In message <FCA549BE3ECF9D4CB8CB8576837EA4890A7255@ZEUS.cetest.local>, "ce-test, qualified testing bv - Gert Gremmen" <g.grem...@cetest.nl> writes >The reasons to limit harmonic currents are not all emc-related, > >and mostly power distribution related:
That is regarded as an EMC matter. The issue of absolute or proportional limits is complex. It's not just 'history' as such, although you might read IEC 61000-1-4 some time. Logic says that harmonic current limits for a given technology should be proportional to fundamental current, and indeed IEC 61000-3-12 is based on proportional limits, but that in turn demands requirements on source impedance (expressed as shot-circuit power) in order to control *voltage distortion*. -- This is my travelling signature, adding no superfluous mass. John M Woodgate - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@socal.rr.com> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
