17
OPERATING
GB
BULK PHASE (constant current) - The batteries need more current than the battery charger can supply.
Current is limited to the maximum rated output. The battery charger can enter this phase during start-up,
when the batteries are low or when a high load is connected.
ABSORPTION PHASE (constant voltage) - The battery charger charges the batteries at a constant AB-
SORPTION voltage and at the current they need.
The current needed by the batteries will tend to diminish over time. When the required current is less than
20% of the maximum output value, the charger will change to the FLOAT phase.
FLOAT PHASE (maintenance) - The battery charger charges the batteries at the constant FLOAT voltage.
In this phase, as the batteries reach maximum capacity, they will tend to absorb current close to zero
Ampere. This float phase will allow the batteries to be on charge without the risk of overloading. The next
step to the ABSORPTION phase occurs when the demand for current goes over 20% of the maximum ou-
tput value.
CHARGING CHARACTERISTICS
Charging occurs in 3 phases:
OPERATION
When the battery charger is switched on, it automatically selects the optimum charge mode to best suit
the batteries or load connected. The battery charger has a loading characteristic of the IUoU type.
(V)
14.1 (28.2) [Gel 14.4 (28.8)]
(I)
Imax
20% Imax
BULK ABSORPTION FLOAT NEW CYCLE
TIME
TIME
13.5 (27.0) [Gel 13.8 (27.6)]
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