10
G8000MM
Installation and Operation Manual
C) Battery operation:
Load Power supplied by each system UPS battery and inverter.
FIGURE 1.3
Single Line Diagram - Battery Operation
Referring to Figure 1.3: In the event of AC input source failure or interruption, each system
UPS rectifier will de-energize and each UPS battery 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 rectifier 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, each system UPS Rectifier
automatically restarts operation, recharges the batteries and the Inverter is automatically
restarted without operator intervention. Load is automatically assumed by the inverter
without operator intervention.
For parallel operation power drawn by the load is equally shared between all system UPS
during battery operation.
CB1
Static Transfer
Switch
AC Bypass
Input
AC input
CB
CB3
52S
52C
User supplied
Breaker
UPS Module
Battery cabinet
CB2
Power Flow
Not in Use
RECTIFIER
INVERTER
Output