Battery Backup Mode - Toshiba 4200FA User Manual

Bypass
Power
Isolation
Transformer
Model
Input
Power
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).
Isolation
Transformer
Model
Input
Power
TOSHIBA
Converter
MCCB
Power flow in Bypass mode for the Alternate Input Models
MCCB Converter
Power flow in battery backup mode
37
MBS
Bypass
Inverter
Chopper
Batteries
MBS
Bypass
Inverter
Chopper
Batteries
Output
Power
Output
Power