Operation Overview; Normal Operation: Load Power Supplied By Each System Ups Inverter; Figure 3-1 Single Line Diagram - Normal Operation: Load Fed By Ups Inverter - Toshiba G9000 SERIES Installation And Operation Manual

3.2 Operation Overview

The UPS provides two power paths between the utility source and the critical load.
Figure 3-1 shows the path for normal operation, with the load powered by the inverter.
Figure 3-2 shows the path for bypass operation, with the load supplied through the static bypass
line. Figure 3-3 shows the path for battery operation, with the load powered by the inverter.
3.2.1

Normal Operation: Load Power Supplied By Each System UPS Inverter

CB
Bypass
Input
Output
supplied
MCCB
CB
AC
input
User
supplied
MCCB
CB
Battery
Cabinet
External
BATTERY
Power Flow
Not in Use

Figure 3-1 Single Line Diagram - Normal Operation: Load fed by UPS inverter

During normal operation, the path through the UPS inverter is used to power the load.
In Figure 3-1 input AC power is converted to DC by the Converter. DC power is utilized to
charge the UPS battery and to provide power to the Inverter. The Inverter converts the DC
power to regulated AC power to supply the critical load.
8
Bypass Module
CB 3
Static Transfer
Switch
CONVERTER / INVERTER
CB 1
CHARGER
CB2
CONVERTER / INVERTER
CB 1
CHARGER
CB2
CONVERTER / INVERTER
CB 1
CHARGER
CB2
G9000 1000-2000kVA Installation and Operation Manual 91469-007
UPS
52 S
CABINET
52 C
UPS Module
52 C
UPS Module
52 C
UPS Module
Output
3 ~ 6 UPS
modules