Dear John, Thanks a lot of your advice! We do not have the failed report of EN 61000-3-3 in hand but can request from the supplier. Normally EN 61000-3-3 is adopted but when we queried why this product was used EN 61000-3-11 and responded the failure of EN 61000-3-3. On the surface, EN 61000-3-11 is for higher current consumption products but this one is much less than the limit of 16A for EN 61000-3-3 leading us to investigate further.
Regards, Scott On Mon, 28 Jan 2019 at 23:00, John Woodgate <j...@woodjohn.uk> wrote: > Products for use in the home or similar places are expected to comply with > 61000-3-3. It is recognized that the general public mostly won't find the > supply impedance easily (and it probably won't be low enough anyway). > Manufacturers are expected to sell non-compliant products as professional > equipment only, and professional installers can find the supply impedance > from the local network operator. > > Your best course of action, if you expect it to be sold to the general > public, is to modify the product so that it does comply with 61000-3-3. If > you can say which requirement of the standard it failed to meet, together > with its supply voltage and current ratings, people here may be able to > help you with ways to make it comply. > > Best wishes > John Woodgate OOO-Own Opinions Only > J M Woodgate and Associates www.woodjohn.uk > Rayleigh, Essex UK > > On 2019-01-28 14:50, Scott Xe wrote: > > We have a portable air conditioner that failed to meet EN 61000-3-3 but > met with EN 61000-3-11 with conditional connection. The compliance > conclusion is included a statement that "The appliance can be connected > only to a supply with system impedance no more than 0.4 ohms. In case > necessary, please consult your supply authority for system impedance > information." > > I have questions about this conclusion and looking for the advice from > customer's perspective. How can we expect the customers to ascertain their > supply with system impedance? Is it realistic to get this information from > supply authority at each country since the products will go to a couple of > EU member states? > > Thanks and regards, > > Scott > - > ---------------------------------------------------------------- > > 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.ieee-pses.org/emc-pstc.html > > 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. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) <http://www.ieee-pses.org/list.html> > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <sdoug...@ieee.org> > Mike Cantwell <mcantw...@ieee.org> > > For policy questions, send mail to: > Jim Bacher <j.bac...@ieee.org> > David Heald <dhe...@gmail.com> > > - ---------------------------------------------------------------- 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.ieee-pses.org/emc-pstc.html 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. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
