Gamatronic Electronic Industries Ltd.
POWER+
SA
User Guide, Release 1.6
5
Battery Mode
If the input AC power fails or the voltage drops below an acceptable level, the UPS
operates in backup mode. In backup mode 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 battery
capacity.
Battery Mode display
Bypass Mode
In bypass mode the load receives power directly from the AC input via the static
switch.
Whenever the inverters cannot provide power to the load, for example, due to an
overload or a short-circuit in the load, the UPS supplies the load directly from the AC
input, bypassing the inverter. As soon as the problem is corrected, the load is
transferred back to the inverter automatically.
Bypass Mode display
