In message 007101cd7f30$6f3eb230$4dbc1690$@cox.net, dated Mon, 20 Aug
2012, Ed Price edpr...@cox.net writes:
All this discussion would be moot if we had true peak reading broadband
field strength sensors, and if the immunity standards were all
referenced in terms of peak applied field
In message 00ba01cd7f49$5053c5e0$f0fb51a0$@cox.net, dated Mon, 20 Aug
2012, Ed Price edpr...@cox.net writes:
Thus, I often used modulations beyond the popular 1 kHz, 100 Hz, 1 Hz,
1 uS, 50% pulses and AM stuff. (Which is all probably pretty boring to
the commercial and EN guys on this list,
Hi and thanks for all the insightful emails. The way we perform the test
in-house is...
unmodulated frequency set level set from cal (instant application, no ramp)
apply modulation dwell time unmodulated next freq
I think we are all agreed that different test methods can result in
Hi, Brent,
From the work I did in the NW I'd say they need to add 16 2/3 Hz to it;
the papers on AED susceptibility to railway power fields were a little
scary -- for folks in train stations, anyway.
Cheers,
Cortland Richmond
On 8/21/2012 0003, Brent G DeWitt wrote:
Re: [PSES] 61000-4-3:
I am looking for suggestions for commercial (UL, CSA, etc) standards
that might apply to ITE RF rack mounted equipment, antennas, all
mounted on a flatbed trailer. As mentioned most of the hardware is ITE
with the more typical safety standards applied. Once those products get
hard mounted to a
James,
We run primarily two different types of Radiated Immunity scans depending on
the desires of our customer.
1.Unmodulated frequency set level from forward power apply modulation
dwell time unmodulate next freq.
2.Setup Sig Gen with Modulation Turned On Always Set
Ed-
I have seen stuff like this. My company makes protective relays that
control the power system. That means that these relays work with signals
at 60 Hz (or 50 Hz for many parts of the world outside of North America).
The test standards call for the use of 1 kHz amplitude modulation. The
Ed,
You have a good handle on this topic and have pointed out several of the
assumptions that are required to be made in this type of testing to make it
reasonable to be performed with reasonable equipment by reasonable people.
Non-linearity and not knowing exactly what your equipment is doing
I have not do not have experience with rolling-stock ITE. But have done
power converters for trailer-mounted ITE systems for semi-permanent static
installs.
NEC would apply if the intended end-use is a static install at fixed site.
NFPA, so far, has only published stuff for EVs and HEVs. In
Could a self-declaration 'system' function well in North America without
public safety reduction? For just discrete, narrow classes of goods?
You would probably see an initial increase in non-compliant products. However,
this being the U.S., that would correspond to an increase in lawsuits
To add to the discussion, I believe that in 2009, the Province of Ontario,
Canada intended to initiate a program forcing manufacturing electrical products
to register with the Province, for a yearly fee. This was in addition to the
third-party approvals held by most products. The program seemed
Brian –
When ice storms took out the power lines in the Montreal metro area, a
number of US generator manufacturers donated use of truck scale generators
to get locals up on at least a subsistence level of power. These trucks
were denied entry into Canada because they didn't bear CSA marks,
The working documents providing background info on the registration scheme that
were posted on the Ontario website, touched on the plan and it's relation as a
source of revenue to fund the activities if I recall correctly.
There has been activity at the federal level to address consumer
In message 4532b7d6b39370164f98f16a9a6a3...@mail.gmail.com, dated Tue,
21 Aug 2012, Peter Tarver ptar...@enphaseenergy.com writes:
When ice storms took out the power lines in the Montreal metro area, a
number of US generator manufacturers donated use of truck scale
generators to get locals up
All,
This is pretty interesting, since CBSA (Canadian Border Services Agency,
formerly Customs), does not have the authority to inspect for regulatory
compliance. If this is true, the CBSA Agents were acting well outside their
authority.
Only the AHJ, in this case Hydro Québec, has the
Canada excels at domestic ice and snow production and doesn't need to import
them. Domestic prices are already so low that Canada doesn't have to impose
excessive tariffs or regulations on imported ice and snow.
Ted Eckert
Compliance Engineer
Microsoft Corporation
ted.eck...@microsoft.com
The
I heard that Canada sneaks excess ice into the USA by floating it across the
Great Lakes. And as for their snow, well, the border is completely
unprotected.
Ed Price
El Cajon, CA
USA
The opinions expressed are my own and do not necessarily reflect those of
the other voices in my head.
Must power cables imported and sold in Europe have a CE mark and
manufacturer's name address starting 3 January 2013 in accordance with
the recast RoHS Directive 2011/65/EU? Similarly, must the power cable
have its own declaration of conformity (DOC)?
It appears that AC power cables shipped
Would this be for molded power cords only, or does it include assembled
power cords, for Pluggable type B equipment, for example, made up of
discrete connectors typically attached to cord via screw terminals and
strain relief glands?
-Ken
On Tue, Aug 21, 2012 at 7:50 PM, Monrad Monsen
Rick PSNet,
This has been a topic of discussion in the US/TAG TC108 sessions
recently.
In addition to the usual ITE requirements, there are many Code
issues that apply to such a trailer load of equipment which will be directly
powered.
Perhaps one of the members who
Is it only for AC power cable?
Thanks and Regards
Mathan
From: IBM Ken [mailto:ibm...@gmail.com]
Sent: Wednesday, August 22, 2012 9:04 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] CE Marking of Power Cables
Would this be for molded power cords only, or does it include assembled power
21 matches
Mail list logo
