So the Netonix still blows out the POE even with the PTC fuses? Have not used one so I don’t have any experience with it.
Mark > On Sep 17, 2018, at 3:30 PM, Forrest Christian (List Account) > <li...@packetflux.com> wrote: > > The netonix already has ptc fuses.... > > There is a reason why I switched to electronic overcurrent protection years > ago. > > On Mon, Sep 17, 2018, 2:14 PM Mark Radabaugh <m...@amplex.net > <mailto:m...@amplex.net>> wrote: > Chuck, > > We have had really good luck with putting PTC fuses in front of the POE power > on the Mimosa radios in order to avoid blowing the fuses in the rectifier > shelf when the gas tubes in the Mimosa short the POE. I’m thinking maybe > you want to look at putting some of those on the SS for the power coming from > the Netonix? Let the gas tubes (or whatever surge suppressor you are > using) short all the lines together and let the PTC fuse cut the power > briefly? Might be a little tricky to get the values right but might be able > to save the POE from blowing. > > Or talk Netonix into including them internally so that they survive a POE > short circuit. > > For those of you scratching your head… we routinely power Mimosa B5’s using > Packetflux DC injectors from the -48V rectifier. The surge suppression in > the B5’s will short the power supply during a surge event long enough to blow > the 2 or 5A telecom fuse. All the equipment lives but we have to go replace > the fuse - which we don’t want to do since it causes an outage until we get > there. The PTC fuse inline avoids the fuse blowing. > > > Mark > >> On Sep 17, 2018, at 10:33 AM, ch...@wbmfg.com <mailto:ch...@wbmfg.com> wrote: >> >> Surges cause the surge components to do their job, which is to short >> everything to ground. >> Netonix ports will blow if they are shorted. >> >> From: Josh Luthman <> >> Sent: Monday, September 17, 2018 6:58 AM >> To: AFMUG <> >> Subject: Re: [AFMUG] Surge suppression failure gigE APC HV >> >> Should only be 24v. Even if it doubled, should be OK on the radio and surge >> card. >> >> What's the Netonix problem? >> >> Josh Luthman >> Office: 937-552-2340 >> Direct: 937-552-2343 >> 1100 Wayne St >> Suite 1337 >> Troy, OH 45373 >> >> On Fri, Sep 14, 2018, 12:44 PM <ch...@wbmfg.com <>> wrote: >>> If the voltage was too high or had spikes it could certainly have done that. >>> Kinda the reverse of the Netonix problem. >>> >>> From: Josh Luthman <> >>> Sent: Friday, September 14, 2018 10:37 AM >>> To: AnimalFarm Microwave Users Group <> >>> Subject: Re: [AFMUG] Surge suppression failure gigE APC HV >>> >>> I replaced the POE, AP, and surge card on Tuesday. That's what fixed it >>> for sure. >>> >>> The AP is sitting here in the lab and doing gigabit for 3 days now, >>> happily. The POE and surge card are in the trash. >>> >>> I'm wondering if it's possible the POE fried all of those surge cards on >>> Saturday/Sunday/Monday/Tuesday. If that's possible? >>> >>> >>> Josh Luthman >>> Office: 937-552-2340 >>> Direct: 937-552-2343 >>> 1100 Wayne St >>> Suite 1337 >>> Troy, OH 45373 >>> >>> On Thu, Sep 13, 2018 at 2:21 PM, <ch...@wbmfg.com <>> wrote: >>>> You say you are inclined to think it is the POE. I presume that means the >>>> POE power supply. So try a new one. I am probably not understanding the >>>> situation. >>>> >>>> From: Josh Luthman <> >>>> Sent: Thursday, September 13, 2018 11:39 AM >>>> To: AnimalFarm Microwave Users Group <> >>>> Subject: Re: [AFMUG] Surge suppression failure gigE APC HV >>>> >>>> I have a thousand new POEs. What do you want me to try? >>>> >>>> >>>> Josh Luthman >>>> Office: 937-552-2340 >>>> Direct: 937-552-2343 >>>> 1100 Wayne St >>>> Suite 1337 >>>> Troy, OH 45373 >>>> >>>> On Thu, Sep 13, 2018 at 11:07 AM, <ch...@wbmfg.com <>> wrote: >>>>> Do you have a spare POE to try ? >>>>> >>>>> From: Josh Luthman <> >>>>> Sent: Thursday, September 13, 2018 6:10 AM >>>>> To: AnimalFarm Microwave Users Group <> >>>>> Subject: Re: [AFMUG] Surge suppression failure gigE APC HV >>>>> >>>>> Well there was no lightning or anything, beautiful weather. After >>>>> several cards I have to imagine it's the POE or the AP. We replaced >>>>> those two at the same time. >>>>> >>>>> Does it make sense the POE was doing something weird to fry them or more >>>>> sense the AP was pulling too many amps? AP seems perfectly fine in the >>>>> office for 36 hours, so I'm inclined to believe it's the POE. >>>>> >>>>> >>>>> Josh Luthman >>>>> Office: 937-552-2340 >>>>> Direct: 937-552-2343 >>>>> 1100 Wayne St >>>>> Suite 1337 >>>>> Troy, OH 45373 >>>>> >>>>> On Tue, Sep 11, 2018 at 2:51 PM, Chuck McCown <ch...@wbmfg.com <>> wrote: >>>>>> It resets immediately if it is going to reset. >>>>>> Sounds like it took a hit. >>>>>> >>>>>> From: Josh Luthman <> >>>>>> Sent: Tuesday, September 11, 2018 12:45 PM >>>>>> To: AnimalFarm Microwave Users Group <> >>>>>> Subject: Re: [AFMUG] Surge suppression failure gigE APC HV >>>>>> >>>>>> How long does it need to be cold for it to be self reset? The one I >>>>>> took down this morning looks perfectly clean and I can't get pins 7/8 >>>>>> through it. At this point I'm thinking the (AC) POE is the cause of all >>>>>> our issues (Cambium, so that pair is positive 24v and data). >>>>>> >>>>>> >>>>>> Josh Luthman >>>>>> Office: 937-552-2340 >>>>>> Direct: 937-552-2343 >>>>>> 1100 Wayne St >>>>>> Suite 1337 >>>>>> Troy, OH 45373 >>>>>> >>>>>> On Tue, Sep 11, 2018 at 10:47 AM, Chuck McCown <ch...@wbmfg.com <>> >>>>>> wrote: >>>>>>> Sure, you can also wash them with 90% isopropyl alcohol. That will >>>>>>> remove any water. Need to make sure there is no corrosion. >>>>>>> Wash out the jacks extra good too. >>>>>>> >>>>>>> If they have not had too large of a surge, they are totally self >>>>>>> resetting. >>>>>>> >>>>>>> From: Josh Luthman <> >>>>>>> Sent: Tuesday, September 11, 2018 7:25 AM >>>>>>> To: AFMUG <> >>>>>>> Subject: [AFMUG] Surge suppression failure gigE APC HV >>>>>>> >>>>>>> There's a cause and I'm pretty confident it's not the cards themselves. >>>>>>> >>>>>>> This weekend an AP started having eth link issues. Look at it and the >>>>>>> card/rj45 is full of water. Replaced the line. Problem returns about >>>>>>> 12 hours later. >>>>>>> >>>>>>> I plug in my continuity tester and pin 7 blinks quickly and fades away. >>>>>>> Headed up the tower now for a new AP and already did a new Poe (no >>>>>>> power until AP replaced). >>>>>>> >>>>>>> Is it possible the Poe/AP are damaging the surge card? We've gone >>>>>>> through 5-6 cards since Saturday, and I thought it was all water >>>>>>> related. It stopped raining on Sunday after card 3 + new line. >>>>>>> >>>>>>> Any other ideas? Can I wait a minute and reuse the dry cards, are they >>>>>>> self resetting (I tried power cycling the POE for 5 seconds with no >>>>>>> change) after a length of time? >>>>>>> >>>>>>> Josh Luthman >>>>>>> Office: 937-552-2340 >>>>>>> Direct: 937-552-2343 >>>>>>> 1100 Wayne St >>>>>>> Suite 1337 >>>>>>> Troy, OH 45373 >>>>>>> -- >>>>>>> AF mailing list >>>>>>> AF@af.afmug.com <> >>>>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>>>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>>>>>> >>>>>>> -- >>>>>>> AF mailing list >>>>>>> AF@af.afmug.com <> >>>>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>>>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> AF mailing list >>>>>> AF@af.afmug.com <> >>>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>>>>> >>>>>> -- >>>>>> AF mailing list >>>>>> AF@af.afmug.com <> >>>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>>>>> >>>>> >>>>> >>>>> -- >>>>> AF mailing list >>>>> AF@af.afmug.com <> >>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>>>> >>>>> -- >>>>> AF mailing list >>>>> AF@af.afmug.com <> >>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>>>> >>>> >>>> >>>> -- >>>> AF mailing list >>>> AF@af.afmug.com <> >>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>>> >>>> -- >>>> AF mailing list >>>> AF@af.afmug.com <> >>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>>> >>> >>> >>> >>> -- >>> AF mailing list >>> AF@af.afmug.com <> >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>> -- >>> AF mailing list >>> AF@af.afmug.com <> >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >> >> >> -- >> AF mailing list >> AF@af.afmug.com <mailto:AF@af.afmug.com> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >> -- >> AF mailing list >> AF@af.afmug.com <mailto:AF@af.afmug.com> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> > > -- > AF mailing list > AF@af.afmug.com <mailto:AF@af.afmug.com> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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