[ale] UPS

[Mike Harrison]

Depending on the exact models and configuration, the difference
is the Tripp-lite is live, the APC is in standby and must switch on.
That 'cross over' from line to inverter is the flicker...
that you won't get on the Tripp-lite because it is already live
and powering your stuff.

I like the Tripp-lite's for places with dirty unsteady power
but think it's probably overkill for most home use.
You are burning some kWh in the running live mode, not much, but 
measurable.. and the expectation is the Tripp-lite electronics
will be more reliable than the incoming power. A good bet, but the MTBF 
will eventually happen on either system.

My home server config are now an Asus RT-16 router running DD-WRT
with a small USB file share, and a repurposed Asus Atom based netbook
that does everything else (now running Bodhi and may try XBMCbuntu soon).
All the important computers are now laptops with their own batteries.

I don't even have a UPS at home... but I think if I ran one, I'd put a big 
one in the garage wired into a couple of specific circuit breakers.
I keep threatening to, even have the UPS's and never get around to it.
But I do have a propane genset :)













On Tue, 5 Feb 2013, gcs8 wrote:

> APC Smart-UPS 3000VA RM 2U LCD 120V SMT3000RM2U, dead quite compared to the rest of my rack.
> 
> 
> On Tue, Feb 5, 2013 at 10:27 AM, Derek Atkins <warlord at mit.edu> wrote:
>       gcs8 <gcsviii at gmail.com> writes:
>
>       > APC is my weapon of choice, just got a 3000va 2U for the rack at the house.
> 
> Which model?  I've got a 2U Tripp-lite with a 3U external battery which
> I'm enjoying in my home rack.  I seem to have about 240 minutes of
> backup time now.  Yay.  Only downside is that the 2U system has pretty
> loud fans -- it's much louder than anything else in the rack.
> 
> -derek
> 
> --
>        Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
>        Member, MIT Student Information Processing Board  (SIPB)
>        URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
>        warlord at MIT.EDU                        PGP key available
> 
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