6 NS3000 UPS 60KVA~120KVA User Manual
2.3.1 Normal Mode
The inverter of power modules continuously supply the critical AC load. The
rectifier/charger derives power from the AC mains input source and supplies
DC power to the inverter while simultaneously FLOAT or BOOST charging its
associated backup battery.
Fig 2-3 Normal mode operation diagram
2.3.2 Battery Mode
Upon failure of the AC mains input power, the inverter of power modules, which
obtain power from the battery, supply the critical AC load. There is no
interruption in power to the critical load upon failure. After restoration of the AC
mains input power, the” Normal mode” operation will continue automatically
without the necessity of user intervention.
Fig 2-4 Battery mode operation diagram
Note
With the function of Battery cold start, the UPS may start without utility. See more detail in
section 5.1.2.
Summary of Contents for NS3000 Series
Page 6: ......
