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 anyways. Mike-