Nominal UPS Output
This parameter, available through UPS Operating Parameters..., defines the output voltage level generated by the UPS when it is supplying battery power.
A 120 VAC UPS uses a fixed, 115
-volt value. All other UPS models allow you to select the value from a model-specific set of values.
For best results, set it to a value that matches or almost matches the typical AC utility input voltage so that no major voltage change occurs when the UPS switches to battery.
See also Matrix-UPS and Input Voltage.