I hope that Edgepoint doesn’t fry if the input is 1 or 2 volts
above 54 VDC.
If it sees the unregulated battery string voltage, normally you
want an upper limit of 56 volts. 60 would be even better.
*From:* AF <af-boun...@af.afmug.com>
<mailto:af-boun...@af.afmug.com> *On Behalf Of *Adam Moffett
*Sent:* Thursday, December 19, 2019 2:25 PM
*To:* af@af.afmug.com <mailto:af@af.afmug.com>
*Subject:* Re: [AFMUG] Outdoor UPS
I could live with either AC or 48V, but 48V would be convenient.
I'm looking at the Ubiquiti EdgePoint EP-S16. It takes a 54V DC
input, has SFP+ uplink ports and twelve 802.3af/at ports. I
don't actually expect to use every port, but in theory you could
load that up to over 300W, and if I make sure to size the UPS for
the switch then it's more idiot proof when people come along and
add stuff.
Ubiquiti has a 54V UPS module now, and you can put in 2+0 150W
power supplies for 300W total, but it's an indoor case and
operating temp only down to 0c. By the time I put that in a
heated outdoor box it doesn't look too attractive anymore.
I'm very familiar with the Traco and similar products. It would
just be hard to beat $650 for a complete system using modular DIN
components in a box. There's also something to be said for the
simplicity of one part on the BOM.
Of course I could use the smaller EdgePoint, but then I don't
have the 10Gig uplink.
I'm checking with Cyberpower on what happens in an overload
condition...maybe the guy who adds one AP too many will realize
his mistake very quickly.
-Adam
On 12/19/2019 3:05 PM, Ken Hohhof wrote:
You are looking at 48VDC output, or AC with a 48V battery string?
Note that unit seems to have around 700 watt hours of
batteries, not bad, but if you are running 300W or 600W of
loads, it’s not going to give you much runtime without adding
more batteries.
We have a couple Alpha Micro350 systems at some small sites,
which looks physically similar, but that’s AC output. We
only use them at small sites because it’s not enough
batteries for a large site. Normally we would put a Traco
TSP BCM48 and a TSP360-148 or TSP600-148 in the same
enclosure with our other DIN rail equipment and maybe a bunch
of 100 Ah batteries in a separate battery box. Or maybe 4 x
22 Ah batteries in the same enclosure, if we don’t need a lot
of runtime.
*From:* AF <af-boun...@af.afmug.com>
<mailto:af-boun...@af.afmug.com> *On Behalf Of *Steve Jones
*Sent:* Thursday, December 19, 2019 1:33 PM
*To:* AnimalFarm Microwave Users Group <af@af.afmug.com>
<mailto:af@af.afmug.com>
*Subject:* Re: [AFMUG] Outdoor UPS
hes building out UPS in a box
On Thu, Dec 19, 2019 at 1:30 PM Adam Moffett
<dmmoff...@gmail.com <mailto:dmmoff...@gmail.com>> wrote:
Is there a particular item I should ask him about?
On 12/19/2019 2:22 PM, Steve Jones wrote:
talk to matt at CTI
On Thu, Dec 19, 2019 at 12:27 PM Adam Moffett
<dmmoff...@gmail.com <mailto:dmmoff...@gmail.com>> wrote:
https://www.cyberpowersystems.com/product/fttx/outdoor/cs150u48v3/
I tripped over this guy the other day. They're
$650-700 retail and
frankly, that's really not a bad price for a
one-and-done 48V outdoor
power system.
<whining>
....but 150W is pretty small. I wish there was a
300W or 600W option.
Why does it seem like every product I want is a
white whale and that
every vendor has something that's like 90% of the
way there, but not
quite perfect?
</whining>
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