52
Freedom SW 230V Installation Guide
Stacking Features
To calculate the system total bulk output for the stacked pair,
Charger #1
output current
(in Amps)
+
Charger #2 Actual
output current
(in Amps)
=
System Total BULK
output current
(in Amps)
The System Total BULK
output current
flows into the
battery bank. As such, this total bulk current is split/
distributed within the bank through each individual parallel
and/or series connected battery. Therefore, the current each
battery “sees”
must not exceed each individual battery’s
maximum allowed charge current
as specified by the
battery manufacturer. Since most battery banks are comprised
of the same battery type, model and length of interconnecting
cables, current sharing is roughly equal through each parallel
branch of batteries. Therefore, the above generalizations of
maximum
charge rate (%) can be made for the entire battery
bank.
The Freedom SW 230V’s
Max Chg Rate
(%) setting defaults
to
100
(adjustable from
0
to
100
). So if the Freedom SW
3524-230 charger with a maximum possible 90A charger
capacity is set to a
Max Chg Rate
of
100
(%) then its full
90A of current can be delivered into the battery bank.
However, if this is too high, the installer/operator may reduce
the
Max Chg Rate
setting to suit the system battery type and
bank requirements (and limitations), to avoid overheating the
battery bank.
The user/installer is responsible of configuring the charger to
ensure that the
battery manufacturer’s recommended
maximum charge rate current
(in Amps)
is not exceeded to
prolong battery life and to exhibit best performance.
FSW 230V Installation Guide.book Page 52 Tuesday, August 7, 2018 9:18 AM