Was all set to get :
APC Back-UPS BR900GI Line-interactive UPS - 900 VA/540
But then found this review on the forest:
"3.0 out of 5 stars Godd functionality - but noisy, December 1, 2011
By Persson Johan (Sweden) - See all my reviews
(REAL NAME)
This review is from: Back-UPS BR900GI Line-interactive UPS - 900 VA/540 WTower (Accessory)
This is a UPS that does what it is supposed to do - protect from power outage. The ratio of size/performance is pretty good and you can expect at least ~14 min runtime even on a really powerfull WS with dual monitors and a NAS attached even when the battery is not completely new.
However, you should be aware that the UPS is not silent. It has a fairly high "hissing" sound. In addition the sound is not completely even, the frequency of the sound changes slightly as the UPS drop-charges the lead battery (when it is fully charged - which is the normal case).
If you are sensitive to noise it might not be the best idea to have this at the side of the desk.
The cost has been reduced to this level since it will not produce a pure sine wave output. Beware that this might make it incompatible with some newer power supplies that frawn upons the step-approximated sine curve that is output.
Pro:
- Great power/size ration
- 8 outlets (4 battery backed up/ 4 surge protection only)
- Easy to replace battery - no cables to (de)attach
- There are a great open source linux daemon to act on UPS events
Cons:
- Fairly loud hissing noise
- No APC supplied SW for a linux server
- No pure sine wave output which might make it incompatible with some power supplies, be aware - worst case it will no be able to power your computer at all!!
Update:
- Atfer roughly a month of usage the device has quiet down for some reason to the point where it is barely noticable. I hope this change is here to stay. For this reason I'm adding one star since the functionalit is otherwise good (except from the step-approximated sine wave which might make it incompatible with newer Enrgy Star 5.0 compatible power supplies)"
This bit about psuedo sine wave - is that true? I was thinking of this to help iron out the dodgy power supply my house has - eg: 5pm when people get home the lights dim and brighten etc.
If so can someone recommend a good line interactive unit for around £100-200 that would be fine running a PC/monitor for a minute or so (enough time to save and shut down).
Thanks
Rik
APC Back-UPS BR900GI Line-interactive UPS - 900 VA/540
But then found this review on the forest:
"3.0 out of 5 stars Godd functionality - but noisy, December 1, 2011
By Persson Johan (Sweden) - See all my reviews
(REAL NAME)
This review is from: Back-UPS BR900GI Line-interactive UPS - 900 VA/540 WTower (Accessory)
This is a UPS that does what it is supposed to do - protect from power outage. The ratio of size/performance is pretty good and you can expect at least ~14 min runtime even on a really powerfull WS with dual monitors and a NAS attached even when the battery is not completely new.
However, you should be aware that the UPS is not silent. It has a fairly high "hissing" sound. In addition the sound is not completely even, the frequency of the sound changes slightly as the UPS drop-charges the lead battery (when it is fully charged - which is the normal case).
If you are sensitive to noise it might not be the best idea to have this at the side of the desk.
The cost has been reduced to this level since it will not produce a pure sine wave output. Beware that this might make it incompatible with some newer power supplies that frawn upons the step-approximated sine curve that is output.
Pro:
- Great power/size ration
- 8 outlets (4 battery backed up/ 4 surge protection only)
- Easy to replace battery - no cables to (de)attach
- There are a great open source linux daemon to act on UPS events
Cons:
- Fairly loud hissing noise
- No APC supplied SW for a linux server
- No pure sine wave output which might make it incompatible with some power supplies, be aware - worst case it will no be able to power your computer at all!!
Update:
- Atfer roughly a month of usage the device has quiet down for some reason to the point where it is barely noticable. I hope this change is here to stay. For this reason I'm adding one star since the functionalit is otherwise good (except from the step-approximated sine wave which might make it incompatible with newer Enrgy Star 5.0 compatible power supplies)"
This bit about psuedo sine wave - is that true? I was thinking of this to help iron out the dodgy power supply my house has - eg: 5pm when people get home the lights dim and brighten etc.
If so can someone recommend a good line interactive unit for around £100-200 that would be fine running a PC/monitor for a minute or so (enough time to save and shut down).
Thanks
Rik