Samlexpower PST-1500-12 Owner's Manual - Section 7 |
26 | SAMLEX AMERICA INC.
7.15.3 Series – Parallel Connection
6V
6V
6V
6V
12V String 1
12V String 2
Battery 1
Battery 3
Battery 2
Battery 4
12V Inverter
or 12V Charger
Cable “A”
Cable “B”
Fig. 7.4: Series-Parallel Connection
Figure7.4showsaseries–parallelconnectionconsistingoffour6V,200AH
batteriestoforma12V,400Ahbatterybank.Two6V,200Ahbatteries,Batteries1and2
areconnectedinseriestoforma12V,200Ahbattery(String1).Similarly,two6V,200Ah
batteries,Batteries3and4areconnectedinseriestoforma12V,200Ahbattery
(String 2). These two 12V, 200 Ah Strings 1 and 2 are connected in parallel to form a
12V,400Ahbank.
!
CAUTION!
When 2 or more batteries / battery strings are connected in parallel and are
thenconnectedtoaninverterorcharger(SeeFigs7.3and7.4),attention
should be paid to the manner in which the charger / inverter is connected to
thebatterybank.PleaseensurethatifthePositiveoutputcableofthebattery
charger / inverter (Cable “A”) is connected to the Positive battery post of the
firstbattery(Battery1inFig7.3)ortothePositivebatterypostofthefirstbat-
tery string (Battery 1 of String 1 in fig. 7.4), then the Negative output cable of
the battery charger / inverter (Cable “B”) should be connected to the Negative
batterypostofthelastbattery(Battery4asinFig.7.3)ortotheNegativePost
of the last battery string (Battery 4 of Battery String 2 as in
fig. 7.4). This connection ensures the following:
- The resistances of the interconnecting cables will be balanced.
- All the individual batteries / battery strings will see the same series resistance.
- All the individual batteries will charge / discharge at the same charging
current and thus, will be charged to the same state at the same time.
- None of the batteries will see an overcharge condition.
Section 7 |
General information on Lead Acid