the system. I had some success est
Chamber pots!
One has to wait years to legitimately reference chamber pots in conversation :)
Cheers,
Gary Tornquist
-Original Message-
From: John Allen [mailto:john_e_al...@blueyonder.co.uk]
Sent: Thursday, April 2, 2015 12:12 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] SV
Hi Rich,
You mention the failure modes of a mains frequency transformer. I'd expect the
same applies to switch mode high frequency transformer, or is there something
else to consider?
A good article! - I just skimmed it :).
Cheers,
Gary Tornquist
Microsoft
From: Richard Nute [mail
Hi Rich,
I agree on the difficulty of foreseeing everything customers do. However many
warnings such as the ones I mentioned have, I believe, originated from reports
of what customers have actually done.
Cheers,
Gary Tornquist
Opinions are mine, not of Microsoft Corp.
From: Richard Nute
microwave oven.” It does not
seem reasonable to install physical safeguards in consumer products against all
similar misuse, so using the signal words seems, well “conventional”.
Cheers,
Gary Tornquist
Opinions are mine, not of Microsoft Corp.
From: Richard Nute [mailto:ri...@ieee.org]
Sent
The power supply PCB’s I see have holes or slots cut in them between the pointy
conductors. The arc occurs across the air gap. This avoids the carbon
tracking on the PCB condition raised below.
Gary T.
From: Doug Powell [mailto:doug...@gmail.com]
Sent: Friday, September 6, 2013 9:33 AM
To: EM
I often see spark gaps on the mains side of AC-DC power supplies PCBs. I
consider it a best practice.
Gary Tornquist
Director of Product Safety
Microsoft Corp
From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Friday, September 6, 2013 8:56 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject
itial samples to allow this
and other variation in production.
In consumer electronics this issue becomes less prevalent as product life times
are getting shorter and shorter.
Gary Tornquist
Director of Product Safety
MICROSOFT
gary...@microsoft.com<mailto:gary...@microsoft.com>
Own Opinion
I've understood from the USB 2.0 spec quoted below the maximum current provided
should be no more than 5A. Has this changed?
I've also noted that it isn't hard to find hubs that allow more than 5A to
individual ports.
Gary Tornquist
Director of Product Safety
MICROSOFT CON
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