G
AMATRONIC
E
LECTRONIC
I
NDUSTRIES
L
TD
.
10
CENTRIC 3x480, User Guide, rel. 1.7
3.
O
PERATING MODES
The
Centric
UPS functions to supply ac electrical power to your load.
The
Centric
has three possible modes of operation:
•
Normal mode.
•
Battery mode.
•
Bypass mode.
3.1
Normal mode
The UPS is almost always in normal operation mode. The load receives its power from the inverters that
supply stabilized voltage, protected from spikes and irregularities in the ac input. The rectifier feeds the
inverter, and also feeds the charger which supplies dc power to the battery charger.
3.2
Battery mode
During battery operation, the load continues to receive power from the inverters, but the dc input to the
inverter is taken from the batteries, instead of from the rectifier.
The duration of the battery operation is determined by the load demand and the battery capacity.
3.3
Bypass mode
During bypass operation, the load receives power directly from the bypass ac input via the static switch.
Whenever the inverters cannot provide power to the load, either due to an overload or a short-circuit in the
load, the load is automatically moved to the bypass ac input. The load is automatically returned to the
inverter when the problem has been corrected.
