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
<[email protected] <mailto:[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 <tel:417.851.1107>
--
--
bp
part15sbs{at}gmail{dot}com
