
34 | SAMLEX AMERICA INC.
SECTION 7 |
General Information on Lead Acid Batteries
17.3.2 Shutting Down the Inverter at Desired Depth of Discharge
It is recommended that programmable parameter "UVP Setting (See Section 7.12.2) may be used to shut
down the inverter at voltage threshold corresponding to the desired Depth of Discharge. For example, if
the inverter is to be shut down at 80% Depth of Discharged (20% State of Charge) at C-Rate discharge cur-
rent of C/5 Amps, the voltage will be 21.8V for PSR-1200-24 (Refer to Fig 7.1).
7.14 SERIES AND PARALLEL CONNECTION OF BATTERIES
7.114.1 Series Connection
12V,
200 Ah
Battery 4
Battery 3
Battery 2
Battery 1
48V Inverter
or 48V Charger
12V,
200 Ah
12V,
200 Ah
12V,
200 Ah
Cable “A”
Cable “B”
Fig 7.2: Series Connection
When two or more batteries are connected in series, their voltages add up but their Ah capacity remains
the same. Fig. 7.2 shows 4 pieces of 12V, 200 Ah batteries connected in series to form a battery bank of
48V with a capacity of 200 Ah. The Positive terminal of Battery 4 becomes the Positive terminal of the 48V
bank. The Negative terminal of Battery 4 is connected to the Positive terminal of Battery 3. The Negative
terminal of Battery 3 is connected to the Positive terminal of Battery 2. The Negative terminal of Battery 2
is connected to the Positive terminal of Battery 1. The Negative terminal of Battery 1 becomes the Negative
terminal of the 48V battery bank.
7.14.2 Parallel Connection
48V*
100 Ah
* NOTE: Each of the 48V, 100 Ah battery banks will consist of (i) 8 pieces of 6V, 100 Ah batteries in series or
(ii) 4 pieces of 12V, 100 Ah batteries in series.
48V*
100 Ah
48V
Battery
Bank 1
48V
Battery
Bank 2
48V
Battery
Bank 3
48V
Battery
Bank 4
48V*
100 Ah
48V*
100 Ah
Cable “A”
Cable “B”
48V Inverter
or 48V Charger
Fig 7.3: Parallel Connection
Содержание PSR-1200-24
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