nanog mailing list archives
RE: Online/double-conversion UPS economy/high efficiency modes?
From: "Joseph Chin" <l-nanog () iodi se>
Date: Thu, 6 Dec 2012 21:41:04 -0000
That is so old-school FUD re line-interactive vs double-conversion. Very much the tubeless vs tubed tire debate all over again. Buy well-engineered quality brand products (ie Emerson/Liebert, Schneider/APC) then it will be a non-issue. -----Original Message----- From: Mike [mailto:mike-nanog () tiedyenetworks com] Sent: Thursday, December 06, 2012 9:17 PM To: nanog () nanog org Subject: Re: Online/double-conversion UPS economy/high efficiency modes? 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-
Current thread:
- Online/double-conversion UPS economy/high efficiency modes? William Herrin (Dec 06)
- Re: Online/double-conversion UPS economy/high efficiency modes? Mike (Dec 06)
- RE: Online/double-conversion UPS economy/high efficiency modes? Joseph Chin (Dec 06)
- RE: Online/double-conversion UPS economy/high efficiency modes? Alex Rubenstein (Dec 06)
- Re: Online/double-conversion UPS economy/high efficiency modes? Seth Mattinen (Dec 06)
- RE: Online/double-conversion UPS economy/high efficiency modes? Alex Rubenstein (Dec 06)
- Re: Online/double-conversion UPS economy/high efficiency modes? Seth Mattinen (Dec 06)
- RE: Online/double-conversion UPS economy/high efficiency modes? Alex Rubenstein (Dec 06)
- Re: Online/double-conversion UPS economy/high efficiency modes? Mike (Dec 06)