Matthew From a legal perspective, is your product has WiFI functionality, it falls under the Radio Equipment Directive, RED.
* Currently there are no Harmonised EMC standards for RED article 3.1(b) * Currently the only Harmonised safety Standards for RED article 3.1(a) are some SAR/EMF standards. * The RED requires you to do a risk assessment * EN60950-1+A1+A2 is still a Harmonised Standard under the LVD until December 2020 should you wish to consider that in your assessment as being suitable for your application As you may already be aware, there have been several major safety investigations into on-line purchased wall wart power adaptors which found the vast majority to be unsafe as they didn’t meet fundamental Creepage/Clearance/Isolation requirements. My recommendation is that you satisfy yourself that the power supplies you physically purchase actually comply with a suitable standard (60950 or 62368) and are manufactured in accordance with the design that was put through safety testing (some have components removed/replaced to reduce cost) I know several companies who use UK UKAS labs to perform audit testing on samples from the batches they purchase, and the list of test performed would be something like * Visual inspection * Marking * Access to Energised Parts * Clearance and Creepage Distances * Mechanical Strength * Drop Test * Stress relief test * Touch current * Electric Strength * Abnormal Operation * Visual verification of safety critical components This is not an expensive process when weighed up against a product recall or the additional cost of, say, 1000 NRTL listed power supplies Regards Charlie Charlie Blackham Sulis Consultants Ltd Tel: +44 (0)7946 624317 Web: https://sulisconsultants.com/ Registered in England and Wales, number 05466247 From: Matthew Wilson | GBE <matthew.wil...@gbelectronics.com> Sent: 24 October 2019 22:38 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Power supply 60335 or 60950... Thank you all for your replies, much appreciated. I do offer apologies for the use of ‘jack plug’ and ‘jack socket’ which of course suggests a non-suitable connector akin to ‘headphone jack’. Quite righty as pointed out not a good idea at all. I remember a long time ago wrecking a Sinclair ZX81 which had such a jack socket for power. And the same sort for connecting to the tape recorder. The power supply will use the more usual circular DC 2.1mm dia. power connector and socket on the device. They happen to be called ‘DC Jacks’ within our sphere which I mangled in my original email. The product doesn’t have to work with a phone, it has manual input buttons on it too. The consumer would miss out on some features by not using the 'app'. I agree 62368-1 is more appropriate as it is now the state of the art but commercially when ‘wall wart’ power supplies are at the price they are being offered for a product that will sell out before December 2020 it seems use of the ‘current’ 60950 or 60335 standards will overrule the correct compliance engineering! Anyway I have put that to the potential vendors regarding 62368-1. The question still remains, I guess, that is a power supply to 62368-1 right for household use over 60335-1? Thanks [cid:image001.png@01D58B04.B60D1B60] Disclaimer: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please delete it from your system, do not use or disclose the information in any way and notify the sender immediately. The contents of this message may contain personal views which are not the views of the company, unless specifically stated. GB Electronics (UK) Ltd is a company registered in England and Wales under number 06210991. Registered office: Ascot House Mulberry Close, Woods Way, Goring By Sea, West Sussex, BN12 4QY. - ---------------------------------------------------------------- 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<mailto: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<mailto:sdoug...@ieee.org>> Mike Cantwell <mcantw...@ieee.org<mailto:mcantw...@ieee.org>> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org<mailto:j.bac...@ieee.org>> David Heald <dhe...@gmail.com<mailto: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>
