Toshiba G9000 SERIES Installation And Operation Manual page 21

Referring to Figure 1.3: In the event of AC input source failure or interruption, the UPS
Converter(s)* will de-energize and the UPS battery(s)* will immediately discharge and supply DC
power to the Inverter to maintain continuous AC power to the load. This operation will continue
until:
a) The battery capacity expires and the inverter turns off, or
b) Input power is restored after which the converter will power the inverter and critical load and
simultaneously recharge the batteries.
A fully charged battery will provide power for the specified time at the rated load, or longer, at a
reduced load.
When power is restored after a low battery shutdown, the UPS converter(s)* automatically restarts
operation, the charger(s)* recharges the batteries and the Inverter(s)* is automatically restarted
without operator intervention. Load is automatically assumed by the inverter without operator
intervention.
The power drawn by the load is equally shared between all UPS regardless of the presence
absence of the UPS that is (are) in battery operation or not whenever the system is in the Parallel
Operation. .
G9000 1000kVA Installation and Operation Manual – 91469-004
(s)* : In the case of the Parallel Operation
(s)* : In the case of the Parallel Operation
or
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