> the system operates in an ideal enviornment with 90CFM of airflow > going through the case, a sine-wave APC SmartUPS powering it, as
Hi. Sorry for bugging in, but I got curious: These SmartUPS really do "wave-correction"? I've heard, from other brand vendors (some Italian brand) that APC didn't had ANY such UPS, that they only worked in a garanteed sine-wave with correct voltage when operating in battery mode (no ac available) I have a BackUPS and what happens to me is that it workes in two states: a) - If Voltage > Thresold (user-definable at 192v, 184v, 176v or 168v), workes with AC power directly (well, maybe it has a peek filter). b) - If Voltage < Thresold, works in battery mode - outputs the wanted "almost-sine" 220v What happens to me is that in my area its common, at night or during winter, to have an AC voltage of 195v to 185v, at least during a couple of hours... (the normal should be 220-230). So I am facing 2 problem with my BackUPS: 1 - I don't have a stable power cause it does not garantees the correct output unless in battery mode 2 - I had to set thresold to 184 to prevent it from beeing always on battery [what would shut down my systems after 15 min], and thus I have to bear with voltages variation between 230v-184v... That Italian brand (now I remeber, it was "ally", I think) said they (ally) were the only ones to do a "dual-power-conversion": During normal usage (no battery mode) their UPS would pickup AC power (that could be from 160 something volts to 200 and someting volts), convert to DC, and then back to a perfect AC output with the wanted voltage/frequency.. In short: What do those SmartUPS do better than a BackUPS? Thanks Joao Clemente -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
