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yes of course i need a fanless ups with no any buzz noise from the batteries tooWhat do you mean by totally silent UPS? IIRC, most all of them will make some kind of beep/alert when it's running on the backup supply to let warn you. Are you referring to quiet as in no fan noise?
My APC Back-UPS XS 1300 is silent unless there is a power outage.
There is a fan in that one, but it is temperature controlled. How much wattage are you pulling? If the unit is staying cool enough while under a reasonable load it could be interesting. I wonder if APC would cover it under warranty if it became noisy (either because wear and tear raised the regular operating temperature or degraded the fan bearings).
Not practical here in my room. Long runs, poor attic insulation where it would go. It would overheat in the summer.Couldn't you have the ups in a closet or another room and run the cord to it?
My APC Back-UPS XS 1300 is silent unless there is a power outage.
My requirements were for an online (aka double-conversion) UPS that could give me serious power-drop run time and run absolutely silently. I have a home office and I run client webinars/webcasts. So I can't have any fan noise or hum in the background. My home wiring and power reliability is terrible. My standard UPS's (I tried Tripp-Lite, APC, and CyberPower) were letting small power transients through that weren't enough to trigger backup power, but were enough to put my modem into a reset. Very nasty for my business!.
This was their answer:Hello.
I want you to reccomend me the best from the following UPS, according protection from electrical spikes and other possible electrical anomalies.
1) http://eu.cyberpowersystems.com/products/ups_systems/pfc-sinewave/cp1300epfclcd.htm
2) http://eu.cyberpowersystems.com/products/ups_systems/intelligent/cp1350eavrlcd.htm
3) http://eu.cyberpowersystems.com/products/ups_systems/pr/pr1500elcd.htm
4) http://eu.cyberpowersystems.com/products/ups_systems/ols/ols1000exl.htm
Also, can you rank these 4 UPS, with the same criteria, from 1 to 4, which one provides the best protection from electrical anomalies? (1 - the best protection- to 4 -worst protection- ) Thank you.
Dear Sir,
I hope you are fine and happy and many thanks for your email inquiry.
I will have to say that in principle online UPS systems provide the best possible power regulation as they can achieve a constant power output.
As such, the OLS1000E is the #1 choice using the critecria you mentioned. By the way, there is no XL model stocked in Europe.
However, there are drawbacks in comparison to the Line Interactive technologies that the other UPS systems you selected are based... For example, higher power consumtion and higher noise level as fans run continously.
Second choice (or first depending on how you look at it), is the PR1500ELCD. This is a GREAT system with low power consumption (less than 10W), great business features, ergonomics, easy battery service, low noise level (fans work only in some cases), etc. However this is Line Interactive technology, meaning at least a +/-5% variance in power regulation. Filtering is great on all models. An alternative to this model with the best price/performance is the PR1000ELCD. A great choice!
Third comes the CP1300EPFCLCD. A nice SOHO system with USB chargers, pure sinewave output, low power consumption (less that 5W), very low noise, but +/-7% on power output regulation as variance. Also can not buck the high currents.
Last is the CP1350... Similar to the CP1300EPFCLCD, but simulated sinewave output, and no USB chargers. This model actually is no longer stocked in Europe.
Again many thanks for your inquiry and always at your service.
Very Kind Regards,
George K.
Older modelsA lot of the APC 1000+ units have fans that are only on while recovering from an outage and charging at high rate, or while running on battery.
On some models the charging circuit will make a high pitched whine when charging at high power/current, but thats rare if your power has been clean from the wall.
I have 6 APC ups's and plenty of experience managing them(lots of different models)
Dont get a smart-ups get a regular back-ups, for example BR1500GOlder models
apc
sua1500
sua1000
sua100xl
Only run the fan when charging, on battery or when power conditioning.
The new models:
SMT1500
SMT1000
SMT*
Run the fan all the time.
I disagree and think the sua1500 or sua1000 is near perfect for a home ups.Dont get a smart-ups get a regular back-ups, for example BR1500G
While some Smart-UPS have a better run time, potentially better modified wave(or optional full sinewave) output, phase-lock/matched always online mode(costly for input/conversion efficiency and heat output, but no switching delay), or more connectivity options to the PC (serial and network cards for example) they are not meant for home office or home/personal workstations. As such, they are more noisy and larger/heavier/most costly...