That's definitely true. The times are usually detailed when you order them.
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Oct 8, 2015 12:06 AM, "George Skorup" <geo...@cbcast.com> wrote: > I remember Ken pointing out that even fast-blow fuses have a time delay. > If they're running right up around the limit, it does take time to open. I > think the last thing you want to do is put in a bigger fuse if you suspect > return path and/or polarity issues. Mixed voltages and -/+ return can > really be a PITA to figure out sometimes. I would second the suggestion for > popping in a Mean Well RSD if only to figure out if you have mixed chassis > grounds. Cat5 shields come to mind. Are you passing the shields through the > WB SS's? > > On 10/7/2015 10:41 PM, TJ Trout wrote: > > Does everything power normally prior to the fuse blowing? Does the ptp600 > power and ping? Is the fuse properly sized? > > On Wed, Oct 7, 2015 at 2:22 PM, David <dmilho...@wletc.com> wrote: > >> We have to use the duracom dc dc isolators for them but no issues once we >> do it. >> Basically same thing using meanwell product. >> >> >> >> >> On 10/07/2015 03:29 PM, Gino Villarini wrote: >> >> 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? >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>> >>>> >>> >> >> > >
