John Sorry to disagee but you have made a remarkable leap of faith. You have assumed that it will not be intended for other than a commercial/light industrial environment. This is where the problems arise for Test Houses giving advice, it is not just the product but the intended environment as well. What if it is to form part of a PLC on a chemical site or in a rolling mill or even on the railway. There is no cut and dried answer, product specific is not necessarily the answer. I have told my suppliers/manufacturers what their environment is and what tests are required only to have them come back and say they only need to meet the product standard, the test house says so. Invariably I find when I talk to the test house the manufacturer has not given the whole story. The final judgement is the manufacturers to determine his market and then get the advice not make a general enquiry.
Regards Ray Garner > Message date : May 04 2004, 10:05 PM > From : "John Woodgate" > To : [email protected] > Copy to : > Subject : Re: What does the CE mark mean for EMC > > I read in !emc-pstc that Jayasinghe, Ryan wrote (in > <[email protected]>) about 'What > does the CE mark mean for EMC' on Tue, 4 May 2004: > > Let's say I have an Information Technology Product (for example > > 230VAC 3A and say Unshielded Twisted Pair ports no telecom > > connection to outside lines), and I pick the EMC directive and the > > LVD for the product standards. > > > > How does one go from the EMC directive to the different 61000-4-x > > tests? > > You need to go to the ***product standards***. > > EN 55022 for general EMC emissions > EN 55024 for EMC immunity > EN 61000-3-2 for low-frequency conducted emissions > EN 61000-3-3 for voltage changes imposed on the mains supply > > The first two standards explain which Basic Standards in the 61000-4- > series shall be applied to ITE, and include a vast amount of additional > information on exactly how the tests shall be performed. The third and > fourth refer to EN 61000-4-7 and EN 61000-4-15 respectively. > > EN 60950-1 is the Product Standard for safety > > > > I have not got a satisfactory answer from the test labs I have > > used. > That's VERY disturbing. They seem to be misleading you, which is very > reprehensible. > -- > Regards, John Woodgate, OOO - Own Opinions Only. > The good news is that nothing is compulsory. > The bad news is that everything is prohibited. > http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ieee-pses.org/ > > 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://www.ieeecommunities.org/emc-pstc > _____ Whatever you Wanadoo <http://www.wanadoo.co.uk/time/> This email has been checked for most known viruses - find out more here <http://www.wanadoo.co.uk/help/id/7098.htm>
