Re: [PSES] Underwater Luminaires for CE

It's an example of bad standardization. They do occur, usually because no-one spots the issue, or at least no-one challenges it. Luminaires come under one committee, pumps under a different one. Besides, I doubt that anyone wants to make that sort of pump to run off 12 V. Look at the Scope cla

Re: [PSES] Practical ethics? -- text version

nvironment. John E Allen W. London, UKK From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: 27 December 2016 21:38 To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> Subject: Re: [PSES] Practical ethics? -- text version The point I made was that the British Army does

Re: [PSES] Practical ethics? -- text version

e on the part of light sources used at night... Ken Javor Phone: (256) 650-5261 _____ From: John Woodgate mailto:jmw1...@btinternet.com> > Date: Tue, 27 Dec 2016 21:18:24 - To: 'Ken Javor' mailto:ken.ja...@emccompliance.com> >, mailto:EMC-PSTC@LISTSERV.IEEE.ORG&g

Re: [PSES] Practical ethics? -- text version

Yes, that's the crunch point: But once that company takes off and is run not by the founder but by a board of directors... Can we write a law to stop it happening? What if it's run by the founder's offspring? That's often bad news. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.

Re: [PSES] Practical ethics? -- text version

I think your point relates to the US Army, not the British. Is that right? With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Ken Javor [mailto:ken.ja...@emcc

Re: [PSES] Practical ethics? -- text version

mailto:john_e_al...@blueyonder.co.uk] Sent: Tuesday, December 27, 2016 11:53 AM To: 'John Woodgate' ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Practical ethics? -- text version John Your 2nd para could be “correct”, but hopefully “not quite” because, maybe, some of those involved will have lear

Re: [PSES] Practical ethics? -- text version

It's a very long and cherished tradition in the British Army that it does not use foresight. Your exclusion almost certainly stemmed from your sticking to hard facts and not 'dressing up' your opinions to make them more acceptable. You might say that that is unethical, but look at it another

Re: [PSES] Practical ethics? -- text version

" a division of labor between profitability and responsibility." Is the principle of my contention that project leaders should be responsible, inside the company, for compliance, not the safety and EMC experts. What I mean is that when the product is submitted to the experts, it's not expected to f

Re: [PSES] Practical ethics? -- text version

Being ethical doesn't mean that you must have god-like insight and foreknowledge. You are still a human, with human limitations. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. -Original Mess

Re: [PSES] EN60950-1 dates and amendments

Roughly speaking, everything is different. 62368-1 uses the 'hazard-based' principle to determine what should be specified and how compliance is to be determined. In some, but by no means all, cases, this new approach results in a similar or near-identical compliant product,, but that is arr

Re: [PSES] British question, about a BS1363 plug-in power supply

: Saturday, December 17, 2016 5:39 AM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] British question, about a BS1363 plug-in power supply John, Is the 32A breaker an IRE requirement and every household must comply regardless how old the house is? On one occasion, some UK

Re: [PSES] UL Go?

More lunatic than stellar? With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Peter Tarver [mailto:ptar...@enphaseenergy.com] Sent: Friday, December 16, 201

Re: [PSES] British question, about a BS1363 plug-in power supply

Solar Business Schneider Electric *Please consider the environment before printing this e-mail     -Original Message- From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Monday, December 12, 2016 1:50 PM To: Ralph McDiarmid ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Br

Re: [PSES] aluminum vs copper wiring

Message- From: Ralph McDiarmid [mailto:ralph.mcdiar...@schneider-electric.com] Sent: Tuesday, December 13, 2016 9:38 PM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] aluminum vs copper wiring I surprised it would have ever been 'code compliant' for building w

Re: [PSES] aluminum vs copper wiring

Even 1.5 is a bit optimistic. Data in BS 7671 on voltage drop gives values around 1.7 for the ratio, for the metals in the metallurgical conditions actually used in cables. Aluminium wires tend to deform under contact pressure, thus relaxing the pressure and raising the contact resistance. With

Re: [PSES] British question, about a BS1363 plug-in power supply

rm). So, if no power cord, no need for a fuse in the plug. I wonder if the power supply has a fuse to protect the power supply. If so, would this count as the plug fuse? Rich From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Saturday, December 03, 2016 5:01 AM To: mailto:EMC-PSTC@LISTS

Re: [PSES] EN 302 195 Distance Conversion Factor

There are two aspects to this: 1. What will satisfy the EU authorities? 2. What is the best that electrical science can do in this notoriously complex situation? I addressed the first question. It's obvious that if no emission can be detected at 3 m, the product passes the requirements, but

Re: [PSES] Placing on the Market

If your 'affiliate' is not a subsidiary company and has other suppliers, placing on the market occurs at your stage 3. If, however, the 'affiliate' is you in disguise, it occurs at your stage 5. I've never seen it stated explicitly in these terms, but I think the product is 'placed on the market'

Re: [PSES] EN 302 195 Distance Conversion Factor

In the absence of any other solution, you could use the 300 330 factor and explain why In an 'EMC assessment document'. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum m

Re: [PSES] British question, about a BS1363 plug-in power supply

It's in 62389-1 as well. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Matthew Larkin [mailto:m.lar...@samsung.com] Sent: Monday, December 5, 2016 1:48

[PSES] British question, about a BS1363 plug-in power supply

I received a 5 W SMPS plug-in power supply as part of a multi-unit product. It has interchangeable pins for EU, US, Australian and UK sockets, but it has no fuse. I think this is illegal and intend to notify Trading Standards, as the overall product is marketed by a prominent European company and

Re: [PSES] pre-mating of PE in hot-plug connector

Yes, the reason that statement is there is precisely due to a big argument I had with a connector manufacturer many years ago. For complex reasons, basically ceasing production of a widely-used connector, the manufacturer claimed that it would be unsafe according to his test-house's contrived inter

Re: [PSES] pre-mating of PE in hot-plug connector

There is such a huge range of physical sizes of connectors that specifying 'how much longer' would be very difficult. I think that provided the connector reliably meets ' PE connection shall make earlier and break later than the supply connections', it is OK. With best wishes DESIGN IT IN! OOO

Re: [PSES] dimension of the stud for PE

Reminds me of an amusing argument between a student and a 5 V 1000 A MG set, observed from a safe distance. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. Fro

Re: [PSES] DC-power conducted emissions per CISPR11: 2016

ent. -Original Message- From: ce-test, qualified testing bv - Gert Gremmen [mailto:g.grem...@cetest.nl] Sent: Monday, November 28, 2016 10:57 AM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] DC-power conducted emissions per CISPR11: 2016 When the this distinction betwe

Re: [PSES] DC-power conducted emissions per CISPR11: 2016

Yes, there is an issue even with the latest Directives Part 2. It isn't clear whether a reference can be dated in some places in the text and dated in others. In my opinion, if it's dated in Clause 2 Normative references it is dated throughout the document. With best wishes DESIGN IT IN! OOO

Re: [PSES] DC-power conducted emissions per CISPR11: 2016

This can be a bit complicated. Factors include whether 61326-1 and/or 60601-1-2 (or the Part from which that is derived) makes a dated or undated reference to CISPR 11. If it's dated, the dated edition applies, even if a newer one exists. If the dated reference is withdrawn (passed beyond doco

Re: [PSES] Public view of this email server?

Ted Eckert The opinions expressed are my own and do not necessarily reflect those of my employer. From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Tuesday, November 22, 2016 8:03 PM To: Ted Eckert mailto:ted.eck...@microsoft.com> >; EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PS

Re: [PSES] Public view of this email server?

An employer seeking to restrict personal communication on the Internet may violate the First Amendment.. To replace the sesquipedalian disclaimers imposed by corporate lawyers, I coined the TLA OOO which has appeared in my sig-tag since time immemorial. With best wishes DESIGN IT IN! OOO –

Re: [PSES] Incidental Radiators per FCC Part 15

DC motors were a notorious source of EMI even 70 years ago. It isn't normally difficult to cut the emission to a low enough level and I would encourage that. But I am surprised that anyone is using a DC motor with brushes these days. Of course, if it has no brushes, there is something wrong with

Re: [PSES] Internal point of coupling

If you have a 3-way plugged into it, it is an IPC. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. -Original Message- From: Ed Price [mailto:edpr...@cox.net] Sent: Saturday, November 19,

Re: [PSES] Internal point of coupling

usually the point for which electromagnetic compatibility is to be considered" André Gomes Videira Laboratório de Ensaios e Certificações Telefone: + 55 47 3276-7613 | Skype: agvideira WEG Drives & Controls - Automação Ltda. www.weg.net -Mensagem original- De: John Woodgate [mailto:jm

Re: [PSES] RES: [PSES] Internal point of coupling

; André Gomes Videira Laboratório de Ensaios e Certificações Telefone: + 55 47 3276-7613 | Skype: agvideira WEG Drives & Controls - Automação Ltda. www.weg.net -Mensagem original- De: John Woodgate [mailto:jmw1...@btinternet.com] Enviada em: sexta-feira, 18 de novembro de 2016 08:59 Para:

[PSES] Internal point of coupling

I am looking for a definition (preferably formal) of 'Internal point of coupling' for a proposed IEC Technical Report. It is not in Electropedia and is mentioned (as IPC) In IEC 61000-2-6 without definition. I am told that it might be defined in one of the IEC 61800 series standards, but there are

Re: [PSES] RED

'Mess' is a major plank of the EU government policy. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Pearson, John [mailto:john.pear...@polycom.com] Sen

Re: [PSES] Paper Manuals?

on.kor...@ecolab.com] Sent: Monday, November 14, 2016 6:57 PM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Paper Manuals? Well, at some point hey moved away from stone tablets, so there is hope! Thanks, Jamison From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Monday, No

Re: [PSES] Paper Manuals?

There is also the issue, which I know has surfaced in at least one safety standards committee, that people simply won't bother to download a manual, get into possibly dangerous areas and then sue, on the basis that only words on paper (parchment, vellum, clay and stone tablets) are recognized in

Re: [PSES] EU EMC Harmonized Standards (2014/30/EU) for Audio Power Amplifiers

2016 9:09 AM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] EU EMC Harmonized Standards (2014/30/EU) for Audio Power Amplifiers Hasn’t 55103-1:2009 been withdrawn and replaced by 55032:2012. I believe professional audio products shipped after 2 march 2017 must use 55032 to d

Re: [PSES] EU EMC Harmonized Standards (2014/30/EU) for Audio Power Amplifiers

by telephone or by e-mail and delete the material from any computer. Thank you for your co-operation. From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Friday 11 November 2016 22:22 To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> Subject: Re: [PSES] EU EMC Harmonized

Re: [PSES] EU EMC Harmonized Standards (2014/30/EU) for Audio Power Amplifiers

EN 55032 applies, and EN 61000-3-2. Audio amplifiers are in EN 61000-3-2 Class A. For immunity, EN 55020 still, until EN 55035 is finalized. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England

Re: [PSES] Bulk Current Injection

Are you using the 2013 edition of IEC 61000-4-6? It's certainly a bit confusing. Figure 5 shows the strap without any qualification about its use, but Figure 14 says 'if needed'. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Wo

Re: [PSES] Automated vehicles [General Use]

In short, yes. Accept the nightmares that end with the dawn of inspiration and dream of the on-going consultancy fees. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum mane

Re: [PSES] Automated vehicles.

What solution would you propose that is obviously both practicable and better? With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Jim Hulbert [mailto:jim.hul

Re: [PSES] Automated vehicles.

By that time, flying cars will be normal. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Ken Javor [mailto:ken.ja...@emccompliance.com] Sent: Sunday, November 6, 2016 4:10 PM To: EMC-PSTC@

Re: [PSES] Automated vehicles

By that time, flying cars will be normal. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Ken Javor [mailto:ken.ja...@emccompliance.com] Sent: Sunday, November 6, 2016 4:10 PM To: EMC-PSTC@

Re: [PSES] Operating temperature range for consumer electronics & electrical appliances

It's largely unknown in Britain, I think. In recent years in the south of the island, an interior temperature near 0 C has probably been very rare, but that would not apply much further north, in the Highlands of Scotland. With best wishes DESIGN IT IN! OOO – Own Opinions Only

Re: [PSES] AC Mains Outlet fuses or daul pole breaker??

I think you do have to be concerned about it, now that you have realized the hazard exists. As to what standard requires a breaker, I would say that your normally-applicable standard has an overarching implied provision that the product must be 'safe', otherwise it doesn't meet the standard. An una

Re: [PSES] Fwd: ESD, part of our training Enjoy!

How many did you terminate with ozone ? With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. -Original Message- From: Cortland Richmond [mailto:k...@earthlink.net] Sent: Thursday, November 3,

Re: [PSES] ETSI EN 302 195 V2.1.1

See my previous post about 'hi-jacking'. I think ETSI is justified in resisting the Commission's bid to insist that 'a standard is only harmonized if we say so'. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associa

Re: [PSES] ETSI EN 302 195 V2.1.1

That's how it should be, and was, but the Commission insists that a standard isn't harmonized *until* it is listed. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manen

Re: [PSES] ETSI EN 302 195 V2.1.1

In fact, the Commission hi-jacked the term 'harmonized' from the original meaning ' when it has been voted and finally published [as an EN]' to mean 'published in the OJ'. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate a

Re: [PSES] Low current Transformer OC Protection

M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. -Original Message- From: Brian O'Connell [mailto:oconne...@tamuracorp.com] Sent: Monday, October 31, 2016 5:31 PM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Low current Transformer OC Protectio

Re: [PSES] Low current Transformer OC Protection

This is why small transformers that don't need a fuse were developed. They have a special type of coated wire for the primary winding, which goes quietly open-circuit if it gets too hot. However, I suppose your product standard might not allow them. The limits based on load current are techni

Re: [PSES] Measurement Uncertainty Above 18 GHz

Good point. They are Technical Specifications rather than full standards, but they are free downloads form the ETSI site. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum

Re: [PSES] Measurement Uncertainty Above 18 GHz

I don't see that one can tell if it's reasonable or not without a lot more information, which is probably confidential to your company. But there isn't any major effect that occurs just above 18 GHz to make CISPR 16-4-2 no longer a good guide at least. Of course, you need an FAR that has no un

Re: [PSES] 2nd hand or refurbished products

ons Only <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: john Allen [mailto:john_e_al...@blueyonder.co.uk] Sent: Thursday, October 27, 2016 6:49 PM To: 'John Woodgate' ; EMC-PSTC@LISTSERV.IEEE.ORG

Re: [PSES] 2nd hand or refurbished products

The Blue Guide is a guide – not legally binding. Individual Directives have provisions that may seem at variance, in which case the Directive is definitive. I still say that looking for loopholes is likely to be very time-consuming and have an uncertain outcome. With best wishes DESIGN IT IN!

Re: [PSES] 2nd hand or refurbished products

This is quite complicated. Unless it causes a major problem, assume they do apply. Second-hand and refurbished products are not treated in the same way, because second-hand products may be offered for private sale by people who don't have all the necessary resources. With best wishes DESIGN I

Re: [PSES] ITE Kiosk Installed in the Airport Terminals in the US

ar frequency bands. John E Allen W.London, UK From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: 26 October 2016 19:53 To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> Subject: Re: [PSES] ITE Kiosk Installed in the Airport Terminals in the US Maybe, but in a

Re: [PSES] ITE Kiosk Installed in the Airport Terminals in the US

From: John Allen [mailto:john_e_al...@blueyonder.co.uk] Sent: Wednesday, October 26, 2016 8:17 PM To: 'John Woodgate' ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] ITE Kiosk Installed in the Airport Terminals in the US And there will be a lot of other fixed and mobile comms at various fr

Re: [PSES] ITE Kiosk Installed in the Airport Terminals in the US

Maybe, but in any case I would look at immunity to frequencies used by airport radar. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Grace Lin [mailto:g

Re: [PSES] Table 6 H-field limits per ETSI EN 300 330-1 v1.8.1

Yes, that is what it means. It might be made clearer just by adding a comma after 72, but a simple graphic would make the meaning totally certain. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh Eng

Re: [PSES] FW: [PSES] IEC 62368-1

manent. From: Pete Perkins [mailto:peperkin...@cs.com] Sent: Thursday, October 20, 2016 1:18 PM To: 'John Woodgate' ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] FW: [PSES] IEC 62368-1 John, et al, Just remember that this is a dynamic document and any circulated version

Re: [PSES] FW: [PSES] IEC 62368-1

It's only 16 kB, so it's not size that is the problem. The copy-and paste version came through to me. This may help: Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc.

Re: [PSES] IEC 62368-1

ovell, Paul [mailto:paul.lov...@ul.com] Sent: Thursday, October 20, 2016 5:42 AM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] IEC 62368-1 Hi All, I spoke to the Secretary of IEC TC 108 and he is happy to share the current state of affairs. I hope this is helpful. Best rega

Re: [PSES] CE for military aeronautical product

I think you have to ask the military customer what they want. I'm not sure that RoHS even applies to military equipment. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum m

Re: [PSES] Criteria for determining industrial vs. non-industrial for EMC testing purposes

1. Yes. 2. Original statement is true only if the substation output is at MV or higher. If it is at LV, the location is strictly RCLI (residential, commercial and light industrial). a) In most countries in Europe, yes, but in France there are some separate industrial LV networks. You have

Re: [PSES] Criteria for determining industrial vs. non-industrial for EMC testing purposes

] Sent: Wednesday, October 19, 2016 9:04 AM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Criteria for determining industrial vs. non-industrial for EMC testing purposes >The 'prohibition' also results in no requirement for warning notices to the >user – a '

Re: [PSES] Criteria for determining industrial vs. non-industrial for EMC testing purposes

his topic over and over, I was hoping to establish a go forward approach. Ideally, that approach would be “design for both industrial AND non-industrial and be done with it.” However, other factors are at play than just my druthers. -Jamison From: John Woodgate [mailto:jmw1...@btinternet.

Re: [PSES] Working towards compliance as per the EN 55032

SIGN IT IN! OOO – Own Opinions Only <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Charlie Blackham [mailto:char...@sulisconsultants.com] Sent: Tuesday, October 18, 2016 9:56 PM To: John Woodgate ; EMC-PSTC@L

Re: [PSES] Working towards compliance as per the EN 55032

o:char...@sulisconsultants.com] Sent: Tuesday, October 18, 2016 9:31 PM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Working towards compliance as per the EN 55032 Your previous comment….. >From: John Woodgate [mailto:jmw1...@btinternet.com] >Sent: 18 October 2016 18:24 &

Re: [PSES] Working towards compliance as per the EN 55032

Mediaeval scholars used to answer any question by beginning with the Creation. I think that answers should be kept strictly simple and not explore the whole Universe. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and As

Re: [PSES] Criteria for determining industrial vs. non-industrial for EMC testing purposes

For Europe, the sources are the Generic standards, which are substantially consistent with CISPR 11. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Doug

Re: [PSES] Working towards compliance as per the EN 55032

Yes, the docopocoss for EN 55022 is 5 March 2017. Products leaving the factory after that must meet EN 55032. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. F

Re: [PSES] Criteria for determining industrial vs. non-industrial for EMC testing purposes

t. From: John Allen [mailto:john_e_al...@blueyonder.co.uk] Sent: Tuesday, October 18, 2016 4:31 PM To: 'John Woodgate' ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Criteria for determining industrial vs. non-industrial for EMC testing purposes You often get heavy electrical machinery in re

Re: [PSES] Criteria for determining industrial vs. non-industrial for EMC testing purposes

IN! OOO - Own Opinions Only <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Schmidt, Mark [mailto:markschm...@xrite.com] Sent: Tuesday, October 18, 2016 3:57 PM To: John Woodgate ; EMC-PSTC@LISTSERV.IE

Re: [PSES] Criteria for determining industrial vs. non-industrial for EMC testing purposes

For Europe, 'industry' means heavy industry - large machines, high-power electrical installation, not powered from the public low-voltage supply. No broadcast radio or TV receivers likely to be within 30 metres. With best wishes DESIGN IT IN! OOO - Own Opinions Only

Re: [PSES] IEC 62368-1

IT IN! OOO - Own Opinions Only <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: McBurney, Ian [mailto:ian.mcbur...@allen-heath.com] Sent: Tuesday, October 18, 2016 1:20 PM To: John Woodgate ; EMC-PSTC@LISTS

Re: [PSES] IEC 62368-1

There is such a document but it is an internal IEC TC108 HBSDT document. If your company were a member of a trade association represented on BSI committee EPL108 you could obtain a copy, but I don't think there is any legitimate way otherwise. I have proposed that the document (frequently update

Re: [PSES] RE from Flat Panel ICs

ons also say to reduce common mode current. But obviously this shouldn't have been said too:) On October 14, 2016 9:24:36 AM PDT, John Woodgate mailto:jmw1...@btinternet.com> > wrote: It seems to me that claiming familiarity with general recommendations severely restricts what anyo

Re: [PSES] RE from Flat Panel ICs

It seems to me that claiming familiarity with general recommendations severely restricts what anyone can add. The general recommendation for reducing RE is to minimise the areas of current loops by pairing 'go' and 'return' conductors on adjacent layers of the PC board. But you obviously know th

Re: [PSES] Shorting switch - appropriate markings

you also need the triangular Caution symbol and/or the ISO symbol telling you to “consult the manual”, adjacent to the switch. John E Allen. W.London, UK From: John Woodgate [mailto:jmw1...@btinternet.com <mailto:jmw1...@btinternet.com> ] Sent: 11 October 2016 08:53 To: EMC-PSTC@LISTSERV.IEEE.

Re: [PSES] Shorting switch - appropriate markings

Would IEC 60417-5274: Manual change-over unit do? With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Doug Powell [mailto:doug...@gmail.com] Sent: Tuesday, O

Re: [PSES] When is EMI testing performed?

[mailto:g.grem...@cetest.nl] Sent: Wednesday, October 5, 2016 3:03 PM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] When is EMI testing performed? May i try another coding ? While testing<>end call (nobeer) call collegues(headache&sweat&cursing) call nopromotion(

Re: [PSES] When is EMI testing performed?

I'd like to write this using the puzzling math symbols 'inverted A' and 'reversed E', but it's too much of a hassle, so you have to imagine them: For all [EMC/EMP tests], there exists [ending]. There exists [ending] = [happy]. IFFI [ending] = [happy], then there exists [beer]. With best wishes

Re: [PSES] When is EMI testing performed?

No personal experience, but I have heard of this procedure. It might also apply to safety testing. Logically, EMC and safety testing won't affect the environmental test results, but the opposite is not so very improbable. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk

Re: [PSES] [RFI] Part 15 isn't enough..

The problem with immunity cases is that it's really necessary to investigate each one. Sometimes it only needs a site inspection [1], but in other cases, it's necessary to DF the source and measure its field strength, which is costly. [1] Site inspection: Why can't I unlock my car with the remot

Re: [PSES] [RFI] Part 15 isn't enough..

er 2, 2016 5:09 AM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] [RFI] Part 15 isn't enough.. I’ve not seen where conformity to the LVD (or MD) disallows operation at 120V. While it wouldn’t make sense or perhaps not allowed to sell 120V rated products for consumer

Re: [PSES] [RFI] Part 15 isn't enough..

o.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Adam Dixon [mailto:lanterna.viri...@gmail.com] Sent: Saturday, October 1, 2016 5:15 PM To: John Woodgate Cc: EMC-PSTC@listserv.ieee.org Subject: Re: [PSES] [RFI] Part 15 isn't enough.. Well, it wasn&

Re: [PSES] [RFI] Part 15 isn't enough..

Products that work only on 120 V obviously won't be CE marked, even if they meet the EMC Directive, because CE requires conformity to all applicable Directives and that includes the Low Voltage Directive. With best wishes DESIGN IT IN! OOO – Own Opinions Only www

Re: [PSES] Susceptible Immunity / Immune Susceptibility

Probably safer for civilians: - If we start a war, we might well lose; - If they might start a war, we need stronger defences/defenses. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. -Origi

Re: [PSES] [RFI] Part 15 isn't enough..

IEC/CISPR classes all of those as immunity. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. -Original Message- From: dward [mailto:dw...@pctestlab.com] Sent: Friday, September 30, 2016 7

Re: [PSES] [RFI] Part 15 isn't enough..

To be logical, it is necessary to have emission limits, immunity requirements and specified measurement distances. Miss any one, let alone two, and the third is impossible to justify. But the protection of radio services distorts this and leads to much misunderstanding. The radio receiver ipso

Re: [PSES] Using 60hz motors in 50hz countries

You can, and should, disclose test data that shows that it won't work. If your customer ignores that (and they sometimes do), it's not your responsibility. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum

Re: [PSES] ELECTRIC SHOCK historical papers

ncern. With best wishes DESIGN IT IN! OOO – Own Opinions Only <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: Pete Perkins [mailto:peperkin...@cs.com] Sent: Saturday, September 24, 2016 4:15 AM To: &#x

Re: [PSES] ELECTRIC SHOCK historical papers

A WG shouldn't be the custodian of such an important resource. However, a simple 'de-fusing' move would be to make a bibliographic list of the papers and make that publicly available. In any case, TC108 has a legitimate claim under IEC rules for a full disclosure of the papers. TC64 can't hav

Re: [PSES] Measurement Accuracy

ginal Message- From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Thursday, September 22, 2016 4:13 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Measurement Accuracy Thank you. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Assoc

Re: [PSES] Measurement Accuracy

: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Measurement Accuracy It is in IEC62052-31; which I believe refers to IEC61010-1 -Original Message- From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Thursday, September 22, 2016 11:28 AM To: Balmukund Vyas; EMC-PSTC

Re: [PSES] Measurement Accuracy

Which standard has that very sensible text? With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. -Original Message- From: Balmukund Vyas [mailto:balmukund.v...@ymllabs.com] Sent: Thursday, Se

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

>From this side of the Herring Pond, it looks as though a law that requires a >plug is sensible for consumer electronics and household appliances (which is >the law in Europe), but has been extended, through excess of zeal no doubt, to >other sorts of product that can be expected to be installed

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