UPS 3000VA Smart-UPS Single Phase Online Uninterruptible Power Supply (SRT3000XLA)

Please be aware this is an "ONLINE" as opposed to "line interactive" UPS. In most cases a "line interactive" UPS is going to be ideal. APC has an application note detailing this. In North America this would possibly be good only for running on very dirty generator power. An Online UPS is always converting AC->DC->AC. I thought this might be a good solution for power conditioning in Costa Rica where the grid is extremely dirty. I put my electronics on it, and a couple of my house lighting circuits. Unfortunately the "sine wave" output is apparently less sinusoidal than my input power because it caused the lights to flicker when dimmed. So I can't use it in the normally "online" mode. The is a "bypass" and also a "green" mode (the differences between these are not clear). Using the Green Mode solves my flickering problem (because I'm using grid power when available) but unfortunately does not allow me to set the tight voltage tolerance that I want. The setting range is limited to a wide tolerance band. I knew that I was getting an "online" UPS but I think my application would have worked better on a "line interactive" type. The converted output is just not clean enough. It doesn't handle a triac-dimmed load. Should be ok for servers but I would still suggest a "line interactive" type unless you are really sure you need something different.

Es una porqueria, no pude instalarlo y cuanod por fin pude el distribuidor me dice que las baterias tiene 23 años de antiguedad , un robo totla