Please help me to understand the “Marking” of equipment requirements for
systems made up of multiple components. I’m going to cross categories for the
purpose of the examples, so don’t get confused by that.
Example 1: I buy a PC. It comes in a large box. Inside I get a PC tower,
mouse,
I've never understood why some people think that the solution to people not
following the rules can be solved by creating more rules. Studies have shown
the the vast majority of non-compliances are lack of understanding low risk
rules and not anything that would really hurt someone. They put
Doug,
These type of interlock switches are new to me. They are used in industrial
applications where they protect the user from a very hazardous condition.
These switches usually have what is called a Positive Mechanical Action or
Certified Direct Opening mechanism which forces a Normally
: Tuesday, February 05, 2019 4:44 AM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [BULK] [PSES] Economical operator name & postal address on
EEEproducts
Importance: Low
Dear Brian,
Thanks for your useful info! Must the responsible person be in EU/EEA
countries? Other
Scott,
The short answer to your question is, the name and address of the responsible
party for placing a product on the EU market is required to be on the products.
EU documents often refer to the responsible party as the “Manufacturer” even
though the responsible party may not have
What is the Source Document for the Nameplate Voltage, Current, etc. Rating
Nomenclature (if there is one)?
Examples one might find on a typical electronic equipment;
115/230V~ 50/60Hz 8/4A
100-120/220-240V~ 50/60Hz 8/4A
We try to match this information in our User's Manual. However, our
Reference CISPR11/EN55011:2016 version.
If you are an expert at the Radiated Emissions test from 150Khz -30Mhz for
Class A Group 2 equipment, I could really use your help.
I haven't done this test in over 25 years. I refurbished our Active Loop
antenna and placed it 10 meters from the EUT. I
Under the Machinery Directive, the manufacturer must have someone within the EU
who is authorized to compile the Technical File. If that person is in the UK,
I assume you will have to find someone else. Is that correct?
Brian Kunde
Manager • Compliance Engineering
LECO Corp • Compliance
not be practical for all products and
markets but for some this is mandatory. Something to think about.
Good topic.
The Other Brian
From: Charlie Blackham [mailto:char...@sulisconsultants.com]
Sent: Thursday, January 03, 2019 10:04 AM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: IEC 61000-4
Greetings.
Is it a requirement in Canada, or any other country, to which industrial
machines with large AC motors (such as 25hp) must be soft started using a
Frequency Drive/Inverter? If this is true, where do I find this ruling?
Electric Code??
I have heard rumor of this in the past. And
OO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk<http://www.woodjohn.uk>
Rayleigh, Essex UK
On 2018-11-02 20:38, Kunde, Brian wrote:
John,
I love your example of the Power Supply. In this case, a “standard” says one
thing, but the manufacturer did it a different
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] CE non-conformity statistics
A typical technical non-compliance is incorrect marking of power supply data.
Different standards have different requirements, and it's easy to mistakenly
state, for example, the supply current when
Ok, I’ll pile on.
I have never been involved in a market surveillance inspection so I really have
no right to comment, but I am trying to understand what constitutes itself as a
Technical Non-Compliance.
Many of my products get inspected post-sale at our customer sites by
third-party labs or
We use our 8546A receiver every day and love it. It is still one of the best
frequency domain receivers around.
We use AcuCal (recently acquired by Trescal) who has mobile labs that travel
all over the Americas. They back right up to our lab door, we hand carry our
receiver to their 5th
Please send replies directly to me if this is a group violation.
In our Safety lab, we do input current tests. We currently use two handheld
meters; one showing Voltage and the other Current via a current clamp.
We want to replace these two meters with a single piece of test equipment that
The power supply is NRTL certified and the battery is NRTL certified. The rest
of the tablet I assume is limited energy circuit. Does the tablet require NRTL
certification?
Brian Kunde
Manager • Compliance Engineering
LECO Corp • Compliance Testing Center
From: Carl Newton
I have seen many reports from Field Evaluations where the inspector could not
determine if a section was a pass or fail, so it was marked down as a FAIL or
Non-Compliance. Just because they do not have the equipment in the field to
make the determination, they put it down as a Non-Compliance
Our company makes Laboratory Equipment (test and measurement analyzers).
Our company performs a Risk Assessment early in the development stage of all
new products as so suggested by such documents. We generally use the EN ISO
12100. Creating this document highlights the possible sources of
[mailto:ian.mcbur...@allen-heath.com]
Sent: Thursday, April 26, 2018 10:24 AM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: Mains Conducted rf emissions measurements
Hello Brian.
Yes, I have 2 bulkhead mounted filters; one for the screened room & one for the
control room.
However; I t
Ian,
Does your screen room have massive line filters on the AC mains coming in?
This would be a requirement I believe.
Brian
From: McBurney, Ian [mailto:ian.mcbur...@allen-heath.com]
Sent: Thursday, April 26, 2018 9:08 AM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: Mains
Ian,
First, are you sure the noise if coming from your AC Mains? If you are using
line filters, you need to get some kick butt filters that will give you good
attenuation down to at least 10khz.
Second, are you sure the signals you are seeing between 150kHz and 400kHz are
real? Zero in on
I'm picturing a huge knife switch from a Frankenstein movie I saw as a kid.
The Other Brian
From: Richard Nute [mailto:ri...@ieee.org]
Sent: Tuesday, April 03, 2018 11:01 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [BULK] Re: [PSES] Need a switch
Importance: Low
Hi Ken:
I interpret your
ope, a cut-off saw is a 'machine', so the Machinery Directive applies.
This influences which safety standard is permitted to be applied to the product.
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk<http://www.woodjohn.uk>
Rayleigh, Essex UK
On 2018-01-31 18:38,
oes “transportable” mean? I always thought it meant
tools that are used on the move, but I cannot image using a table saw while it
is moving.
Thanks,
The Other Brian
From: John Woodgate [mailto:j...@woodjohn.uk]
Sent: Wednesday, January 31, 2018 2:37 PM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG&
john.uk<http://www.woodjohn.uk>
Rayleigh, Essex UK
On 2018-01-31 18:38, Kunde, Brian wrote:
Most interesting. Thanks.
From: msherma...@comcast.net<mailto:msherma...@comcast.net>
[mailto:msherma...@comcast.net]
Sent: Wednesday, January 31, 2018 1:27 PM
To: Kunde, Brian
Cc: EMC-PSTC
Subject: [BULK]
Most interesting. Thanks.
From: msherma...@comcast.net [mailto:msherma...@comcast.net]
Sent: Wednesday, January 31, 2018 1:27 PM
To: Kunde, Brian
Cc: EMC-PSTC
Subject: [BULK] Re: [PSES] GFCI vs GFPE
Importance: Low
IEC TC 116 in in the process of folding the 60745-1 (hand held motor operated
probably not considered portable (depending on your
definition).
Do you know if there are similar requirements for non-hand-held electric
saws/tools?
Thanks,
The Other Brian
From: msherma...@comcast.net [mailto:msherma...@comcast.net]
Sent: Wednesday, January 31, 2018 12:29 PM
To: Kunde, Brian
Cc
.
Thanks,
Brian
From: John Woodgate [mailto:j...@woodjohn.uk]
Sent: Wednesday, January 31, 2018 11:13 AM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] GFCI vs GFPE
You can rely on the recent post in this thread by Pete Perkins.
John Woodgate OOO-Own Opinions Only
J M
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.woodjohn.uk=02%7C01%7Cted.eckert%40microsoft.com%7C332841906ad44ef66eaa08d5683526de%7Cee3303d7fb734b0c8589bcd847f1c277%7C1%7C0%7C636529499853637893=hM9ZJbor9gxzRIIwUYV0KkogbsHqlWIDv%2BCi2VRAr5I%3D=0
Rayleigh, Essex UK
On 2018-01-30 22:03, Kunde, Brian
I’ve recently come to understand that the 30mA Ground-Fault protectors, often
built into a circuit breaker, is intended to protect the Protective Earth
(Safety Ground) circuit in the case of a short circuit (opening the circuit
before the safety ground could be damaged. It this correct?
Here
It will be difficult for me to ask what I want without insulting California
Instruments (Emetek), so I apologize in advance if I fail. For those of you
who owns a CI CTS Series for doing Harmonic and Flicker emissions testing, you
can sympathize.
Our CTS system is currently running off of a
UL does not have a sense of humor that we are aware of.
TOB
From: Jon Keeble [mailto:j...@wattwatchers.com.au]
Sent: Thursday, December 07, 2017 4:45 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Pilot rating
We are getting a somewhat innovative product through UL at the moment.
So
obtain a 2nd EAC cert from a Russian lab so that this company could resume
their exports to Russia. The big-name labs with global market access groups
that I spoke with are aware of this. This was the status as of mid-summer.
Best regards,
Carl
On 11/29/2017 2:25 PM, Kunde, Brian wrote:
Greetin
Greetings.
I would love to hear your story about dealing with the EAC mark and shipping
products to Russia. Though most all countries have laws, acts, or directives on
the books, most are not enforced across the board, yet focuses primarily on
mass produced consumer electronics, computers,
We just had our metal halide light fixtures replaced with LED fixtures in our
large 10 meter Semi Anechoic Chamber and they are GREAT!!! I have requested
the Make and Model Number information from our Maintenance Department which
I'll pass on when I get it. This is a holiday weekend for us so
dedicated circuits, but that is how the rules read in the NEC 210.23(C). Unless
I’m missing something.
Thanks bunches.
The Other Brian
From: John Woodgate [mailto:j...@woodjohn.uk]
Sent: Wednesday, October 11, 2017 2:57 PM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] NEMA 5-20P
rote:
The NEC (NFPA 70) talks about “continuous currents” and when to apply the
all-too-familiar 125% rule. Canadian Electric Code (CSA part I) has same
requirement. The IEC seems to have avoided it.
Ralph McDiarmid
Product Compliance
Engineering
Solar Business
Schneider Electric
D 604-422-2622
seems to have avoided it.
Ralph McDiarmid
Product Compliance
Engineering
Solar Business
Schneider Electric
D 604-422-2622
From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Monday, October 09, 2017 8:31 AM
To: mailto:EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] NEMA 5-20P with IEC 60320 C13
It is my
dustries, you can find some strange
combinations of plugs and receptacles.
http://www.marinco.com/en/s15-504
Ted Eckert
Microsoft Corporation
The opinions expressed are my own and do not necessarily reflect those of my
employer.
From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Monday, Oc
It is my understanding that according to the US National Electric Code, 15 amp
receptacle are derated to 12 amps max., and 20 amp receptacles are derated to
16 amps.
IEC 60320 C13 connectors are rated 15 amps in North America. Do I derate them
as well or can I draw 15 amps continuous from the
Our company makes an instrument that has uses an RF Isolator Power Amp and
induction coil to heat up a small metal sample for analysis purposes (Lab
Equipment).
By definition within the IEC/EN 55011 standard, this equipment would be
classified as Class A Group 2. (hang in there; it’ll get more
Brian
From: Regan Arndt [mailto:reganar...@gmail.com]
Sent: Friday, September 22, 2017 9:48 AM
To: Kunde, Brian
Cc: EMC-PSTC@listserv.ieee.org
Subject: [BULK] Re: [PSES] Safety critical component part #'s and Agency
approvals
Importance: Low
Thanks Brian. That's great you do this.
Can you share
We address this possible issue in two ways.
1. We list the certification markings that are on Safety Critical
Components on our purchase print as “incoming inspection requirements”. When
parts are received, our IQA department visually verifies that the certification
markings on the
it is better than nothing.
The built in surge suppression in your $3000 computer will easily protect your
$5 power strip. But your computer may not survive more than one hit.
The Other Brian
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: Friday, September 15, 2017 9:10 AM
To: Kunde, Brian
This is slightly off topic but you might find this interesting. People are too
smart for their own good.
When Yanks travel to Europe, they bring along their phone chargers, computer
chargers, notepad chargers, razer chargers, etc., all of which will operate at
either 115Vac or 230Vac these
Have you ever priced out one of these? Ouch!!
The Other Brian
From: Rob Oglesbee [mailto:rogles...@radianresearch.com]
Sent: Monday, August 14, 2017 12:25 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Another benefit of Time Domain EMI receivers
I've had experience with them at a
Greetings.
Sorry if this is a stupid question (I’ve asked more than I’m allowed, I’m
sure), but in Europe, is there 230 volt 3-phase (230 volt line to line)? I
thought 230 volt single phase was derived from 380V 3-phase (230V from Line to
Neutral).
I see a 230V 3-phase saw with a CE marking
I have a Classic 1948 John Deere "M" tractor. I cannot measure the battery
voltage (to see if the generator is charging the battery) while the engine is
running because the emissions from the ignition is so bad it causes by DMM to
malfunction.
The Other Brian
From: Nyffenegger, Dave
[mailto:char...@sulisconsultants.com]
Sent: Tuesday, June 20, 2017 4:47 PM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] CE Compliance [General Use]
>“but can lead to”, means it does not have to lead to, otherwise it would say,
>“but must lead to”.
I think it would say “Shal
Because terminology gets tossed around by different organizations, standards,
directives, etc., without clear definition, let me see if I understand this
correctly.
First of all, the FCC statement identifies a type of product; in this case
"Test Equipment". This can be anything that tests or
the
first minute of operation. Crazy man.
Thanks for all the good information. Most helpful and informative discussion.
The Other Brian
From: Doug Powell [mailto:doug...@gmail.com]
Sent: Tuesday, April 11, 2017 2:10 PM
To: Kunde, Brian
Cc: EMC-PSTC
Subject: Re: [PSES] Voltage Rating vs Voltage
Is something like this allowed?
100-115-120/208-220-230-240
Will a ±10% tolerance always be assumed? If your tolerance was something
different, such as -15%/+10%, does this information have to be on the device or
is the manual good enough?
The Other Brian
-Original Message-
From:
t: Tuesday, April 04, 2017 3:09 PM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] E-Box Layout on Factory Machines
The preceding may not have completely addressed the question. You are probably
looking to identify what standards to apply while designing the product before
at type of construction (aside from tradition). It's like asking why every
facilities engineer has a large keyring, a pocket protector containing no less
than three writing instruments, and a AA mini Maglite on their belt.
On Tue, Apr 4, 2017 at 8:54 AM, Kunde, Brian <brian_ku...@lecotc.com> wro
I notice that most industrial factory machinery is designed with a large metal
electronic box with a hinged door and some kind of keyed lock. Inside the
components are DIN mounted and the wiring is all dressed very neatly in these
gray plastic cable runs with snap-on lids. Every wire is labeled
I’ve said this before, but laboratory equipment is the Redheaded Stepchild of
Regulatory Compliance. It’s like the powers-to-be didn’t know what to do with
us so the latest move was to toss us in the mix with Industrial Machinery. But
the MD is not a good marriage. Our users are not the same.
...@globalnorm.de [mailto:loerzer_mob...@globalnorm.de]
Sent: Thursday, March 30, 2017 4:23 PM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: AW: [PSES] MD vs LVD for Laboratory Equipment
Second comment: on 8th of May, 2017 I have a meeting with the responsible
market surveillance authority
Sorry to say, this issue has once again reared its ugly head. I appreciate any
and all input.
History: For many many years, laboratory equipment fell under the Low Voltage
Directive (LVD), even products with moving parts. It was specifically excluded
from the Machinery Directive (MD). The
Greetings experts.
This question applies to both North America rules (NEC) keeping in mind the
rest of the world including Europe BUT my example will be for a 115Vac 60hz
device.
My example product is used in the Workplace but not typically in an industrial
environment (if that matters). It's
A quick question.
A manufacturer established outside the EU placing product on the market in the
EU can but does not have to have an authorized representative within the EU.?
Is this a correct statement?
AND;
The Machinery Directive requires the name and address of the person authorized
to
Antenna Masts, RF Tables, and many other such products used for EMC Testing is
commonly made from that Green Structural Fiberglass Square Tubing. I can find
sources to buy the tubing itself (I'm using the 2 inch OD material with 1/4
inch thick walls) but I cannot find any company that makes
Amund,
I don't think you can apply Exemptions to the RoHS directive across the
definition of "Safety Critical Products" unless your product clearly falls
within the exempt equipment called out in Article 2 paragraph 4. Parts of your
product or components can fall under numerous exemptions
Doug,
Sounds like there is a piece of the puzzle missing.
For instance, the EN 61326-1 calls out Surge Immunity according to IEC61000-4-5
Level 3. The IEC 61000-4-5 calls out Level 3 to be 2KV. So unless your first
standard calls out the Basic standard then you would not know what “Level 3 “
Why Re-invent the wheel? Why not just buy an ESD Gun/Generator and be done
with it?
The Other Brian
From: Li Di [mailto:li...@conorthtech.com]
Sent: Tuesday, December 20, 2016 9:33 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Questions on ESD testing for ECSS-E-ST-20-07C-Rev17
Hi Dear.
Experts,
I have seen Interlock circuits using "interlock switches" (as specified by
their manufacture), on doors, panels, and guards with hazards behind them that
were NOT "Positive Mechanical Action" (PMA) switches. (Also known as Direct
Contact, Forced Break, Direct opening action, Positive
Greetings Experts.
I'm really really really sorry to ask this question, but I must know without a
doubt of how the EU law interprets "Placing on the Market". Yes, I have read
many documents, websites, and guides. I thought I had a good understanding of
this but I am not confident to the point
in Europe
than North America; but I may be wrong.
Thanks again for the ed-u-ma-cation.
The Other Brian
-Original Message-
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: Friday, November 18, 2016 9:49 AM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] Internal poi
This thread has tickled my interest. I have never heard of the term IPC used in
this way nor do I understand the definition. Can someone provide context and
give an example of how it would be used? When the definition refers to
"network", is this the AC Mains network? And why is the Point of
Three things to keep in mind with the 61000-4-6 Conducted Immunity test when
using clamps;
1. There two types of clamps; The Current Clamp which must be grounded
via the BNC connector and a short strap to the Reference Ground Plane, and The
EM clamp which most commercially available
. This has been our
company's practice for over 20 years but I wasn't sure where the concern came
from. Now I have a better understanding.
Thanks again.
The Other Brian
From: Richard Nute [mailto:ri...@ieee.org]
Sent: Friday, November 04, 2016 2:59 PM
To: Kunde, Brian; EMC-PSTC
I know what you mean. In those aluminum case flashlights (Maglite type) when
the batteries go bad not only do they leak but Puff Up (enlarge in size). Then
it becomes nearly impossible to remove the batteries without destroying the
entire flashlight. The flashlights with the AA size batteries
Greetings Experts.
If we send 230Vrms out of a product to power an external device through an IEC
Outlet connector and we need to provide Overcurrent Protection for this port
internal to our device, can I use two fuses or do I have to use a double pole
circuit breaker?
Since our product can
John,
In reference to what? The name and address displayed on the EE?, the
responsible party within the EU?, information appearing on the DoC?
I've always understood that an Authorized Representative within the EU was
required for manufacturers outside the EU; and I thought this was a
be nice if the manufacturer would provide information on how to
properly protect this device. Any suggestions?
Thanks,
Brian
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: Monday, October 31, 2016 12:54 PM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] Low current
Greeting Experts.
I often run into issues with safety inspectors during Field Evaluations
regarding overcurrent protection of small transformers that are not thermally
protected.
These small transformers can draw such small amounts of current on both the
primary and secondary, that finding a
: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Monday, September 26, 2016 7:39 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Using 60hz motors in 50hz countries
Dear experts,
Can AC brushless motors (in this case 230V~ 3-phase 3hp motors) that are rated
"60HZ" be used in prod
Dear experts,
Can AC brushless motors (in this case 230V~ 3-phase 3hp motors) that are rated
"60HZ" be used in products going to countries that have 50HZ power? I believe
the motors will run a little slower which will not affect the function of the
product, but is there a safety issue with
This is a question that goes back to the beginning of time; or at least the 35
years I’ve been on the job. And I’ve never heard a good reason for either side
of the argument. You don’t want unqualified people trying to wire a Plug onto a
power cord and you don’t want to ship a plug that will
I seek advice and opinions from fellow safety minded people.
Our typical product has a metal chassis which is constructed as a Fire
Enclosure (laboratory equipment 61010-1). On the back is a cutout for a cooling
fan/blower mounted in the cutout. The fan is 24Vdc, certified by several safety
Boric Acid is also very deadly to bees. In fact, bees can take the powder back
to the hive in which it can kill off in just a few days. Most anything that is
going to kill an ant is also going to kill bees and other insects. That’s why
they prefer you use ant bait in little cans with holes in
I believe it is Boric acid you want; not Borax, which is a salt of Boric Acid.
I learned years ago that there are two types of ants; some like sweet, some
like fat. So I made two different mixtures. One with boric acid and powdered
sugar and the other with boric acid and bacon grease. I put the
I assumed it had something to do with the old Wall Warts that was basically a
transformer. In an overload condition, these transformers can reach
temperatures exceeding 100ºC. You don’t want the plastic case to soften, warp,
or open up and expose hazardous voltages, or worst.
The Other Brian
Ken [mailto:ibm...@gmail.com]
Sent: Wednesday, June 29, 2016 11:32 AM
To: Kunde, Brian
Cc: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [BULK] Re: [PSES] Fire requirements in standards
Importance: Low
Hi Brian; Do you mean specifically the changes to the fire enclosure
requirements or the overall
This subject is very interesting to me. If I wanted to know more, is getting a
copy of 62368-1 worth reading or will I have to wait for the proposed changes
to 60950-1 to come out, or what do you recommend? Are the proposed changes
quite large or can they be summarized? What are the weak areas
When I was in High School Shop Class, there were electrical boxes hanging from
cords down from the ceiling all around the room with large red buttons.
Pressing any of these buttons would turn power off to every piece of machinery
and to all work benches in the room (lights would stay on). That
-Original Message-
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: Friday, June 24, 2016 5:39 PM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] FCC Part 15 vs 18
How different are the requirements? Can you economically comply with both, so
you can stop worrying
This has always confused me. My company makes Laboratory Equipment (Analytical
Test Equipment) which we have always categorized as ISM Equipment (Industrial,
Scientific, Medical). But both FCC Part 15 and 18 references ISM equipment.
By nature of what our products are or the category of
Rich,
Can you test to determine the rating of a conductor, connector, contact, etc.
within our application?
I once had a connector we wanted to use in a fairly high current application.
The connector manufacture didn't specify a total current rating on the
connector but a rating on a single
Try the US National Electric Code table 310-17 for single conductor insulated
wire in free air at 30ºC ambient (hook up wire). Keep in mind that you have to
de-rate the values in this chart for bundling (NEC table 310-15-(b)(2)(a)) and
temperatures (NEC table 690-31(c))above 30ºC.
The Other
Can anyone give me a label source in North America for the ACMA Regulatory
Compliance Mark "RCM" label? I assumed by now the new symbol/label would be a
common thing and I could buy it over the counter. Our normal sources for such
labels want to do it as a custom label at 10 times the cost.
Ralph,
This might be true but that is not how we saw it way back when. The 240VA
"Energy Hazard" was not a consideration for the protection against Fire but a
limit value for accessible parts by the User. We still today consider
accessible circuits, regardless of the voltage, to be "Hazardous
Back in my computer days, IEC 950 clause 1.2.8.7 defined a "Hazardous Energy
Level" as "A stored energy level of 20 J or more, or an available continuous
power level of 240 VA or more, at a potential of 2 V or more."
Ever since, we refer to 240VA or more as an "Energy Hazard" and take that into
I have a EU RoHS compliant product but it contains a component that is RoHS
Compliant under one of the Exemptions found in Annex III of 2011/65/EU. Am I
required to Declare this Exemption somehow to the public, on the DoC, in our
Manual, or only document this information in our Technical File?
Thanks to everyone who replied.
The Other Brian
From: Michael Derby [mailto:micha...@acbcert.com]
Sent: Thursday, May 05, 2016 10:06 AM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] NFC Near Field Communication Devices
Hi Brian,
Which geographical region are you interested
What can you tell a newb like me about NFC? It operates in the ISM frequency
of 13.56Mhz. If we incorporate it into a product, does it require testing by a
certified or accredited lab? It is globally accepted without licenses and
certifications?
Thanks,
The Other Brian
From: Cortland Richmond [mailto:k...@earthlink.net]
Sent: Wednesday, March 16, 2016 3:24 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Pre-Amp mounted to antenna
On 3/16/2016 1:16 PM, Kunde, Brian wrote:
> We currently have a 22dB pre-amp which is fine for class A levels but
> a close to
[mailto:charles.gra...@echostar.com]
Sent: Wednesday, March 16, 2016 12:47 PM
To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: Pre-Amp mounted to antenna
What antenna are you using? The gain you are seeking seems a little low..
Best Regards
Charles Grasso
Compliance Engineer
Echostar Communications
(w
Greetings.
I'm looking for a low noise Pre-Amp for Radiated Emissions 30Mhz to 1Ghz (or
higher) with a gain of 20-30dB; but here's the catch. I want it to mount
directly to the "N" connector on my BiLog Antenna and be powered by a
downstream Power Supply box that sends DC down the coax. Just
Keep this in mind. The US NEC allows power cords to be made from 18AWG wire
even though they can be plugged into a 20 amp circuit.
Protective bonding Test at 40 amps for 4 minutes will melt the insulation of
18AWG wire.
Even internal 18AWG hookup wire used as the Protective bonding conductor
A quick trip in the "Way Back" machine brings me back to the early PC days. To
get parallel printers to pass the FCC class B requirements we had to use a very
expensive cable purchased directly from IBM which had double shielded cable and
heavy metal back shells. The cost was something like $50
1 - 100 of 424 matches
Mail list logo
