Does all of the gear run on or have the feature of running on DC?
If so just do a more direct approach with DC supply/charger to fail over
in the event of ac failure.
On 1/20/2015 4:04 PM, Josh Luthman wrote:
I thought the same thing from my math but I think the old as hell UPS
must be very inefficient.
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On Jan 20, 2015 4:41 PM, "Ken Hohhof" <[email protected]
<mailto:[email protected]>> wrote:
It looks from the APC runtime graph that you should get 4 hours or
close with the internal battery:
http://www.apc.com/resource/include/techspec_index.cfm?base_sku=SU2200XL
You should be able to estimate runtime with different batteries
from the information on that page or linked from there.
*From:* Josh Luthman <mailto:[email protected]>
*Sent:* Tuesday, January 20, 2015 3:30 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] Bigger batteries for Smart UPS
70 watt load. I'd like to get 4 hours. 280 watt hours.
Josh Luthman
Office: 937-552-2340 <tel:937-552-2340>
Direct: 937-552-2343 <tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
On Jan 20, 2015 4:25 PM, "Gino Villarini" <[email protected]
<mailto:[email protected]>> wrote:
The 2200 is 48vdc iirc, for a 289 watt load It will be
inefficient... Better off with a 750xl
Gino A. Villarini
@gvillarini
On Jan 20, 2015, at 5:17 PM, Ken Hohhof <[email protected]
<mailto:[email protected]>> wrote:
APC charger is calibrated for AGM, doesn’t flooded require
different voltages? Maybe I’m wrong about that. Certainly
take out the internal AGM batteries, you don’t want batteries
of different chemistry in parallel. I’ve only done it with
external AGM, but as far as how you get to the right voltage
(I forget if 2200 VA is still 24V or that’s the point where
they started using 48V), I don’t think it matters if you put
2 x 12V or 4 x 6V in series to get 24V. I’m not sure you’ll
find 24 or 48V batteries, the choices are usually 2, 6 or 12
volt. Make sure to put a fuse in each series string of
batteries.
*From:* Josh Luthman <mailto:[email protected]>
*Sent:* Tuesday, January 20, 2015 2:50 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] Bigger batteries for Smart UPS
Charger but also just an APC with the management. So far
I've got two solutions: DC and APC. I'd rather avoid another
model or method to monitor.
Should I just load up on some decent size wet cell and wire
them up?
Josh Luthman
Office: 937-552-2340 <tel:937-552-2340>
Direct: 937-552-2343 <tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
On Jan 20, 2015 3:32 PM, "Ken Hohhof" <[email protected]
<mailto:[email protected]>> wrote:
I don’t have specific numbers for you, but I have
observed that family gets pretty inefficient if you run
it way below rated capacity. You seem to hit a wall as
you drop the load, like 200 watts for 4 hours, 100 watts
for 4 hours, 50 watts for 4 hours, no watts for 4 hours.
Especially if you are trying to push the runtime out to days.
Any reason you are using a 2200 VA unit for only 70W?
Instead of, say, a 700 VA unit? Wanting the faster charger?
*From:* Josh Luthman <mailto:[email protected]>
*Sent:* Tuesday, January 20, 2015 2:14 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* [AFMUG] Bigger batteries for Smart UPS
I'm getting a bigger unit - SmartUPS XL 2200 - and I'm
looking at batteries. I have an Interstate Batteries and
Batteries Plus near me so I'd like to go with either of
them.
This will be indoors. I'm aiming to get 280 watt hours
(70 watts, 4 hours) of run time. Is there any idea as to
the inefficiency of the whole AC/DC/AC/DC process?
What type of battery would be best? Should I look for
12/24/48v batteries or does it matter (besides having to
connect them in series)?
Josh Luthman
Office: 937-552-2340 <tel:937-552-2340>
Direct: 937-552-2343 <tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
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