Alpha Technologies AlphaCell OPzS - Manual (Page 42)

OPzS-BATTERY 42
OPzS Cell Type RI(mΩ)/CELL Short Circuit Current (amps)
3 OPzS 150 1.15 1739
4 OPzS 200 0.74 2703
5 OPzS 250 0.63 3175
6 OPzS 300 0.52 3846
5 OPzS 350 0.58 3448
6 OPzS 420 0.53 3774
7 OPzS 490 0.48 4167
6 OPzS 600 0.47 4255
8 OPzS 800 0.40 5000
10 OPzS 1000 0.30 6667
12 OPzS 1200 0.29 6897
12 OPzS 1500 0.29 6897
16 OPzS 2000 0.18 11111
20 OPzS 2500 0.16 12500
24 OPzS 3000 0.15 13333
12 OPzS 600 0.31 6452
12 OPzS 840 0.25 8000
14-12, Internal Resistance and Short Circuit Currents (2 Volts) «
14.0 Specifi cations, continued
15.0 Battery Room Ventilation Calculation
For the batteries charged in “buffer coupling” or “full fl oat” systems up to 2.4 Volts per cell, use the
following calculation to determine the battery room ventilation:
Q = 55 x n x I
where:
Q = the amount of the fresh air in liters per hour,
n = the number of cells in the battery or in the battery room and
I = the charge current in amperes causing hydrogen evolution.
Example:
For stationary batteries OPzS charged to 2.40 V/cell I = 2 A is taken for each 100 Ah of rated battery
capacity (C10).
The calculation of the ventilation for battery consisting of 54 cells type 4 OPzS 200 is as follows:
Q = 55 x 54 x (2 x 200/100) = 11.880 liters/hour
In the event where the unoccupied space of the battery room is 50 m 3 the air in the room should be
exchanged with a fresh air every 4.2 hours. If the natural room ventilation cannot reach the calculated
amount of air above, then the installation of forced a ventilation system with an acid-resistant pulling
fan is required.
Specifi cations and data are subject to change without notice.