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 <[email protected]> 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 <[email protected]> > *Sent:* Wednesday, October 07, 2015 2:17 PM > *To:* [email protected] > *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 <[email protected]> wrote: > >> Is the chassis of the PIDU or the PTP600 connected to your common ground? >> >> *From:* Gino Villarini <[email protected]> >> *Sent:* Wednesday, October 07, 2015 2:14 PM >> *To:* [email protected] >> *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? >> >> >> > >
