User Manual 1-3kVA Rev. 9
- Page 19 of Total 30 -
3. Operation
3.3 Operating Modes
Normal Mode
There are two main circuits when AC utility is normal: the AC circuit and the battery charging
circuit. The AC output power comes from AC utility input and passes through AC/DC rectifier,
DC/AC inverter and static switch to support power to load. The battery charging voltage comes
from AC utility input and is converted by AC/DC charger to support battery-charging power.
Battery Mode
The AC output comes from battery, passing through DC/AC inverter and static switch within
the battery backup time.