I recently stated out loud that my homelab was stable, and now my UPS is posting less than 30 minutes of estimated normal load. What’s everyone using as a UPS?
I’ve been rocking the aptly-named CyberPower OR1500LCDRT2U for the past few years. Should I just replace the cells or upgrade the whole unit?
Did y’all mean to say milliseconds, and not microseconds? Sub-millisecond power loss would be less time than one AC cycle, whether 50 or 60 Hz.
Anyway, I do recall seeing some enterprise gear specifying operation through a drop in AC power lasting two cycles, precisely to cover the switch to UPS power, at least for 60 Hz power. So up to 33 milliseconds. A cursory search for hybrid inverters online shows a GroWatt with “<20ms” switchover, so this may be fine for servers and switches, when the inverter is operated without any solar panels.
For consumer grade equipment, all bets are off; some cheaper switch-mode power supplies do very weird things under transient conditions.