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>
--
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bp
part15sbs{at}gmail{dot}com
--
