57
Stacking Features
Calculations
Once installed and configured, each
$XWR3RZHU
charger in
the dual configuration should be set to its own bulk charge
current limit as follows:
Industry accepted
PD[LPXP
charge rate (%)
[
battery bank’s total Amp-hour capacity (
&
)
[
1
/
2
(for one of the chargers)
0D[LPXP
charger #1
output current
(in Amps)
allowed in bulk mode (also limited to the charger’s
maximum capacity)
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
PD[LPXP
charge rate (%) can be made for the entire battery
bank.
The
$XWR3RZHU
’s
0D[&KJ5DWH
(%) setting defaults to
(adjustable from
to
). So if the
Auto Power 3000
charger with a maximum possible 150A charger capacity is
set to a
0D[&KJ5DWH
of
(%) then its full 150A of
current can be delivered into the battery bank. However, if
this is too high, the installer/operator may reduce the
0D[&KJ
5DWH
setting to suit the system battery type and bank
requirements (and limitations), to avoid overheating the
battery bank.
RISK OF SHORTENED BATTERY LIFE
Configure the charger to ensure that it does not exceed the battery
manufacturer’s recommended maximum charge specifications to prolong
battery life and to exhibit best performance.
Failure to follow these instructions can damage the unit and/or damage
other equipment.
Summary of Contents for 091-269-12-2000
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