User Manual
Functions
Page 14 of 22
Backup Power Supply
The backup power supply is only provided when the inverter
function is switched on.
As soon as the supply voltage is interrupted, the integrated inverter
supplies the consumers with power from the batteries with almost no delay
(from approx. 25 ms).
If a supply voltage is once again applied to the AC input again, the G3 Combi
automatically switches back and supplies the consumers. In addition, the
battery is recharged.
Charging Process
Battery charging takes place with a 3-stage IU
1
U
2
characteristic curve for
gentle and optimum charging of the batteries.
The characteristic curves can be adapted by LEAB to the batteries
to be charged.
Charging with constant current (I-phase, green LED flashes fast)
In order to store as much energy as possible in the battery as quickly as
possible, it is charged at the maximum charging current, depending on the
battery charge status. In order not to damage the battery, heavily
discharged batteries are first charged with reduced current. After a certain
main charging voltage (depending on battery type) has been reached, the
G3 Combi switches to the next charging phase.
I
U
1
U
2
