56 Operation
BatteryRating (mod ulesonly). Thissetting is a battery discharge rating in kilowatts under partialload for an
extendedperiod, typically 60 minutes. The UPS uses the two battery shutdown voltagesettings and the two bat-
terydischarge ratings in computingrated and calculated time remainingduring a discharge event.
NOTE
TheLow Battery alarm setting is designed to be usefulat full load battery discharge
rates.It is typically set for 10 volts above the60-Minute Battery Shutdown voltage, to
providesome measure of warning under all circumstances.If the discharge period
extendspast 15 minutes (i. e., the load on the UPS is less than full capacity), the
BatteryShutdown voltage setting is gradually and automaticallyincreased to protect
thebatteries from deep discharge.The Low Battery alarm setting is notautomatically
increasedand should not be relied upon as an accurateindicator of battery time
remaining.Instead, the operator should consultthe Battery Time screen or Present
Statusscreen to see the calculated time remainingbased on actual usage during the
dischargeperiod.
DISCONTINUED
PROD U C T