What about the charging voltage put on the batteries ? Wouldn't that be higher ? Would they remove the batteries from equipment during this charging period ?
Don House wrote: > -46vdc to -56vdc with an average float of -52vdc in my 30+ years of Bell > System experience. > > Personally, I have never seen a C.O. voltage higher than -54vdc nor lower > than -48vdc. > (Except for a special -72vdc buss for range extension that is no longer > used.) > > Don > > Don Robert House, MTS > Excelsus Technologies, Inc. > (760) 476-1511 Office > (760) 476-1519 FAX > (760) 420-3016 Cellular > URL: http://www.excelsus-tech.com > > -----Original Message----- > From: Doug [mailto:dmck...@gte.net] > Sent: Thursday, June 08, 2000 9:33 AM > To: Nebs Discussion Group > Subject: The -48VDC CO rail ... > > Two questions ... > > 1. Would anyone care to relate personal experiences, > anecdotes, concerning the stability or non-stability > of the -48VDC rail in a CO? > > Just how bad is it? > > 2. I think I'm finally understanding the meaning of the > upper Bellcore range of 56 vdc. UL testing would require > +6% above 56 which puts it right at 60VDC. Any change > increasing the upper limit in the spec would push the > voltage into the hazardous voltage area ( >60VDC ) changing > all the test limits. Do I have that correct? > > Where'd the lower Bellcore voltage spec some from? > > Regards, Doug McKean
