Magnum mms1200, take a look On January 6, 2015 11:08:38 AM AKST, Ken Hohhof <[email protected]> wrote: >Another option is this: >http://www.tripplite.com/line-interactive-sine-wave-ups-system-.75kva-snmp-tower-usb-rs232-extended-runtime-100v-110v-120v~SMART750XLA/ > >I’ve had one at a tower site for a couple years with no problems. It >has a red/black PowerPole for external batteries if you want extended >runtime. The web mgmt card is a little funky and the fan runs all the >time, but otherwise it seems fine. Some people have stated it will >require human intervention if you run the batteries all the way down >but I have not tested if this is true. It does if I remember correctly >have a dual load bank feature that could be useful for remotely or >automatically shedding less critical loads. > >However Gino is wanting to run DC loads directly off the batteries. >I’m not sure any AC UPS is intended for that. > > >From: Gino Villarini >Sent: Tuesday, January 06, 2015 1:39 PM >To: mailto:[email protected] >Subject: Re: [AFMUG] 24V UPS > >Big sites ( 500 watts or more) we go Emerson. > >Great units! Mark pointed us that way... > >Smaller sites go APC, our situation is that many remote sites have >long power outages... 3-4 days sometimes > >Gino A. Villarini >@gvillarini > > > >On Jan 6, 2015, at 3:21 PM, Ken Hohhof <[email protected]> wrote: > > >Have you looked at Eltek and Emerson? Although Eltek seems to be >oriented around –24 or –48, and not so good for +24. Not familiar with >Emerson, Mark Radabaugh has posted they use them. > >I have an Eltek Micropack –48V system and the web and SNMP capability >is excellent. I did have one rectifier module fail, but it was pretty >painless given they are N+1 redundant. > > > From: Gino Villarini > Sent: Tuesday, January 06, 2015 1:15 PM > To: mailto:[email protected] > Subject: Re: [AFMUG] 24V UPS > >The problem with xl units it's the charger ... It has low amperage (5-8 >amps dep model) and don't maintain well big banks > >The idea is to have the xl with internal batt and have a big bank >connected to the external batt connector > >This bank will be isolated from the apc during AC operation. The bank >will have a good charger and will run 24 dc loads(still under >consideration) > > AC fails, the apc ups will see the big bank for extended runtimes > > Gino A. Villarini > @gvillarini > > > > On Jan 6, 2015, at 2:51 PM, Josh Baird <[email protected]> wrote: > > > Hmm, give us details when you get them regarding the XL! > > Josh > >On Tue, Jan 6, 2015 at 1:45 PM, Gino Villarini <[email protected]> >wrote: > > Chris > >Thanks for this compressive evaluation. We bought 2 Alpha/Cordex unit >for testing. We are in a similar spot, looking for a web managed power >system in 24 and 48 vdc. > > You saved us the expense of buying an ICT unit. > >That being said, we are looking into using a slightly modified apc xl >unit to run 24 dc direct from the UPS DC rail > > > Gino A. Villarini > @gvillarini > > > > >> On Jan 6, 2015, at 12:24 PM, Christopher Tyler ><[email protected]> wrote: > > >> I'm at my end. I've been looking at this for a while now and it's >obvious that no one makes an industrial APC UPS that works. > > >> We've tried the Alpha Cordex (DIN rail) and the ICT (19" rack) and >neither one can do what a APC management card can. We just need it to >provide 24vDC to a load and when the AC power goes out, send an alert >and let us monitor the system status via SNMP. > > > > Alpha: > > PROS: DIN rail mounted >> CONS: Web interface is IE only, SNMP requests are completely broken, >have not tested SNMP traps, cost is about $700. > > > > ICT: >> PROS: It works well as a dumb power supply/charger with UPS >functionality, web interface works in all browsers. >> CONS: SNMP is limited to about 6 values, all remote communication is >lost when AC is removed, no battery monitoring at all other than the >voltage for use with LV cutoff which is one of the values that is not >available via SNMP. Also costs about $700 > > >> I have to give it to Alpha at this point, at least their unit remains >"intelligent" when AC power is removed. If they would fix their web >interface and SNMP it would be perfect. > > >> So... Does anyone have a solution that works that isn't completely >cobbled together? I need to know when we lose/regain AC power, that the >battery is draining, what the battery voltage is so that I know when >it's about to cut off, it needs a LV cut off to protect the batteries, >and all this information needs to be available via SNMP and web. Am I >asking for too much or does something of this nature exist outside of >TrippLite and APC? > > > > -- > > Christopher Tyler > > MTCRE/MTCNA/MTCTCE/MTCWE > > Total Highspeed Internet Services > > 417.851.1107 > >
-- Sent from my Android device with K-9 Mail. Please excuse my brevity.
