MaxPower Corp Gamatronic Power+ M100 - Manuel (Page 16)

Gamatronic Electronic Industries Ltd.
POWER+ 3x208 V User Guide, Release 2.1 8
2. O
PERATING
M
ODES
The POWER+ UPS functions to supply ac electrical power to your load.
While using the POWER+, three modes of operation are possible:
• Normal operation
• Battery operation
• Bypass operation
Normal Operation
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 ac input system feeds the charger which supplies dc
power to the inverter, while concurrently charging the batteries.
Battery Operation
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 batteries are galvanically connected by dc link to the inverter and the charger.
The dc inherently remains constant when the ac input supply drops out, without any
switching devices.
The duration of the battery operation is determined by the load demand and the
battery capacity.
Bypass Operation
During bypass operation, the load receives power directly from the 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, transfer to the ac input is automatic. As soon as the
problem is corrected, the load is transferred back to the inverter.