How much enclosure do you put at these sites!? ___________________________ Mangled by my iPhone. ___________________________
Tyler Treat Corn Belt Technologies, Inc. tyler.tr...@cornbelttech.com<mailto:tyler.tr...@cornbelttech.com> ___________________________ On Jan 12, 2015, at 6:44 AM, David Milholen <dmilho...@wletc.com<mailto: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<mailto:part15...@gmail.com> Sent: Wednesday, January 07, 2015 9:51 AM To: af@afmug.com<mailto: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<mailto: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<tel:417.851.1107> -- -- bp part15sbs{at}gmail{dot}com -- [cid:part11.07000506.04070109@wletc.com]
