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? > > >
