Gert, interesting take on this and logical. I am certain that when the definition was formulated, protection of broadcast radio was the intent but this may be a case of where the technology that came afterwards changes the intent of the original definition.
Bob Heller 3M EMC Laboratory, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 ========================================================= "ce-test, qualified testing bv - Gert Gremmen" <[email protected]> wrote on 09/05/2010 09:30:55 AM: > [image removed] > > RE: Industrial Environment > > ce-test, qualified testing bv - Gert Gremmen > > to: > > reheller, emc-pstc > > 09/05/2010 09:31 AM > > The definition of EN 55022 effectively excludes > application of Class A for all environments where people are working and may > listen to radio. And I think that the definition of radio > should not be limited to broadcast radio, but include the > radio over the whole frequency scope of the standard, also > for professional communication, short range datacomms, cellular > and any other type of radio. > So if taken strict, nowhere….. > <Irony ON> > Application is possible only in machines larger than 20 meter cubic > in the center (10 meters from each edge) without any wireless > communication inside. > <Irony off> > > Gert Gremmen > ce-test, qualified testing bv > > Van: [email protected] [mailto:[email protected]] Namens [email protected] > Verzonden: vrijdag 3 september 2010 12:19 > Aan: [email protected] > Onderwerp: Industrial Environment > > What defines an industrial environment in Europe? > > EN 55011 defines Class A equipment as "equipment suitable for use in > all establishments other than domestic and those directly connected > to a low voltage power supply network which supplies buildings used > for domestic purposes." > > EN 55011 defines Class B equipment as "equipment suitable for use in > a domestic establishments and in establishments directly connected > to a low voltage power supply network which supplies buildings used > for domestic purposes." > > EN 55022 defines a domestic environment as "where the use of > broadcast radio and television receivers may be expected within a > distance of 10 m of the apparatus concerned." > > So would an industrial environment be anything not connected to the > public power mains and where the use of radio and TV would not be > expected within a distance of 10 meters? > > Bob Heller > St. Paul, MN 55107-1208 > Tel: 651- 778-6336 > Fax: 651-778-6252 > - > ---------------------------------------------------------------- > 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 < > [email protected]> > > 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 <[email protected]> > Mike Cantwell <[email protected]> > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[email protected]> - ---------------------------------------------------------------- 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 <[email protected]> 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]>
