[geeks] Deltect T2000 UPS

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I have online and standby UPSs from Gamatronic. My standby unit worked well for 3 years and started flaking out, one day it just dropped dead during one of our frequent power outages. Their service has been outstanding, including paying for shipment both ways and replacing batteries under warranty (I bought factory direct, I'm sure that helped). The standby model I bought is no longer made and although it was great while it lasted, they haven't been able to get it fixed the last time and it is now a doorstop. 

The online unit I have is from the GNET series. It has been working four years without a fault. I intend to buy another bigger GNET model when I get the cash for it. I'm very happy with the performance. 

Both the units I had give you plenty of time for a clean shutdown with a lot of equipment connected. I run 3 desktops and 3 screens on the standby unit and 2 Sun servers on the online unit and I've never had a problem. As usual, get more capacity than you think you'll need, breathing room is nice to have if your power is bad like ours is. 

------Original Message------
From: Andrew Jones
Sender: geeks-bounces at sunhelp.org
To: The Geeks List
ReplyTo: The Geeks List
Subject: Re: [geeks] Deltect T2000 UPS
Sent: 12 Mar 2012 16:29

On 03/08/2012 05:20 PM, Joshua Boyd wrote:
>
> That page is specific to the BackUPS product.  And that is why I always
> buy SmartUPS online UPSs instead.  Although, I notice they point out
> that only SmartUPS over 700va output a pure sine wave.  I've never
> bought a smaller one, but that would be good to remember.
>
> I could be wrong, but I figure that a SmartUPS online UPS is a pretty
> good power filter for AV equipment as well.
> _______________________________________________

There are basically three layers here:

1. Switching, unfiltered
Mains power, up until you go off battery, when you get a square wave.
Most cheapo UPSes are these.

2. Switching, filtered
Mains power, up until you go off battery, then you get a pretty good sin 
wave.  The expensive desktop units fit into this category.

3. Online
Run off battery all the time.  Usually get a sine wave.  These are 
common in the datacenter, and very rare as desktop or 1u/2u rackmounts. 
  Liebert makes some inexpensive small units (2U/desktop).
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