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Thread ID: 124859	2012-05-24 00:26:00	How long do your UPS batteries last, and what is your preferred/recommended brand?	Billy T (70)	Press F1

Post ID	Timestamp	Content	User
1277022	2012-05-29 01:53:00	Once again you show you don't really know what you are talking about when you compare the batteries a telco uses and an UPS battery . Once again you make empty accusations due to insufficient electrical knowledge . Posting nasty is how the least informed seek respect . You made claims without a single citation . And now want citations for challenges to empty accusations, no numbers, no facts, and outright denials? As if the word "dribble" proves disparaging comments can replace knowledge . APC discusses the posted UPS weaknesses in "UPS or no UPS" on 10 Dec 2008: APC's Back-UPS line is designed for use with Computer-type loads only . They are not designed to be used with motor loads such as fish filters, air conditioning units, space heaters, vacuum cleaners or any other machinery . One potential issue is the inrush current draw for a motor . It can easily overload a Back-Ups UPS model . Secondly, these models of UPSs output a Stepped-Approximated sine wave when on battery . This waveshape, while ideal for computer-type equipment, is not particularly compatible with most motor loads . The result may be that motors run very slowly, erratically, or not at all when the UPS is on battery . APC did not mention destructive heating that can occur in a motor powered by that UPS . View what an electric utility says about a typical UPS output . Dranetz displays a UPS output when switching to battery power: . duke-energy . com/indiana-business/products/power-quality/tech-tip-03 . asp" target="_blank">www . duke-energy . com Common knowledge is among the fewer who actually learned this stuff . But not found when urban myths are posted as if knowledge . And without any citations . Some who do not learn facts and numbers will post an attitude . As if an attitude proves science . That UPS has one purpose . To provide temporary and 'dirtiest' power during a blackout .	westom (16792)
1277023	2012-05-29 03:12:00	Even noise generated by a nearby orchard can cause a UPS to switch to batteries :) Tell those apples to quiet down, my UPS is sleeping. Yes UPS are cheaply made, yes they don't put out true sinewaves, and no it's not important. They do what they are designed for well enough which is let you shut down your PC gracefully when the power is interrupted, that's it. Why you would care if an electric motor runs off them is beyond me.	dugimodo (138)
1277024	2012-05-29 09:33:00	Once again you make empty accusations due to insufficient electrical knowledge. Posting nasty is how the least informed seek respect. You made claims without a single citation. And now want citations for challenges to empty accusations, no numbers, no facts, and outright denials? As if the word "dribble" proves disparaging comments can replace knowledge. Well that is a load of dribble and a little narcissistic. I know enough not to compare an UPS battery with a deep cell battery as used in telcos or car batteries. You are the one that kept talking about dirty power when you should have been talking about the different sine waves. I have also known for years not to use an UPS designed for a PC to run any type of motor. You really do have a fixation with the idea that it is dirty power. It is not dirty for what it is designed to do full stop. That link you provided also left many unanswered questions.	mikebartnz (21)
1277025	2012-05-29 10:41:00	Which UPS brand / model did you opt for in the end Billy? Thanks BillyT for the software advice - I'd like to echo Chills question, curious which brand & model number you chose? Thanks	PeteS (12500)
1277026	2012-05-30 10:15:00	Thanks BillyT for the software advice - I'd like to echo Chills question, curious which brand & model number you chose? Thanks It is a Dynamix 1000HB 1000VA with three 12V 7AH batteries in series to give 36 volts to the inverter . That reduces the current drain to one third of that for a single 12 volt battery and ensures adequate power out without shortening the on-load run time to impractical levels . It is a genuine Dynamix, but in fact it is branded Digitech and was bought from Jaycar on run-out for $399 . If it had Dynamix on the front it would have cost me around $700! :D It had its first real-time test today too! We had a transient outage which made the flourescent lights in my office drop out and I heard the monitor UPS (a Dynamix UPS650) switch over and back, but the Digi-Mix (or Dyna-Tech) just sailed through without a murmur . The outage was long enough to have triggered a reboot on the old UPS, so I think my work here is done! One last word on dirty power: One of my primary occupational activities is investigating and sorting out power quality problems, and I am also commissioned from time to time to ensure that new buildings that require special attention to power quality are properly designed in the electrical sense prior to construction . There is not a hospital in Auckland that hasn't had Billy's hand in it, and I also check power systems and reticulation design for audio-visual sites as well (theatres etc) . So, since I have deluded myself into believing I know a little on this subject, be patient with me while I make one point clear: The output of a quasi-sinewave UPS is NOT 'dirty' power . Sure it is rich in harmonics, but it is entirely predictable in both voltage and frequency . It causes no problems for computers at all, though I wouldn't recommend it for audio system support because it might radiate some HF into the input stages, and it can also radiate enough harmonic noise to interfere with AM radio or even FM if your local signal is weak . Conversely, 'dirty power' is found in industrial areas and on commercial sites where there is a lot of inductive switching happening and heavy loads are going off-line and on-line at irregular intervals . This characteristic power usage pattern causes sags, swells and spikes on the supply and can also cause severe common-mode noise between neutral and earth, which in turn can cause a wide range of intermittent effects including data corruption and random shutdown of poorly designed equipment . That is dirty power . Lets hope that this puts to bed the myth of dirty power from consumer and low-end business UPS systems, but remember always, you get what you pay for, and some cheap UPS systems are hardly worthy of the name . Cheers Billy 8-{)	Billy T (70)
1277027	2012-05-30 10:40:00	It is a Dynamix 1000HB 1000VA with three 12V 7AH batteries in series to give 36 volts to the inverter. That reduces the current drain to one third of that for a single 12 volt battery and ensures adequate power out without shortening the on-load run time to impractical levels. It is a genuine Dynamix, but in fact it is branded Digitech and was bought from Jaycar on run-out for $399. If it had Dynamix on the front it would have cost me around $700! :D That is an UPS.:D but remember always, you get what you pay for, and some cheap UPS systems are hardly worthy of the name. So true and it applies to so many things. Just tested my Fenton last night and it is time for a new battery but it is over four years old so that doesn't surprise me. Worked a couple of months ago.	mikebartnz (21)
1277028	2012-05-30 11:19:00	:2cents: Just out of interest, many if not most high speed machine tool spindles, like grinding spindles, run happily on variable frequency inverters having stepped square wave approximations to a sine wave, ie "dirty" power, also pulse width modulated systems are used.	Terry Porritt (14)
1277029	2012-06-18 22:42:00	Just wanting jump in here....I've just replaced batteries on a Centerlion 800VA UPS that's on my server....it uses the winpower software - that while not perfect, I've got it set up fairly well for my needs. I'm looking and moving this UPS to my PVR to cover that machine and a router. So I'd be looking at a new one, and way the Dynamix 1000 that I saw a couple of you had, can this talk to winpower, or does it use something else? Ideally I would have liked both to use the same software for convenience sake.	psycik (12851)
1277030	2012-06-19 12:09:00	So I'd be looking at a new one, and way the Dynamix 1000 that I saw a couple of you had, can this talk to winpower, or does it use something else? Ideally I would have liked both to use the same software for convenience sake. I don't know anything about winpower, but the Dynamix uses UPSilon 2000, and I think APC has used that too, because I recall having an UPSilon CD floating around here in the past, and my old APC UPS has a serial port which could be used for automatic shutdown purposes. Cheers Billy 8-{)	Billy T (70)
1277031	2012-06-19 20:46:00	I had Winpower on my last UPS and don't like it at all.Couldn't get into it without an administrator password and it never seemed to save any changes I tried to do. But that may just be me! But Upsilon is just so easy to set up.	Neil McC (178)
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