Hi Tom: Although I can't help clear the confusion in IEC 60601-2-47, there are some IEC 60601-2-x standards that require power line magnetic field testing at high levels. The one that I came across was IEC 60601-2-22 (safety of infusion pumps), which required 400 A/m. I can only assume they thought the system might be used near MRI machines when they wrote that clause.
Consider testing at 3 A/m *and* 1 Gauss (80 A/m) in case the higher test level is needed. Pat Lawler On Mon, 24 Oct 2011 21:02:09 +0900, you wrote: >I read IEC 60601-2-47 ed.1 (2001) clause 36.202.6 (magnetic field immunity), >and confused with the following sentense: > > The EQUIPMENT shall be exposed to a magnetic field intensity of 3 A/m > magnetic flux density of 1 gauss at three times the line frequency. > >Is the test level 3 A/m or 1 gauss or both of them? > >I think the level of 1 gauss (80 A/m in air) is pretty high and use >of the unit "gauss" is unusual, so I thought maybe this is mistake >or maybe I'm misreading it. > >Can anyone know something about this requirement? > >Regards, >Tom - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ 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...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
