no, will try- On Wed, Oct 7, 2015 at 4:27 PM, Josh Baird <joshba...@gmail.com> wrote:
> Have you tried isolating the PTP600 with a DC/DC converter (Meanwell RSD, > etc) in between the rectifier and PIDU? > > On Wed, Oct 7, 2015 at 4:24 PM, Gino Villarini <ginovi...@gmail.com> > wrote: > >> ill check, but we did a bench test and it did not replicate the issue >> >> On Wed, Oct 7, 2015 at 4:19 PM, Chuck McCown <ch...@wbmfg.com> wrote: >> >>> If you put the PIDU and PTP600 on a cardboard box or other insulating >>> surface, can you see –48 VDC on their cases or chassis? >>> >>> *From:* Gino Villarini <ginovi...@gmail.com> >>> *Sent:* Wednesday, October 07, 2015 2:17 PM >>> *To:* af@afmug.com >>> *Subject:* Re: [AFMUG] Issue with a -48 vdc Site! ground loop? Please >>> Help!! >>> >>> i think so, afaik is floating ground >>> >>> On Wed, Oct 7, 2015 at 4:15 PM, Chuck McCown <ch...@wbmfg.com> wrote: >>> >>>> Is the chassis of the PIDU or the PTP600 connected to your common >>>> ground? >>>> >>>> *From:* Gino Villarini <ginovi...@gmail.com> >>>> *Sent:* Wednesday, October 07, 2015 2:14 PM >>>> *To:* af@afmug.com >>>> *Subject:* [AFMUG] Issue with a -48 vdc Site! ground loop? Please >>>> Help!! >>>> >>>> So we are moving a site form AC to DC -48 >>>> >>>> this is the setup: >>>> >>>> Emerson Rectifier feeding: >>>> >>>> Telco System MPLS router >>>> Planet Fiber SW >>>> 2 Netonix DC Switches >>>> 2 SAF POE Injectors >>>> 2 PTP600 PIDUs >>>> >>>> AFAIK all the mentioned gear above are floating ground >>>> >>>> We have this gear connected to the Netonix: Airfiber24, Epmp, PMP450 >>>> >>>> all wireless gear is using shielded cable that is terminated in a WBMGF >>>> SS on the rack >>>> >>>> So this is the issue, we migrated everything to DC, when we connect the >>>> PTP600 PIDU to the rectifier, the fuse on the emerson output feeding the >>>> Netonix blows..not instantly.. it takes some 30-45 secs.. >>>> >>>> im scratching my head on this one... any ideas? >>>> >>>> >>>> >>> >>> >> >> >
