UPS Output Voltage

OIDs here report the AC voltage a UPS is actually delivering to connected equipment — per phase, line-to-line and line-to-neutral, plus historical minimum and maximum values since the last reset. Admins compare output voltage across phases to catch imbalance or internal UPS wiring problems, and treat output voltage sagging toward the low end of nominal, or a rising maximum well above nominal, as a sign the UPS batteries are weakening or its regulation circuits need inspection, since this is the voltage actually reaching protected equipment.