4．Operation; Operation Modes - BPE PS50 Series User Manual

4.1 Operation Modes

The UPS is a double-conversion on-line UPS that may operate in the following alternative
modes:
◆ Normal mode
The rectifier/charger derives power from the AC Mains and supplies DC power to the
inverter while floating and boosting charge the battery simultaneously. Then, the inverter
converts the DC power to AC and supplies to the load.
◆ Battery mode (Stored Energy Mode)
If the AC mains input power fails, the inverter, which obtains power from the battery,
supplies the critical AC load. There is no power interruption to the critical load. The UPS will
automatically return to Normal Mode when AC recovers.
4．Operation
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