On Fri, 21 Aug 2009 07:42:14 -0700 (PDT), Wendy Nya <wendy...@yahoo.com> wrote:
> My company is deliberating to setup the IEC 61000-4-8 test with test > level up to 200 Gauss. We checked that the max permissible level based > on ICNIRP guidelines is 10 A/m2. I did some conversion and the results > came up to be only 0.2 A/m2. I think it is easier to apply ICNIRP reference level, which can be read as 400 A/m at 50Hz for occupational exposure. 200 Gauss is higher than the reference level, but I think you can establish the distance required to keep the field strength below the reference level, and then simply warn the users not to stay within the distance when testing. Even if the test level was up to 400 A/m, you should note that the field strength can be much higher near the coil anyway. Maybe the procedure can overestimate the exposure, but I think you can always be at safer side. Regards, Tom Tomonori Sato <vef00...@nifty.ne.jp> URL: http://homepage3.nifty.com/tsato/ - 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>
