Limited Power Source - q.v., 2.5 and 6 of UL60950-1 Power on TNV wiring to a remote device cannot be considered LPS.
> -----Original Message----- > From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of > pat.law...@slpower.com > Sent: Wednesday, March 25, 2009 8:14 AM > To: Umbdenstock, Don > Cc: emc-p...@ieee.org > Subject: Re: PoE injectors > > Hi Don, > > What does 'LPS' mean in this context? > > Pat Lawler > EMC Engineer > SL Power Electronics Corp. > > "Umbdenstock, Don" <djumbdenst...@tycoint.com> wrote on 03/25/2009 > 07:23:54 AM: > > I have perused the IEEE 802.3af explanation on various web > sites and > > examined supplier specs. I came to the conclusion that > the injector > > should be LPS certified and marked as such. However, most of the > > injectors I have found by web search do not indicate LPS. > > > > Does anyone believe that a PoE injector does not require LPS > certification? > > If so, why not? > > > > Regards, > > > > Don Umbdenstock > > Manager Compliance Engineering > > > > Tyco Safety Products / Sensormatic > > 6600 Congress Avenue > > Boca Raton, FL 33487 USA > > Phone: 561.912.6440 > > djumbdenst...@tycoint.com - 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...@ptcnh.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
