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
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BSFDPOOFDUFEJOTFSJFTUPGPSNB7"ICBUUFSZ 4USJOH4JNJMBSMZUXP7"I
CBUUFSJFT#BUUFSJFTBOEBSFDPOOFDUFEJOTFSJFTUPGPSNB7"ICBUUFSZ
(String 2). These two 12V, 200 Ah Strings 1 and 2 are connected in parallel to form a
7"ICBOL
!
CAUTION!
When 2 or more batteries / battery strings are connected in parallel and are
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should be paid to the manner in which the charger / inverter is connected to
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charger / inverter (Cable “A”) is connected to the Positive battery post of the
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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
CBUUFSZQPTUPGUIFMBTUCBUUFSZ #BUUFSZBTJO'JHPSUPUIF/FHBUJWF1PTU
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
Batteries
