My thoughts as well, Eltek is pretty solid stuff. Minipack setups can be found surplus for around $1200 - at least last time I checked.
On Monday, January 12, 2015, Josh Baird <joshba...@gmail.com> wrote: > If I were spending 2k, I believe I would be looking at a rectifier based > solution (from Emerson, Eltek, etc). Not only would it probably be a bit > cheaper, but it would all fit in 1-2U of rack space. > > On Mon, Jan 12, 2015 at 7:44 AM, David Milholen <dmilho...@wletc.com > <javascript:_e(%7B%7D,'cvml','dmilho...@wletc.com');>> wrote: > >> This is the portfolio I have used for 11 years.. >> >> http://duracomm.com/siteresources/apps/catalog/shop/prodView.asp?idproduct=495 >> >> http://duracomm.com/siteresources/apps/catalog/shop/prodView.asp?idproduct=174 >> >> http://duracomm.com/siteresources/apps/catalog/shop/prodView.asp?idproduct=180 >> >> http://duracomm.com/siteresources/apps/catalog/shop/prodView.asp?idproduct=349 >> >> I have used all of these stacked in several of our cabinets depending if >> we are running ptp800 at that site. >> The total cost for a +48v,-48v,2x 24v and distribution is around $1800 >> and with batteries its about $2900 >> Thats a full blown site. >> If you just need +24v its about $1600 to $1800 depending if you need a >> separate supply for isolating the routers and switches. >> >> Everything else I have ever tried or looked into is either too expensive >> or doesnt last. >> I have ever only replaced one 24v supply due to lightning which was a >> direct hit on the system. >> It let the smoke out :) >> >> >> <http://duracomm.com/siteresources/apps/catalog/shop/prodView.asp?idproduct=349> >> On 1/7/2015 9:57 AM, Ken Hohhof wrote: >> >> I wish everything would happily run on 29 volts like the Cambium stuff. >> >> Phoenix Contact has some DIN rail UPS gear that puts out regulated 24V >> when on commercial power, but raw battery voltage when on batteries. So >> what good is that? >> >> >> *From:* Bill Prince >> <javascript:_e(%7B%7D,'cvml','part15...@gmail.com');> >> *Sent:* Wednesday, January 07, 2015 9:51 AM >> *To:* af@afmug.com <javascript:_e(%7B%7D,'cvml','af@afmug.com');> >> *Subject:* Re: [AFMUG] 24V UPS >> >> Yes, there is temp compensation, but not that important to me with the >> sites we're putting it in. The load is isolated from the batteries, which >> is why it can do multi-stage charging (recovery/boost/float). However, >> based on the literature, the load voltage will follow the battery voltage. >> We do use a Traco to knock that down to 24V for some devices like MT and >> UBNT. >> >> So I am trying these out. Will let the group know after I have some >> experience with them. >> >> bp >> <part15sbs{at}gmail{dot}com> >> >> >> On 1/6/2015 7:56 PM, George Skorup (Cyber Broadcasting) wrote: >> >> What about temperature compensation? And is the output regulated or is it >> essentially parallel operation and you get battery float voltage? I went >> with the Traco because the temperature compensation is one thing that I >> absolutely need. And I can handle the unregulated voltage with an RSD. For >> smaller sites/micro POPs, now I'm just throwing in Mean Well AD-155's. No >> temp. comp. but I'm not all that worried about those because they're not >> supporting hundreds of $$ worth of batteries that I'd like to last. So far >> they have not severely overcharged batteries like the APC UPS's do in only >> a few months, so I'm happy with that. >> >> On 1/6/2015 5:04 PM, Bill Prince wrote: >> >> We just got a couple of the 24V versions and it was only $300 each. >> About the same as the Traco for the two separate units. I sure appreciate >> the differences, but I was looking for extra-small form factor on a DIN >> rail. Because this site is on AC power 99.99% of the time, it's not a big >> deal (to me) if it takes 24 or even 48 hours to get a full charge. IIRC, >> these units also have LVD. >> >> bp >> <part15sbs{at}gmail{dot}com> >> >> >> On 1/6/2015 10:26 AM, George Skorup (Cyber Broadcasting) wrote: >> >> Those are really expensive. A Traco TSP+BCM is several hundred less at >> almost every wattage, last time I looked anyway. I like the split power >> supply and battery module. A lot cheaper to replace a failed component than >> an entire $700-1k all-in-one. But that's just me. The Traco gets you >> temperature compensated charging and LVD. You get contacts for DC input OK, >> batt OK/fail, etc. Hook that up to a SiteMonitor switch closure module and >> you have pretty good remote visibility. Put shunts wherever you want to >> monitor, battery charge/discharge current, output rail current, etc. >> >> On 1/6/2015 10:49 AM, Bill Prince wrote: >> >> Try these. We are about to install a couple of them. Some models have >> ethernet ports for a GUI (no SNMP :-( ). But they do have contacts to send >> alerts through a SiteMonitor (for example). >> >> http://www.altechcorp.com/power/CBI-UPS.html >> >> On Tue, Jan 6, 2015 at 8:23 AM, Christopher Tyler < >> ch...@totalhighspeed.net >> <javascript:_e(%7B%7D,'cvml','ch...@totalhighspeed.net');>> 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 >>> >>> >> >> >> -- >> -- >> bp >> part15sbs{at}gmail{dot}com >> >> >> >> >> >> >> -- >> > >
