LEGRAND KEOR XPE Serie Manuel De L'utilisateur page 24

Picture 3A – Green Conversion distribuited battery
When the Green Conversion algorithm is active the rectifier operates at reduced DC voltage
and supplies the inverter alone, since the battery is disconnected from the DC bus. The battery
charge is controlled by a specific algorithm. In case no mains outage events have occurred, and
so no battery discharges have occurred too, the control logic provides to start a charging cycle
once every 25 days. The battery-charger restores the capacity lost due to the self-discharge
and remains in floating charge for additional 12 hours. As this time has elapsed the battery
static switch is opened and the battery is disconnected from the DC bus.
In case a discharge event occurs, the control logic provides to calculate the capacity which has
been lost during the discharge; as the mains is restored a charging cycle is started, which is
extended for an additional time that depends on the percentage of lost capacity, referred to the
rated value.
 Lost capacity < 10%  Additional charge for 12 hours
 Lost capacity between 10% and 20%  Additional charge for 48 hours
 Lost capacity > 20%  Additional charge for 96 hours
Such values complies with the recommendations of the main battery manufacturers.
24 OMAF9213 REV. C
KEOR XPE UPS user manual
Manuel de l'utilisateur de l'ASI KEOR XPE
Utilizzo dell'UPS KEOR XPE