Online/double-conversion UPS economy/high efficiency modes?
mike-nanog at tiedyenetworks.com
Thu Dec 6 21:16:53 UTC 2012
On 12/06/2012 12:49 PM, William Herrin wrote:
> Hi folks,
> I'm looking at several brands of rackmount 3kva double-conversion
> UPSes, such as Tripp Lite and Eaton Powerware. I'm specifically
> looking for something that will work as a line-interactive UPS until
> the power starts to misbehave and will then switch to
> double-conversion mode until a while after the last power bump.
I recently went to the tripplite 16kva online double conversion ups and
did note the increased ineffeciency. However, the financial cost of that
ineffeciency doesn't appear to be more than $40 - $60 / mo. So I am
wondering at your scale with only a 3kva model, really, what is the
final dollar cost to you versus the effort and dubious benefits of
writing scripts or depending on embedded logic to do the right thing?
The whole reason you have online double conversion vs line interactive,
is to have the best available protection, and when you are on line
interactive - even if it can switch - you are still taking that risk of
power issues that will jump your ups and hit your connected equipment
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