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Power flow in Bypass mode for the Alternate Input Models
5.7.3 Battery Backup Mode
The following illustration shows power flow during the battery backup mode. When
commercial AC power failures occur, the batteries instantly begin supplying DC
voltage to the main inverter circuit. This circuit inverts (hence; Inverter) the DC power
into AC power. The AC power is available at the output. This back-up process will
continue until the battery voltage drops below a specific minimum level. When this
occurs, the batteries will stop supplying power to the load. This minimum level is the
rated minimum voltage (V min).
Power flow in battery backup mode
Input
Power
Output
Power
Isolation
Transformer
Model
MCCB
Converter Inverter
Chopper
Batteries
Bypass
Power
Bypass
MBS
Input
Power
Isolation
Transformer
Model
MCCB Converter Inverter
Chopper
Batteries
Output
Power
Bypass
MBS