Re: [PSES] NRTL label correction process?

Hi Adam; Is the product small/light enough that it could be returned to the factory for relabelling? What exactly is wrong with the labels? You mentioned the ratings are correct. Is the NRTL logo or file number incorrect? Some parts of the label may be changed without a field marking exercise,

Re: [PSES] Lithium Button Cell Battery - NRTL markings

Hi John; Is this battery used in a higher-level product? Is your problem that a certifying agency won't complete the certification, or that the end product is already certified, but failing FUS/ inspections at the manufacturer because they can't verify the battery is UR? PS: When you say UR,

Re: [PSES] Machine status visual Indicators

Hi Steve! I don't have a copy of that standard but I'm picturing the red/yellow/green towers on things like manufacturing floor hipot testers. Have you considered the colorblind user who might not be able to discern yellow from red, but on a 'stoplight'-like tower, can at least use the

Re: [PSES] Low Voltage connectors called out on CCL

Hi Ryan; Could the connectors be considered as filling holes in the fire enclosure (or making up part of the enclosure)? -Ken A On Thu, Apr 6, 2023 at 2:09 PM Ryan Jazz wrote: > Hello Members, > > We have an audio amplifier being evaluated by a local NRTL to UL 62368-1 3 > rd Edition. > > The

Re: [PSES] Using E-Stop in a Non-Emergency Task

>From a practical standpoint, some designs use an EPO/EMO in series with a motor or other high current device potentially creating a hazard (laser, linear actuator, etc). I can see why you would not want to use an EPO in this manner (breaking significant current on a regular basis could cause

Re: [PSES] Position available

Hello all: There is a position open for a Product Safety Engineer at IBM in Poughkeepsie NY. This is a contract-to-permanent position. Applicants must have excellent written and verbal communication skills, organizational skills, and hands-on/general lab skills. An ideal candidate would be a

Re: [PSES] Job opening

Hello all: There is a position open for a Product Safety Engineer at IBM in Poughkeepsie NY. This is a contract-to-permanent position. Applicants must have excellent written and verbal communication skills, organizational skills, and hands-on/general lab skills. An ideal candidate would be a

Re: [PSES] Position available

Hello all: There is a position open for a Product Safety Engineer at IBM in Poughkeepsie NY. This is a contract-to-permanent position. Applicants must have excellent written and verbal communication skills, organizational skills, and hands-on/general lab skills. An ideal candidate would be a

[PSES] Position available

Hello all: There is a position open for a Product Safety Engineer at IBM in Poughkeepsie NY. This is a contract-to-permanent position. Applicants must have excellent written and verbal communication skills, organizational skills, and hands-on/general lab skills. An ideal candidate would be a

[PSES] Position available

Hi all; There is a position open for a Product Safety Engineer in Poughkeepsie NY at IBM. This is a contract-to-permanent position. Applicants must be able to work in Poughkeepsie NY and have excellent written and verbal communication skills, organizational skills, and hands-on/general lab

Re: [PSES] Automotive EMC training

I did not ken this bit of trivia -Yet another Ken On Wed, Jan 27, 2021 at 5:13 AM James Pawson (U3C) < ja...@unit3compliance.co.uk> wrote: > > > On the subject of Kens – in the Scottish dialect, to “ken” is to > understand or know something as in “oh aye I ken tha’ EMC problem” > > > > So

Re: [PSES] NFPA Codes, law or not?

The NFPA is acutely aware of this opinion and considers it an existential crisis. They have been sending out communications for years to their membership making the case that NFPA codes should not be free and the fees paid for them go directly towards improving safety. Just one example:

Re: [PSES] Question regarding use of un certified radios.

Hi Charles! For a US audience at least, this sounds like a conflation of two disparate concepts: 1) Radios offered for commercial sale generally require type acceptance but Amateur radio operators can use equipment which is not type-accepted (ie homebrewed) 2) There are certain services which are

Re: [PSES] Low power FM or Am transmitter

Part 15 provides for AM Broadcast band 'micropower' transmissions as well, though it uses final input power and antenna size restriction (as opposed to field strength, as in FM BCB). There are different requirements for carrier-current and 'leaky coax' installations, and IIRC, schools have

Re: [PSES] Ground copper fill on signal layer on multilayer PCB

Hi Amund! Have you also considered edge-plating? Are you trying to reduce radiated noise outside your product, or cross-talk within the product (or both)? On Tue, Feb 18, 2020 at 3:03 AM Amund Westin wrote: > Between two solid ground planes, we have a signal layer, routing high > speed

Re: [PSES] Capacitor Friday question

Hi Doug! Reforming capacitors is definitely a thing but it sounds like your skepticism comes from the allegation that capacitors can reform themselves in-circuit. I think this is also 'a thing', though probably not recommended in the way shown in the video (dumping full line voltage across the

Re: [PSES] Safety lab basics

Hi David! I think you have to start by going through the Standards, picking out the applicable tests that have to be performed on your products, and then determining which pieces of test equipment you'll need to perform those tests. Don't forget to consider the minimum accuracies required in

Re: [PSES] FCC regulatory statements

Hi Doug- Are you referring to CONELRAD which mandated that all transmitters go off the air (except for certain 640 and 1240hz MW broadcast stations which rotated to confuse enemy RDF) in the event of a Soviet attack on the US? https://en.wikipedia.org/wiki/CONELRAD -Ken A On Thu, Oct 31,

Re: [PSES] Applicable safety standard ITE equipment used on a factory floor?

Hi Joe! 60950-1 is the standard for Safety of Information Technology Equipment, but the presumption of conformity of this standard is going away in the EU relatively soon. It will be replaced by 62368-1, which is a standard that combines the product scopes of information technology equipment and

Re: [PSES] Seeking clean copy of a great EMC Design Tips

> > Best wishes > John Woodgate OOO-Own Opinions Only > J M Woodgate and Associates www.woodjohn.uk > Rayleigh, Essex UK > > On 2019-07-29 19:33, IBM Ken wrote: > > Hi Charles! > > I was able to get a copy but it looks like the graphics are exhibiting the

Re: [PSES] Seeking clean copy of a great EMC Design Tips

Hi Charles! I'll reach out to Bruce and see if he has it. -Ken A. On Tue, Jul 16, 2019 at 7:23 PM Grasso, Charles wrote: > Hi all, > > > > I have a great design tips article written by Bruce Archambeault in 2009 . > Its title is High Speed Traces close to the > Edge of a Reference plane. The

Re: [PSES] Ground on ship

Ultimately if the on-board AC power generation is connected to the metal structure of the ship, then I'd think it is the same as on land, except the ship hull superstructure is the 'ground'. In fact, you might have a 'better' ground on a ship since the metal structure of the ship is exposed in

Re: [PSES] Tilt stability and CoG test lab

Hi Frank! I did a quick search; I assume you already checked with UL (Fremont, SF, San Jose), MET (Santa Clara), TUV-Sud (Fremont), TUV_Rhineland (Pleasanton), Intertek (Menlo Park), Bureau Veritas (Sunnyvale), NTS (Dynamics test lab in Newark https://www.nts.com/location/newark-ca/) and BACLC

Re: [PSES] Labeling material recognition to UL 969

specific requirement of UL 969 when the standard > doesn’t require that. I don’t have an issue with the labels being in the > critical component list. I have always put them in. > > > > Thanks > > -Dave > > > > *From:* IBM Ken [mailto:ibm...@gmail.com] > *Sent

Re: [PSES] Labeling material recognition to UL 969

Hi Dave! Is your issue with the UL 969 requirement? Or being forced to list the label in your report's List of Critical Components? (Or both?) I have kind of the opposite problem- I don't have an issue with using UL 969 label stock and listing it in the List of Critical Components. The NRTLs

Re: [PSES] Source for Nameplate Rating Nomenclature

To pile on to Brian's question, is there guidance on how to indicate Delta or Wye connection types on a label (that are universally recognizable)? I think using "3W +PE" or "4W +PE" might not be descriptive in all cases, especially if your equipment connects to fewer than three phases of a

Re: [PSES] Making 50 Hz power

If anyone has to comply with CTL OP-110 (now OD-5010), it's a lot easier with an agile power supply (vs motor-generator or other source) On Fri, Sep 7, 2018 at 3:55 PM, Nyffenegger, Dave < dave.nyffeneg...@bhemail.com> wrote: > I use a 160kVA 3-phase 208V frequency inverter with 50/60Hz output

Re: [PSES] Making 50 Hz power

California Instruments or Pacific Power agile power supplies. 480VAC 60hz input, variable output. If >250V l-l is needed, add a step-up transformer to the output. Pacific Power 3060MS cabinets can be paralleled to significant output levels. I assembled a lab with about half a megawatt of

Re: [PSES] hot laptop

Aren't we supposed to call them "notebook" computers now, so it can be claimed they're not intended for use on a lap? For what it's worth, I've measured up to 140F on the surface of my computer... On Thu, Aug 16, 2018 at 2:47 PM, Nyffenegger, Dave < dave.nyffeneg...@bhemail.com> wrote: > That’s

Re: [PSES] IATA/ICAO and U 83.3 rules

Hi Doug; I believe UN 83.3 is a test specification and doesn't prescribe rules about shipment. I assume the airlines don't really care about inadvertent activation (assuming the heat generated will be reasonably low and no active cooling is required) but they would just insist that the

Re: [PSES] Temp rise measurement

Hi Scott- very good questions. I have never used the change-of-resistance method. I have always been able to get thermocouples in the windings (it can change the winding shape slightly but if you use very thin thermocouples and the motor size is reasonably large the overall effect is

Re: [PSES] Was there ever a comparison between IEC 60950-1 and IEC 62368-1 (current edition preferable)? And any rationale for any of the changes

Hi Leo! ECMA released a Technical Report (TR-106) in February 2013, so be forewarned that it only compares IEC60950-1, 2nd ed (2005) to the *1st* (2010) edition of 62368-1. A significant number of clauses were moved or renumbered between 1st and 2nd edition (enough that it made it difficult to

Re: [PSES] IEC 62368-1 compliance for Equipment w Two AC Entries

Hi Rich- I think the OP was asking more about how far apart two Mains inlets could be while still being covered under the same "remove all linecords" warning label (not electrical/breakdown spacing). Robert: You are probably OK as long as there are no service positions from which you can't see

Re: [PSES] NEMA 5-20P with IEC 60320 C13

Is it not also true that you don't have to follow the derating if you are using a single-outlet circuit (ie the breaker only supplies one single outlet)? I thought I remembered that being the case, but I can't quote chapter and verse. To add to the list of weird (yet NRTL marked) cables; what

Re: [PSES] FAA Draft Free flame test

And I don't even think it would work, at least not for very long- Don't cigarettes now have to self-extinguish? On Tue, Oct 3, 2017 at 11:28 AM, Doug Powell wrote: > I thought the forum may find this interesting. > > DOT/FAA/AR-00/12 AIRCRAFT MATERIALS FIRE TEST HANDBOOK ( >

Re: [PSES] Safety critical component part #'s and Agency approvals

I have run into this a lot: I don't have any specific example part numbers saved, but often I will be given a datasheet that claims certification with a certain NRTL standard but I can't validate it online. When asked, the manufacturer either says they dropped that certification, or it applied

Re: [PSES] Routine Test 60950-1, 62368-1

; The hipot test is also done with voltage levels which tests the solid > insulation and not the clearances. > > Best regards > Kurt Beneder > > > On Sun, Sep 3, 2017 at 6:10 PM, IBM Ken <ibm...@gmail.com> wrote: > >> Hi Kurt! >> At the system (end product level)

Re: [PSES] Routine Test 60950-1, 62368-1

Hi Kurt! At the system (end product level); -Do you add a PDU and plug on the manufacturing line and plug all the modules into it? -Do you have small screws, wires, etc which are used to assemble the end product which might fall into the product? -Do you have any opportunity for

Re: [PSES] Bureau of Indian Standards (BIS)

Be prepared for lots of frustration. Assuming your product is not HSE (Highly Specialized Equipment) you will have to get BIS registration for your product. This involves (re)testing in India. Some familiar NRTLs can do the testing, but it must be in-country (even though you may already have CB

Re: [PSES] E-Box Layout on Factory Machines

I think those types of products are engineered once, and then built and serviced for decades. Overly neat designs lend themselves to less problems in production and service over the years, even when the original designers are no longer available to help. I don't think there are any criteria

Re: [PSES] IEC/ANSI/UL/CSA 60950-1 ed.2 Mains Vrms vs Vpeak

Hi Doug; Have you taken a look at IEC 60664 to see if has a similar statement or provides any clarification? Maybe what you're seeing is just a mistake in 60950-1, 2nd ed... -Ken On Wed, Mar 29, 2017 at 8:48 PM, Doug Powell wrote: > All, > > I am reviewing the requirements

Re: [PSES] Carbon Monoxide - Death Value

t; Do we require such measures by law? > Bob Johnson > > > On 02/16/2017 02:38 PM, IBM Ken wrote: > > Hi Bob- do you know what percentage of the 300 are accidental vs > intentional? > > Maybe instead of just alerting, the car should shut down upon reaching > some measure

Re: [PSES] Carbon Monoxide - Death Value

, Nyffenegger, Dave < dave.nyffeneg...@bhemail.com> wrote: > Shutting down automatically while driving would not be good. Just lower > all the windows automatically. > > > > *From:* IBM Ken [mailto:ibm...@gmail.com] > *Sent:* Thursday, February 16, 2017 2:38 PM > *T

Re: [PSES] Carbon Monoxide - Death Value

Hi Bob- do you know what percentage of the 300 are accidental vs intentional? Maybe instead of just alerting, the car should shut down upon reaching some measured CO limit. On Thu, Feb 16, 2017 at 2:29 PM, Robert Johnson wrote: > In the US we sell about 15 million

Re: [PSES] Truly hilarious

Hi Doug- the Retro Encabulator is an amazing product in its own right, but in order to truly appreciate the principle of power generation via modial reaction of magneto-reluctance, one must familiarize oneself with the product upon which it was based, the Turbo Encabulator;

Re: [PSES] UL Go?

Can someone explain to me exactly how I use this to collect Pokémon? On Tue, Dec 13, 2016 at 12:03 PM, Kortas, Jamison wrote: > Has anyone taken a look at this? It was just sent to me by my UL > representative. > > > > Here is the text, as I do not think I can send

Re: [PSES] dimension of the stud for PE

gt; Microsoft Corporation >> >> >> >> The opinions expressed are my own and do not necessarily reflect those of >> my employer. >> >> >> >> *From:* Scott Aldous [mailto:0220f70c299a-dmarc-requ...@ieee.org >> <0220f70c299a-dmarc-requ..

Re: [PSES] dimension of the stud for PE

t; Hi Ken, > > > > Thanks. > > So on short, if table 3B brings requirement of 50mm2 conductor, you would > accept terminal if it brings contact area of 150mm2? > > > > Best regards, > > Bostjan > > > > > > > > *From:* IBM Ken [mailto:ibm...

Re: [PSES] dimension of the stud for PE

Hi Bostjan! Can note (c) in Table 3E be applied to this product? I think it is justifiable to extend the protective bonding rules to the PE connection; i.e. to pass the bonding test or to verify via inspection that the PE conductor is "not smaller" than the mains supply - but that's just my

Re: [PSES] standard for power suply for server room.

Hi Bostjan! You might be able to use 60950 or (UL1012?) anyway; I know the scope says "Mains or Battery powered up to 600V", but I think the focus of that limit (vs the 1000V limit in the LVD for example) might be on just Mains powered circuits, because 600V is the delineation point between "Low

Re: [PSES] Connection to ac mains with split end line cord

d must have a plug, if wiring > terminals are used, cord must be put in conduits. > > Do you know the background of this requirement? Is this applicable even if > unit is used in a computer room with raised floor? > > Best regards, > Bostjan > > From: IBM Ken [mailto:ibm...@gm

Re: [PSES] Measurement Accuracy

Hi Kevin! You didn't specify the measurement method, but if you use thermocouples, does your lab use use OD5012 (used to be called OP-108 and 109)? It is also from the IECEE but gives guidance on how to prepare and use thermocouples. You asked for guidance on acceptable tolerances, which this

Re: [PSES] Connection to ac mains with split end line cord

Hi Bostjan! NEC (NFPA 70) has an Article 645 which covers "Information technology equipment" rooms. This article states, among other things, that flexible linecords must have a 'plug cap'. People sometimes mistakenly stop their analysis there, stating either that the intended installation

Re: [PSES] NEC 2017

FYI, NFPA members can subscribe to get email updates: [image: Header] We've made changes to the document information page for NFPA 70, *National Electrical Code®* Take a look at: NFPA 70, *National Electrical Code®* *2017 edition:* *Posted under Next Edition

Re: [PSES] [BULK] Re: [PSES] Fire requirements in standards

*Hi Rich;* I agree that 62368 attempts to allow for more flexibility the process of designing a safe product, but in the specific case of fire enclosures there is in fact a considerable impact where some existing product can not be certified to the new standard without significant product

Re: [PSES] [BULK] Re: [PSES] Fire requirements in standards

ons if you use the new > requirements over the old. > > > > 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] &

Re: [PSES] Fire requirements in standards

Hi Brian; Do you mean specifically the changes to the fire enclosure requirements or the overall differences between 60950 and 62368? If it's the latter, ECMA TR/106 might be helpful (but be forewarned, this document compares 60950 to the 1st edition of 62368). The best part is that it's free!

Re: [PSES] earthing through PCB traces

hey should already be compliant somehow. -Ken On Mon, Jun 27, 2016 at 11:09 AM, IBM Ken <ibm...@gmail.com> wrote: > Hi Bostjan! > It looks like 5.6.4.1 gives you four choices: > > (1) Minimum conductor sizes in G.5 > > or (if, presumably, you don't meet the minimum conductor size

Re: [PSES] earthing through PCB traces

Hi Bostjan! It looks like 5.6.4.1 gives you four choices: (1) Minimum conductor sizes in G.5 or (if, presumably, you don't meet the minimum conductor sizes in G.5) (2) Meet 5.6.6 (test). If (and only if) the protective current rating is >25A you *also* have to meet Table 31 (in general, the

Re: [PSES] Source for Quality Video Cables

Hi Brian; Maybe this is a dumb idea, but perhaps you could enclose the whole cable in a tubular copper braid (or mylar-foil tape) and try to solder to the shield of the DVI connectors? Or, if you are cutting away the overmold anyway, solder the braid to the backshell. It would be a little

Re: [PSES] Colour of affixed CE Mark?

Philip; I usually see it as black on a while label, or cast/molded into products in whatever colo(u)r that product case already is. I've never seen it in yellow and typically would avoid using red, yellow, hot pink, or anything that might look at first glance like a warning, but I really don't

Re: [PSES] Reliable means to attach thermocouple to object

Hi Scott; You may not be required to use it, but the IECEE's Operational Document 5012 (the previous document, OP-108 was superseded by OD-5012 last year) describes methods for preparing, attaching, extending, and using thermocouples. Sections 8.4 through 8.6 cover the attachment of

Re: [PSES] Outdoor Bluetooth speakers

Hi Scott, I don't have any experience in this area but have you looked at 60950-22? On Tue, Dec 22, 2015 at 11:21 AM, Scott Xe wrote: > It is my first time to test an audio product for outdoor use. The product > is powered by rechargeable lithium batteries and primarily

Re: [PSES] LVD EMC for Greece

Get payment in advance before shipping product? :-D On Sat, Jul 11, 2015 at 12:34 PM, Scott Xe scott...@gmail.com wrote: Understand Greece is a member of EU and they should follow the EU directives. Is there any specific requirement from Greece? If so, could you point me to where to get

Re: [PSES] input current rating

Hi Bostjan! I had heard (and perhaps this is apocryphal) that the 10% was intended to allow for manufacturing tolerances in the final product. I don't know how the number was arrived at. -Ken On Sun, May 17, 2015 at 12:13 AM, Boštjan Glavič bostjan.gla...@siq.si wrote: Dear experts, Does

Re: [PSES] Can Safety Related Instructions be On Line Only?

Personally, I would take a conservative approach where you provide some basic safety information (whatever the high flyers for your product are) and information on how to access the rest of the safety info (and perhaps a backup such as a phone number or mail address in case the website goes down

[PSES] Resumes wanted

Hi folks; I am looking for folks interested in working in EMC/Safety compliance in the Poughkeepsie, NY area. The ideal candidate would be an EE or CE with some regulatory experience, but will consider college new-hires with the correct attitude. The job requires a maniacal attention to detail

Re: [PSES] UL Trademark and Tradename Indexes no longer public

Purchase the latest available set of UL Yellow Books (Recognized Component Directory) that you can find and hope that most of the manufacturers haven't changed their logos since it was printed :-) -Ken On Mon, Mar 9, 2015 at 1:09 PM, Douglas Powell doug...@gmail.com wrote: This is interesting.

Re: [PSES] Misuse mains cordset

But DO heat them up and blow bubbles with them: https://www.youtube.com/watch?v=RhcmxU-Tvac https://www.youtube.com/watch?v=WKvpRlEPbO8 On Sat, Oct 18, 2014 at 2:30 AM, John Woodgate j...@jmwa.demon.co.uk wrote: In message dfab52bf367549e585664e1e606952de@BN3PR0801MB0979.namprd08.

Re: [PSES] Safety Interlock Switches

I had a very similar situation. Are you using a CK or Omron switch? I also remember seeing the switch and thinking it looks like the door light switch from an old refrigerator. I have a very similar-looking switch in my home oil furnace (which is from the 1980s) What we did was put the switch

Re: [PSES] Standards for labels

For what it's worth, UL accepts UL 969 for labels on NRTL marked products but insists I do a Hexane label rub test (for permanence) before giving me a CB report... -Ken On Mon, May 5, 2014 at 8:58 PM, Nyffenegger, Dave dave.nyffeneg...@bhemail.com wrote: Hi Folks, The NRTLs I work with

Re: [PSES] Risk Assessments and mitigation for EMC chambers

My guess is because a microwave is a much smaller volume; not likely to have a human inside it when activated. On Fri, Jan 10, 2014 at 9:13 AM, Sundstrom, Michael michael_sundst...@overheaddoor.com wrote: From a RF Health and Safety point of view, why is a microwave oven allowed with just an

Re: [PSES] Risk Assessments and mitigation for EMC chambers

. *From:* IBM Ken [mailto:ibm...@gmail.com] *Sent:* Friday, January 10, 2014 7:36 AM *To:* EMC-PSTC@LISTSERV.IEEE.ORG *Subject:* Re: [PSES] Risk Assessments and mitigation for EMC chambers My guess is because a microwave is a much smaller volume; not likely to have a human inside it when

Re: [PSES] Job titles

When I was a senior in high school and preparing to go to college, I was surprised at the number of times this exchange occurred: Them: So what major are you going for? Me: I'm going to be an Engineer. Them: Like... on a train? I guess you have to consider your audience. If you're pitching,

Re: [PSES] Safety and Altitude

I've used a number of different altitudes beyond the 2000m default (scaling based on IEC 60664 as mentioned in annex G of '950). You may know this, but I just want to point out- your product does not have to *function* at 5000m, it can shut down for OT or whatever, they just seem to want the

Re: [PSES] Wire ampacities -

Ampacity charts (particularly in the NEC) may assume wire pulled in conduit, more than one current-carrying conductor, etc. You may be better off using a chart from your product Standard (60950 has something to say on this topic but it's a bit conservative).In your case, I would approach the

Re: [PSES] California Prop 65

no... *The* Californians: http://www.nbc.com/saturday-night-live/video/the-californians/n13474/ On Tue, Sep 3, 2013 at 2:34 PM, ralph.mcdiar...@schneider-electric.comwrote: Californians ? ___ * Ralph McDiarmid* |

Re: [PSES] 60950-1 durability test solvent

If you are doing the label rub test under UL's DAP program I think the headaches involved (from the paperwork, not the fumes) would motivate me to just buy reagent grade Hexane from a chemical supply house rather than argue with UL over what the content of a can of commercial product from the

Re: [PSES] laptop - house fire

*P.E.I. deputy fire marshal Robert Arsenault demonstrates how vents on a laptop computer can be blocked when it is sitting on a pile of clothes. (CBC)* Why did he pick that brand of laptop to demonstrate with? XD Does anyone have more information on this incident? On Tue, Mar 12, 2013 at 2:49

Re: [PSES] FCC and very low-power wireless devices

It is in-between the CDMA and GSM uplink (824-849) and downlink (869-894) frequencies, but perhaps there are other services in that 850-869 mhz space? This eye chart ( http://transition.fcc.gov/Bureaus/OPP/working_papers/oppwp38chart.pdf ) suggests there may be some private commercial radio

Re: [PSES] laptop - house fire

be unwise. I have run across way to many substitutes that do not follow expected assumptions of performance, and cheep too! -- *From:* Aldous, Scott scott.ald...@aei.com *To:* IBM Ken ibm...@gmail.com; EMC-PSTC (E-mail) EMC-PSTC@LISTSERV.IEEE.ORG *Sent:* Tuesday

Re: [PSES] SV: Laboratory Equipment - the forgotten child

When using the pluggable power cord as the disconnect, were you required to check and demonstrate that the connectors on both ends of the power cord were rated for disconnection under load/current interrupting/ hot unplug? -Ken A On Sat, Nov 3, 2012 at 9:26 PM, Bill Owsley wdows...@yahoo.com

Re: [PSES] Standard for water hoses

. Brian -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of IBM Ken Sent: Monday, October 22, 2012 12:32 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Standard for water hoses Hello! Are there any standards (I'm interested in Product Safety Standards from

[PSES] Standard for water hoses

Hello! Are there any standards (I'm interested in Product Safety Standards from UL, CSA, the IEC, or EN standards) covering water-carrying hoses? I am looking for something that covers flammability, construction, pressure rating, etc. The end product is a piece of ITE certified to 60950-1, if

[PSES] Importers in Argentina and Mexico

Are there companies in Argentina and Mexico who will serve as a manufacturer's importer (for purposes of INMETRO and NOM certification)? Does anyone have specific pointers to any companies that do this? Thanks -Ken - This message

Re: [PSES] A curiosity question

I have notice that in some Standards documents and always assumed it was a way to track the source of the original (paid-for) document in case someone was selling illegal copies (PDFs or photocopies). -Ken On Tue, Sep 4, 2012 at 12:43 PM, Doug Powell doug...@gmail.com wrote: All, I have

Re: [PSES] CE Marking of Power Cables

, What are the differences between rewirable plugs non-wirable plugs in terms of CE mark? Scott On 22/8/12 11:33 AM, IBM Ken ibm...@gmail.com wrote: Would this be for molded power cords only, or does it include assembled power cords, for Pluggable type B equipment, for example, made up

Re: [PSES] CE Marking of Power Cables

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

Re: [PSES] Ignition sources and exposure time

And also in 950 with the cheesecloth, tissue paper, and wood. On Wed, Aug 15, 2012 at 3:20 PM, Doug Powell doug...@gmail.com wrote: Conversely, it seems possible to use a standardized ignitable material to evaluate ignition sources. And this has been done to some extent in IEC 610101-1

Re: [PSES] EU sets EMC limits for London Olympics

Analyst EMC Lead (214) 579 6312 office (940) 390 3644 cell KB5UKT ** ** *From:* IBM Ken [mailto:ibm...@gmail.com] *Sent:* Tuesday, August 07, 2012 7:57 PM *To:* EMC-PSTC@LISTSERV.IEEE.ORG *Subject:* Re: [PSES] EU sets EMC limits for London Olympics ** ** Why

Re: [PSES] EU sets EMC limits for London Olympics

...@mail.gmail.comcakeaba2ddm%2bzsvo4ur8dzduh5wshjpdptjyes6xkg31_yox...@mail.gmail.com, dated Tue, 7 Aug 2012, IBM Ken ibm...@gmail.com writes: Do you still need a license to own a television in the UK Yes. and do they still send vans around to detect unlicensed TV's? Seldom, because current TVs don't radiate

Re: [PSES] EU sets EMC limits for London Olympics

To: EMC-PSTC@LISTSERV.IEEE.ORG Date: 08/06/2012 11:17 PM Subject: Re: [PSES] EU sets EMC limits for London Olympics In message cakeaba2ddm+zsvo4ur8dzduh5wshjpdptjyes6xkg31_yox...@mail.gmail.com, dated Tue, 7 Aug 2012, IBM Ken ibm...@gmail.com writes

Re: [PSES] EU sets EMC limits for London Olympics

Do you still need a license to own a television in the UK and do they still send vans around to detect unlicensed TV's? On Mon, Aug 6, 2012 at 5:04 PM, John Woodgate j...@jmwa.demon.co.uk wrote: In message **FCA549BE3ECF9D4CB8CB8576837EA4**8914083C@ZEUS.cetest.local, dated Mon, 6 Aug 2012,

Re: [PSES] Insulative barriers deposited on metal surfaces

found in UL840, and instead, the distances must be met, or barriers may be used. Regards, Brian C. *From:* IBM Ken [mailto:ibm...@gmail.com ibm...@gmail.com] *Sent:* Tuesday, July 17, 2012 4:50 PM *To:* Brian Ceresney *Cc:* EMC-PSTC@LISTSERV.IEEE.ORG *Subject:* Re: Insulative barriers

Re: [PSES] Insulative barriers deposited on metal surfaces

It might be helpful for the discussion to know the Standard that applies to the component you are certifying. -Ken On Tue, Jul 17, 2012 at 6:03 PM, Brian Ceresney bceres...@delta-q.comwrote: Hello Compliance Experts, I'm interested in the use of a high temperature insulator,

Re: [PSES] Impact on NRTL Certification - Refurbished/Remanufactured Products

Aleast one NRTL (UL) has a program that covers this. Basically they will write a new report covering the refurbishment process and then audit you to it - - just like they do for 'new' product. I assume the fees are about the same as a new product, so they get to bill you twice... -Ken On

Re: [PSES] Interview Questions

+eowdq40fu9dh88oah6a1...@mail.gmail.com, dated Tue, 3 Jul 2012, IBM Ken ibm...@gmail.com writes: PS: Who operates at 110VAC 50Hz? Portable equipment used on construction sites; it's actually 55-0-55, with the centre grounded. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk

Re: [PSES] Interview Questions

You could ask them for a hipot voltage per 5.2.2; I don't believe the table is available via google; you would also be able to evaluate their useage of the table, conversion from RMS to Peak voltage, AC vs DC, etc. You could also ask them to summarize the requirements for a fire or mechanical

Re: [PSES] Interview Questions

Not sure this is what you are looking for; but the 110-230V unit is rated as a range, so the tolerance would be below 110 and above 230. The 110/230 V has two distinct rating ranges, so the tolerances would be above and below 110 AND above and below 230VAC. That's the first thing that pops into

Re: [PSES] Color of Mains Wiring

For the ground/bond, can't you also use plain green wiring (yellow tracer optional) or bare copper? Perhaps this is just in 60950... On 4/7/12, John Woodgate j...@jmwa.demon.co.uk wrote: In message 4f7f83c9.5040...@radiusnorth.net, dated Fri, 6 Apr 2012, Scott Douglas sdoug...@radiusnorth.net

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