In this Issue:
- 2023 Q1 management committee conference call
- EPSMA objects to porposal to disallow input voltage derating for power supplies
- New technical committee project proposals
- EPSMA presents to CENELEC TC-22X committee plenary meeting
- EPSMA's Manfred Schlenk presents at PCIM on USB-PD
Click the text for links
- Future Propulsion conference 1st/2nd March Solihull, UK
- Wide-Bandgap Developer Forum – 9 March 2023 Infineon on-line 9th March
- Embedded world Nuremberg 14-16th March 2023
- 2023 Applied Power Electronics Conference and Exposition (APEC) Orlando 19th March 2023
- EMV 28-30th March Stuttgart
- 2023 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) Venice, 29th March
- PCIM Nuremberg 9-11th May
Notes from the Secretariat
The Q1 2023 management committee meeting conference call was well attended as usual.
There were various dicussions about compliance issues including a recent statement by a test agency that equipment power supplies should not be specified with power derating at low mains voltages, their argument being that the product could be used worldwide and might be accidentally overloaded. The EPSMA position is that users take responsibility for their application and anyway a power supply will have overtemperature protection. The EPSMA has prepared a position statement which will be used to support its case as necessary. If left to stand, many AC input products on the market would have to be respecified for a lower power rating. Member SiQ is helping to keep the EPSMA informed of developments
The flammability rating of materials in power supplies was discussed, with standards traditionally allowing concessions for small material amounts. This has been removed in some standards but is believed to be reinstated. The EPSMA is monitoring the situation
Paul Lee for the secretariat presented to the plenary meeting of the CENELEC TC 22X committee to update them on EPSMA activities. The EPSMA is a liason organisation with CENELEC and monitors their announcements.
The TC is expecting to present a 'Statement of Work' for the proposed paper on EMI standards at the next MC meeting in May.
There is interest in the membership for papers on built-in materials issues and calculation methods to determine a product's carbon footprint. These will be progressed at the TC and decicisons taken at the next MC meeting whether these can be future TC projects.
Minutes for the meeting are available in the website members' area.
We have a ’Linkedin’ forum for members to use and a data base of UL non-conformances for members to log their observations. Contact the secretariat for more details.
CE Marking Issues forum
Remember we have a forum for issues members have with “CE” marking. If you would like to share problems (and resolutions!) With other members, please contact the secretariat with details.