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Posted by Tom S on August 19, 2005, 9:15 am
If anyone knows of more relevant newsgroups to post this to, we'd
appreciate the info.
We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which
means the unit must not have any fans, buzzing noises etc while it's
operating, and above all else, must have an option to disable any
audible alarms it might have.
We've been searching for a month and haven't found anything so far.
Any help greatly appreciated,
Tom
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Posted by JANA on August 19, 2005, 8:36 am
On all of these UPS's, the inverter is going to make some type of noise. The
better ones that are able to put out more than about 400 Watts will have a
fan. Some allow you to disable the alarm. If not, you can wire a switch in
series with the alarm that is inside, if it is easily accessible, but this
will void the warranty.
What we do in the sound and production studios, is that we locate the UPS's
in another room with the computers. The computers all have fans in them, and
are also noisy. We have the monitors, keyboards, and mouse's extended with
Cybex boxes, or the equivalent. If you want the computers in the same room,
you can always have the UPS's in another room, and run AC extensions through
the walls.
--
JANA
_____
If anyone knows of more relevant newsgroups to post this to, we'd
appreciate the info.
We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which
means the unit must not have any fans, buzzing noises etc while it's
operating, and above all else, must have an option to disable any
audible alarms it might have.
We've been searching for a month and haven't found anything so far.
Any help greatly appreciated,
Tom
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Posted by Kalman Rubinson on August 19, 2005, 9:58 am
I have a pair of APC S-15s which are dead silent on standby and on
battery. The alarm is defeatable but the fan does operate very
briefly at switch on and change-over to battery as part of the
diagnostic operations. Other than that, silent and cool-running.
Kal
wrote:
>If anyone knows of more relevant newsgroups to post this to, we'd
>appreciate the info.
>
>We're trying to find an uninterruptible power supply (~1000VA or
>more) for a quiet environment (residential living room). Which
>means the unit must not have any fans, buzzing noises etc while it's
>operating, and above all else, must have an option to disable any
>audible alarms it might have.
>
>We've been searching for a month and haven't found anything so far.
>
>Any help greatly appreciated,
>
>Tom
>
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Posted by CL (dnoyeB) Gilbert on August 19, 2005, 10:09 am
Tom S wrote:
> If anyone knows of more relevant newsgroups to post this to, we'd
> appreciate the info.
>
> We're trying to find an uninterruptible power supply (~1000VA or
> more) for a quiet environment (residential living room). Which
> means the unit must not have any fans, buzzing noises etc while it's
> operating, and above all else, must have an option to disable any
> audible alarms it might have.
>
> We've been searching for a month and haven't found anything so far.
>
> Any help greatly appreciated,
>
> Tom
>
>
I use Cyberpower's OP850. its got boost and buck, windows and linux
software. Simulated sinewave. They have larger models and probably
different lines that have true sinewave if you need that, but since
computers run on DC it shouldnt be an issue. Alarms can be disabled
through software, and can be tested through software. The 1500 has a
hardware test button.
Its dead silent when running on a/c, i havent tested it when running on
battery. You probably want the OP1250. check www.pricewatch.com or
www.pricegrabber.com. Got mine from www.newegg.com
--
Respectfully,
CL Gilbert
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Posted by Doug on August 19, 2005, 10:26 am
@newsread2.news.pas.earthlink.net:
> We're trying to find an uninterruptible power supply (~1000VA or
> more) for a quiet environment (residential living room). Which
> means the unit must not have any fans, buzzing noises etc while it's
> operating, and above all else, must have an option to disable any
> audible alarms it might have.
Do you mean no noise while it's on battery? If so, that's asking a lot.
Just how bad is your power that it's going to matter? I've never seen one
that's silent on battery and if one does exist it's probably going to be
extremely expensive. Low end units buzz, high end units have fans.
The ability to disbable the audible alarm should be easy to find in any
configurable UPS. Something like the APC SmartUPS or BackUPS series.
Probably not the super cheap ones you see around so much. The BackUPS RS
is available in 1000 and 1500VA models. The SmartUPS are a little better
since they have sine wave output.
Putting the UPS in a closet or something would be your best bet if it must
be silent at all times.
Doug
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