Hello Bruce and EMC-ESPC Group, The latest draft on next edition of (EN/) IEC 61800-3 is using the CISPR 11 Class A group 2 limits for power drive systems to be used in "Second environment" = Industrial use. The radiated emission limits are 40 dB from 30 - 230 MHz and 50 dB from 230 - 1000 MHz with 30 meter measuring distance. Those limits are derived from CISPR, 11 Table 5 - Electromagnetic radiation disturbance limits for Group 2 Class A equipment. So, someone (producers of power drive system?) do want to use at least a part of the CISPR 11 Group 2 Class A test for power drives. If some of you are interested in reading this new proposal you must get from your local IEC Committee, document reference: IEC/22G/73/CD.
Best regards Helge Knudsen Delta Electronics Testing, EMC Venlighedsvej 4, DK-2970 Hoersholm Telephone : +45 45 86 77 22 Fax : +45 45 86 58 98 >>> <bfag...@us.tuv.com> 15-11-00 06:07 >>> Since there are no comments on this so far, I thought I would put my 2 cents in.....It seems to me that motor drives would be in group 1, keeping in mind the first paragraph of appendix A where it says "for testing purposes the equipment is to be defined in terms of the purpose for which it was designed" Also, I believe the power drive system product family EMC standard, EN 61800-3:1996 uses limits similar to EN 55011 group 1(I don't have this standard in front of me so please correct me if I'm wrong.) I'm also curious why someone would want want to be in group 2 because this requires an additional magnetic field (table 5 of EN 55011) test down to 150khz that could be difficult for Power inverters. Bruce Fagley Sr. Specialist, in-situ EMC TUV Rheinland Newtown CT. 203-426-0888 ext 119 ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org