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] 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] 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] 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

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Subject: RE: [PSES] EU EMC Harmonized Standards (2014/30/EU) for Audio Power Amplifiers Hasn’t 55103-1:2009 been withdrawn and replaced by 55032:2012.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] 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] 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] 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

[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] 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:

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] 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] 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] 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] 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] 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] 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

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] 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] 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] 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

[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] 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

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] 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

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] 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] 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] 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] 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] 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

: 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] 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] 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] 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

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

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

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

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

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

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] 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] In-Country Testing

1. Partly to support their test labs and partly because they are not totally satisfied with the IEC standards that specify the tests. Particularly for lithium batteries, the technology is evolving far faster than the standards committees can change the standards (where/if necessary) and the stan

Re: [PSES] Thermal equilibrium - 10% rule

My reading is that the 'previously elapsed duration' is the whole time since the heat run was started. So if you started it 100 min ago, the intervals would be 10 min but for the prescribed 15 min. It could be claimed that the wording implies that 'compound interest' should apply, so that th

Re: [PSES] Thermal equilibrium - 10% rule

Only that , even with cooling and conductor resistivity taken into account, the approach to equilibrium is still very nearly exponential (the resistivity change is non-linear) , so in theory takes infinite time. With best wishes DESIGN IT IN! OOO – Own Opinions Only

Re: [PSES] Thermal equilibrium - 10% rule

bviously, I am going to have to do live compensation of ambient conditions during the test and not afterward. Thanks all, Doug On Fri, Jan 6, 2017 at 12:31 AM, John Woodgate mailto:jmw1...@btinternet.com> > wrote: Only that , even with cooling and conductor resistivity taken int

Re: [PSES] Thermal equilibrium - 10% rule

nd Sylvae in aeternum manent. -Original Message- From: Ralph McDiarmid [mailto:ralph.mcdiar...@schneider-electric.com] Sent: Friday, January 6, 2017 5:03 PM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Thermal equilibrium - 10% rule Please do tell us about th

Re: [PSES] Thermal equilibrium - 10% rule

That's Nikita, not Makita. And if you look at the clip carefully, he's wearing two shoes, so the one he's using as a gavel must have come from a sputnik. 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 man

Re: [PSES] Thermal equilibrium - 10% rule

I think: Those who know me personally have often heard me say what I consider to be a corollary, "Common sense is usually neither.. common or sensible". is a bit too cynical or pessimistic. It isn't common enough, for sure, but it is often sensible. For example, does someone born and educa

Re: [PSES] Thermal equilibrium - 10% rule

Standards can't necessarily cover every possibility. For cyclical effects, I would say that conditions are stable if two successive temperature maxima are equal (within a reasonable tolerance). This doesn't necessarily work if more than one cycle frequency is involved, in which case you have to

Re: [PSES] Thermal equilibrium - 10% rule

ed average (queue size based on 1/f and dT/dt and previous sample interval) with a 'delayed' least-squares fit thru the maxima to see if flat. [hear the ghosts of my math instructors yelling at me to use polynomial regression]. Brian From: John Woodgate [mailto:jmw1...@btinterne

Re: [PSES] Thermal equilibrium - 10% rule

Thermocouples for measuring oven temperatures are welded to a chunk of metal to provide thermal inertia. Without that, a normal thermocouple gives wildly fluctuating output, due to convection currents With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmw

Re: [PSES] Thermal equilibrium - 10% rule

Sylvae in aeternum manent. -Original Message- From: ce-test, qualified testing bv - Gert Gremmen [mailto:g.grem...@cetest.nl] Sent: Saturday, January 7, 2017 11:32 AM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Thermal equilibrium - 10% rule We have to conside

Re: [PSES] Thermal equilibrium - 10% rule

I would be interested to see it, please. 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: ce-test, qualified testing bv - Gert Gremmen [mailto:g.grem...@cetest.nl]

Re: [PSES] WEEE symbol - solid bar

The history of this symbol is complex. I suggest you don't worry too much about the black bar, whether you decide to include it or leave it out. 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. -

Re: [PSES] lowest emissions 4k TV?

The thread is about finding low-emission products (well below relevant limits) to act as 'support devices' , aka 'auxiliary equipment'. The low emissions are required in order not to significantly affect the measurements of the emissions of the equipment under test. With best wishes DESIGN IT

Re: [PSES] lowest emissions 4k TV?

The way to fix this is to scream loud and long at the HDMI committee. It is a long-standing problem and they must be aware of it, but choose to ignore it, which appears irresponsible. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J

Re: [PSES] lowest emissions 4k TV?

I doubt that is possible, since the cable is the main source of radiated emissions. 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: John Allen [mailto:jo

Re: [PSES] WEEE symbol - solid bar

I still say that even most regulators have things that they would rather do than bother about 'bar or no bar'. And if one did raise the matter, just say 'Sorry' and do what they want. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M W

Re: [PSES] lowest emissions 4k TV?

I think the key words 'poorly-constructed' should be noted. Any manufacturing defect that creates an impedance discontinuity in the signal conductors causes mode conversion of the differential signal, creating a small, but significant common-mode signal. With best wishes DESIGN IT IN! OOO – Own Op

Re: [PSES] lowest emissions 4k TV?

y telephone or by e-mail and delete the material from any computer. Thank you for your co-operation. -Original Message- From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Saturday 14 January 2017 11:14 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] lowest emissions 4k TV? I

Re: [PSES] lowest emissions 4k TV?

y e-mail and delete the material from any computer. Thank you for your co-operation. -Original Message- From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Saturday 14 January 2017 12:46 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] lowest emissions 4k TV? Interesting. I thi

Re: [PSES] lowest emissions 4k TV?

ettit [mailto:n6...@comcast.net] Sent: Saturday, January 14, 2017 9:46 PM To: 'John Woodgate' ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] lowest emissions 4k TV? So, contact your national committee representatives to CISPR H and ask that they do this. Ghery S. Pettit Chair, CISPR SC I

Re: [PSES] Machinery Directive Exemption for products specially designed and constructed for military purposes

That machine is for defence purposes in my opinion. If it isn't, what is it for? Training is a 'purpose'. 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: P

Re: [PSES] lowest emissions 4k TV?

Definite need for a flux capacitor or a zwitterion inductor, there. Amendment XVIII coming up?. 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: Ralph McDiarmid [m

Re: [PSES] ISO 13485-2016

These OJ list updates are often long delayed. In fact, a 2016 standard might not yet have completed the endorsement process in CEN. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae i

Re: [PSES] Safety tests of transformers

You may need to look at IEC 60076, which is a multi-part standard. It deals with large transformers, of course. 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: Am

Re: [PSES] Double Pole Mains Switches, Cord Connected Products

ALL European 2-pin 6 A plugs are reversible, and 3-contact plugs used on the Continent are reversible (there are two kinds, one with 2 power pins and side-contact for earth (called 'Schuko') and one with a third pin for earth). The standards you cite are written so that the product is safe, wh

Re: [PSES] Double Pole Mains Switches, Cord Connected Products

a good idea if it is somewhat heavy and then falls on your foot :D (not a myth – it HAS happened, and with painful consequences!) Same thing can happen if the mains cord set is removable and you then happen to touch the pins of the male appliance connector on the appliance! John E Allen W. Lo

Re: [PSES] Double Pole Mains Switches, Cord Connected Products

I think the point is that the standards committees are well aware of reversible plugs and so they put provisions in the standards that make the product safe anyway. Even some switched wall-sockets are single-pole. Qualified service technicians are obviously trained to be aware of the issue. Wi

Re: [PSES] New LG Monitors and Wi-Fi

Well, 2 m is rather too close; the standard distance is 3 m. But we do not know whether all routers produce the effect or only some. There is a premium on router range, so some may be pushing the envelope on ERP. If it happens with many type of router, then there is an immunity issue. Someti

[PSES] Expert on regulatory requirements wanted

A US-based colleague is looking for an expert to advise on regulatory requirements for electrical safety and, if possible, fire for countries other than Europe and North America. If you can help, I will pass your email address to him. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa

Re: [PSES] Do it yourself safety reports?

If it's battery-powered, the LVD may not apply, so in turn there is no need to apply 60950. But I would advise applying it as far as possible. We don't want more battery fires, so that is one point to look at carefully; can the battery be short-circuited by a fault and if so, what happens? It's

Re: [PSES] Wi-Fi (WLAN) router approvals with psu

I don't think you can assume that. For example, your PSU might be able to deliver a larger current to a faulty router than the PSU it was tested with, resulting in a fire. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and

Re: [PSES] EMC Harmonized Standard for Construction Electrical Vibrator?

EN 55014-1 and -2 apply. 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: Mike Sherman - Original Message - [mailto:msherma...@comcast.net] Sent:

Re: [PSES] EMC Harmonized Standard for Construction Electrical Vibrator?

Apart from stuff above 9 kHz (emissions and immunity), 61000-3-2 and -3 apply. 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: Nyffenegger, Dave [mailto:d

Re: [PSES] Do it yourself safety reports?

eproduction, communication or distribution in any form) by persons other than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your co-opera

Re: [PSES] Do it yourself safety reports?

ree of charge about how we can help make Certifications easier and more cost effective. Best Regards, John John Allen | President Product Safety Consulting, Inc. Your Outsourced Compliance Department www.productsafetyinc.com <http://www.productsafetyinc.com> 630-238-0188 On Feb 1,

Re: [PSES] safety standard - mobile inverters

I don't think there is one. A search on the IEC web site shows IEC 61204-7:2016, which is not about inverters but might be sufficiently applicable. 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.

Re: [PSES] DoC when exempted from RED 2014/53/EU

The EU legislators didn't know about evaluation kits, so took a long time to make allowances for them. They probably do need a DoC for RoHS, simply because there seems no reason for an exemption. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.dem

Re: [PSES] safety standard - mobile inverters

7 9:03 AM To: John Woodgate Cc: EMC-PSTC@listserv.ieee.org Subject: Re: [PSES] safety standard - mobile inverters What about IEC 62109-2 with emphasis on standalone (i.e. not grid-connected)? Regards, Adam in Atlanta adam.di...@ieee.org <mailto:adam.di...@ieee.org> IEC 62109-2:2011 Saf

Re: [PSES] DoC when exempted from RED 2014/53/EU

'Being safe' with quite a loose interpretation thereof, because the users can be confidently taken to know what not to touch. Similarly for other hazards. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Raylei

Re: [PSES] DoC when exempted from RED 2014/53/EU

-1201 <mailto:p.perk...@ieee.org> p.perk...@ieee.org From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Thursday, February 2, 2017 4:55 AM To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> Subject: Re: [PSES] DoC when exempted from RED 2014/53/EU 'Being

Re: [PSES] Authorised Representative in EU

Is the Blue Guide entirely consistent with the current LVD and EMCD, which have a lot of detail about the responsibilities of bodies in the supply chain? I think the point about the TF not needing to exist until it's asked for is not explicitly stated, but is a logical consequence of what is sta

Re: [PSES] Authorised Representative in EU

igh England Sylvae in aeternum manent. From: john Allen [mailto:john_e_al...@blueyonder.co.uk] Sent: Thursday, February 2, 2017 7:22 PM To: 'John Woodgate' ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Authorised Representative in EU JW et al If I were an EU importer, authori

Re: [PSES] Authorised Representative in EU

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: Nyffenegger, Dave [mailto:dave.nyffeneg...@bhemail.com] Sent: Thursday, February 2, 2017 7:58 PM To: John Woodgate ; EMC-PSTC@LISTSERV.IEE

Re: [PSES] Authorised Representative in EU

equences" might ensue if that turns out to be insufficient in practice. ;) (now backing out of this thread as I doubt that it will actually establish much more than has already been said) John E Allen W. London, UK From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: 02 February 2017 20:13

Re: [PSES] DoC when exempted from RED 2014/53/EU

vae in aeternum manent. From: Pete Perkins [mailto:peperkin...@cs.com] Sent: Thursday, February 2, 2017 10:36 PM To: 'John Woodgate' ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] DoC when exempted from RED 2014/53/EU John, et al, My point, which I believe that I mad

Re: [PSES] RED and "putting on the market"

Products in the distribution chain (i.e. have left the manufacturer) can be sold 'for a reasonable time' after the deadline. What is 'reasonable' depends on the volume of sales and the average product lifetime. I do not know where, or even if, this is documented, but it was officially stated a l

Re: [PSES] RED and "putting on the market"

ott...@gmail.com] Sent: Saturday, February 4, 2017 3:05 PM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] RED and "putting on the market" When I participated in this field long time ago, all senior engineers taught me the same rule. I also encountered a number of cases

Re: [PSES] Acoustic Warning - sound pressure level

Microsoft should be using voice alarm, not sounders. This is the 21st century. 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: Ted Eckert [mailto:07cf6ebeab9d-

Re: [PSES] IEC 60320 adapter cable question

This company seems to make what you want (cord with C-15 plug), but I have no experience of them: http://www.stayonline.com/ With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeter

Re: [PSES] IEC 60320 adapter cable question

definitely worth a good look. Cheers, Adam On Mon, Feb 13, 2017 at 5:16 PM, John Woodgate mailto:jmw1...@btinternet.com> > wrote: This company seems to make what you want (cord with C-15 plug), but I have no experience of them: http://www.stayonline.com/ With best wishes D

Re: [PSES] IEC 60320 adapter cable question

ries that David mentions for mating with a C16 inlet ("notched C15" is the description on their site), but definitely worth a good look. Cheers, Adam On Mon, Feb 13, 2017 at 5:16 PM, John Woodgate mailto:jmw1...@btinternet.com> > wrote: This company seems to make what you

Re: [PSES] LVD EMC and High voltage SMPS

That sort of product is ahead of the standards development. Clearly, the HV part must be demonstrated to be safe. Notified Bodies don't exist in this context, but you would do well to go for third-party assessment by a major test house. With best wishes DESIGN IT IN! OOO - Own Opinions Only

Re: [PSES] EMC for aftermarket vehicular electronics

It appears so, but the automotive scene is still not entirely free of grey areas. For instance, if the product is made or offered for sale by a vehicle manufacturer, even if solely as aftermarket, different rules seem to apply, or so some people say. With best wishes DESIGN IT IN! OOO – Own Opi

Re: [PSES] Co-located modules

OT story. I saw an official instruction for aircraft that specified a minimum separation of '5 nm'. Pretty close! 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

Re: [PSES] Co-located modules

alfred1520l...@gmail.com] Sent: Wednesday, February 15, 2017 8:40 AM To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Co-located modules Nautical miles? On February 14, 2017 11:48:13 PM PST, John Woodgate mailto:jmw1...@btinternet.com> > wrote: OT story. I saw an official instruc

Re: [PSES] Co-located modules

What is the purpose of the separation, anyway? Known effects of two close senders are cross-modulation and intermodulation, caused by the emission from one sender impinging on the non-linearity of the output stage of the other. But there is no way of specifying a distance (other than a trivial 1

Re: [PSES] Questions on RCB, RCCB and ELCBs

1. That's a really big question and the really big answer is too big for a mailing list. Search on the web for descriptions and/or comparisons. 2. The IEC standard is an international agreement. I suppose the GFCI is a US-only (or NA-only) specification. Fault currents are obviously half with 1

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