TOSHIBA
6.0Operating the UPS
6.1AC Input Mode (Normal Operation)
The following illustration shows circuit power flow when the UPS is operating normally in the AC Input Mode. The converter of the UPS, including a boost chopper circuit, converts the AC input power into DC power. The boost chopper circuit maintains a constant voltage and provides current limiting for charging the batteries. It also supplies a DC voltage of the proper level to the inverter section. The inverter section generates a high quality sine wave output voltage. The batteries are maintained in a constantly charged state when the UPS is in the “Normal Operation Mode.”
Power Flow
Input
Power
Isolating
XFMR
MBS
Bypass
MCCB
Converter
Charger/
Chopper
Inverter
Output Power
External
Batteries
Power flow in AC Input Mode
4200FA CT/XT User’s Manual | 37 |
