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UPS System Sizing Calculator
Size uninterruptible power supply systems for critical loads with battery backup time.
Critical Load
?
Total critical load in kW.
kW
Load Power Factor
?
Load power factor.
Backup Time
?
Required battery backup time.
minutes
Growth Factor
?
Factor for future load growth.
DC Bus Voltage
?
UPS DC bus voltage.
V
Calculate
Results
UPS Rating
-
kVA
Battery Energy
-
kWh
Battery Capacity
-
Ah
References:
IEEE Std 446 (Orange Book); IEEE Std 1184; NEC Article 480