Was hoping that Mr Woodgate would reply to this... See below.
R/S, Brian > -----Original Message----- > From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of John > Woodgate > Sent: Friday, November 06, 2009 11:13 PM > To: emc-p...@ieee.org > Subject: Re: Market survey on EuP, regulation 1275 > > In message <003001ca5f37$d6bbc3b0$d600a...@tamuracorp.com>, > dated Fri, 6 > Nov 2009, Brian O'Connell <oconne...@tamuracorp.com> writes: > > >First quote: > >"(11) In order to prevent unnecessary losses of energy, > >products should > >ideally enter into a "0-Watt" consumption state when providing no > >function. The technical feasibility and appropriateness should be > >considered on a product-by-product basis in the relevant > implementing > >measure pursuant to Directive 2005/32/EC." > > > >So I make the inference is that the device has a mechanical > >disconnect > >that opens the connection from mains to interrupt all ac > >current flow > >to the device. > > No, the quotes around "0 watt" are 'crossed fingers' meaning that it > isn't necessarily quite zero, as we find out in later text. I also have inferred this meaning, but experienced engineers from Notified Bodies do not always agree. > >Second quote: > >'''6. "off mode" means a condition in which the equipment > is connected > >to the mains power source and is not providing any function; the > >following shall also be considered as off mode: > >(a) conditions providing only an indication of off-mode condition; > >(b) conditions providing only functionalities intended to ensure > >electromagnetic compatibility pursuant to Directive > >2004/108/EC of the > >European Parliament and of the Council [2];''' > > > >So I then make the the assumption that current flow from > >mains is not > >interrupted for 'off' mode; and that this 'off' mode is a > >lower power > >consumption mode than 'standby'. > > Yes: this is because an EMC filter may be upstream of the mechanical > switch, and it also allows a very low-power illumination of an 'OFF' > indicator. If this does denote a specific construction, then my little mind needs that/those condition(s) to be well defined. My engineering and marketing managers may be on the verge of a homicidal act if I cannot come up with a clear and non-ambiguous set of requirements for EuP conformity. > >Third quote: > >"Off mode : 0 W-0,3 W with hard-off switch on the primary side, > >depending, inter alia, on the characteristics related to > >electromagnetic compatibility pursuant to Directive 2004/108/EC." > > > >Finally, I note that the 'off' mode does, in fact, require > > a mechanical > >disconnect from mains. And note the 'inter alia' - so this > >means that I > >get to make this up as I go ? > > It isn't wise to use Latin these days. 'Inter alia' means > 'among other > things', and one of those 'other things' (i.e. apart from > any EMC filter > upstream of the mains switch) is the low-power illumination > I mentioned above. My cousin, an Irish barrister (a shameful part of the family, most assuredly), says that 'Inter alia' could be a list in the master document, or a reference to the record of a formal proceeding,. Stupid me - I thought it literally meant 'among other things'. Mr. Woodgate's contextual reference makes a little more sense. > >Oh, do not forget the section that says that there can be >> yet another, > >non-named mode, when standby or off is not appropiate - left as an > >excercise for the reader to find... > > This refers to stuff that has to be on all the time to perform its > function, such as a clock or an antenna amplifier. Is this different from 'providing a function' ? > -- > OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk > John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK > Help stamp out intolerance! It is still not clear to me that if an on/off switch is built in and the unit does not use an external power supply, and the unit is less than the max power consumption scoped, and the 'off' position of the input power switch results in zero current flow from mains, whether the unit conforms to the EuP Directive. Brian - Confused in California. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@socal.rr.com> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
