Hi Alkexandru,
There are several spects to this. I will elaborate on the specifications for a power supply (SMPS). Components and power supplies used to be incorporated into equipment are not subject to ce marking. This you concluded yourself. Now for safety you will need a declaration of conformity according to a EN/IEC standard compatible WITH YOUR END PRODUCT, probably issued by an European test house such as VDE NEMKO KEMA or other. For a PC supply you will need a EN 60950 compliance statement and for medical equipment you will need a EN 60601 compliant supply. Ask your manufacturer for a (partial)copy of the test report that list out the conditions under what the supply needs to be incorporated to fulfill safety requirements. This is very important as an open Frame power supply could NEVER meet the full requirements of EN 60950 f.a. , but incorperated in an open end product may inhibit approval of your end product. If your equipment enclosure fulfills fire enclosure requirements, then that would be no problem. Pay especially attention to terminals , open/closed enclosures en insulation class between mains and secondary. It needs to be compatible with your end product. It will not be easy to obtain such a copy as manufacturers are reluctant to give them. Now for EMC, the supply needs to be compatible with the EMC directive itself. This is what you will find in general in the datasheets. of course , here compatibility of the specs with your end product is required too. Most of the time a compliant power supply will not produce problems in itself for the approval of your end product (by it's proper emissions f.a.) The attenuation however, for emission currents originating from your proper electronics and transferred by the power supply to the mains supply may however, be unspecified as there exist no requirement for such. Most of the time they ARE unspecified, and may varie widely among supplies having virtually the same approval data. May even vary among different batches of the same product. Now what you really need is statements of compatibility (liability) with suitable standards (compatible with your end product). Most of the time these are IEC standard possibly in an EN variant. These statements are civil liability statements between you and the manufacturer and have no legal meaning in (EC) public right and are therefore (within national limitations) valuable all over the world. Then you will have to create THE Declaration of Conformity according to public law for Europe, based on the TCF for your product. Note the differences between civil and public legal aspects. if you are not familiar with it, ask a specialist. Due to the arguments earlier mentioned a private compatibility statement with suitable standards needs to be completed with additional purchase requirements, such as not modifying the product in such a way that it might impact the compliance of your end product (or at least don't allow to do that without notice) For this you need to specify what properties of the supply you are relying on for compliance of the end product. In order to correctly design the implementation you will probably need a copy of the test reports. Other OEM products may be easier to specify, however. Gert Gremmen ce-test, qualified testing -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Alexandru Guidea Sent: Wednesday, September 25, 2002 9:56 PM To: [email protected] Subject: subcontracted parts - compliance with EN's Importance: Low Dear colleagues, This questions might have been asked before. Still looking for answers... Our company purchases power distribution equipment designed per our specs. This equipment is not put on the market, but integrated in our products, and does safety/EMC functions(EMI filtering, protection, emergency stop) among other things, in accordance to the EC Directives applicable to our product. We believe there is no point to have it CE marked but only compliant with the standards we need. The text of the EMC Directive reads "the manufacturer may subcontract certain operations, e.g., apparatus design or production, provided that he retains overall control and responsibility for the apparatus as a whole. By the same token, he may use ready-made items or components, CE marked or not, to produce the apparatus without losing his status as a manufacturer." We follow the Technical Construction File route for CE marking. What's the documentation required from our sub-contractors that proves compliance with the EN standards we indicate? Do we need complete copies of test reports, technical description, analysis, or just a statement of compliance would do the job? What's the legal value of such a paper in North-America? As we don't control their production (parts, quality, etc,) what's the documentation we shall request to ensure all production units are compliant? What's the industry/your practice in this case? Alexandru Guidea CAE Inc. Montreal, CANADA ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
