Hi, I have a APC Smart UPS 3000, similar to the one shown in video #504 - UPS Tutorial and Teardown. Thank you for that video. My unit is rated for 208V operation, however, being in the US, the electric service to my home is 120/240 V. So, when I use this UPS, AVR/Voltage Trim is always on. My question is will this degrade the service life of either the batteries or the UPS itself? What is seems to be doing, per PowerChute software, is reducing the input voltage from 244.8V to 217.4V on the output.
Watching the video, which is excellent, it sounds like this UPS is designed to run off the mains/utility power mostly, and will only switch to using the transformers when there is an under or over-voltage situation which in my case, is constant. And hence my question of reliability.
Thank you!