Stacking Features
each parallel branch of batteries. Therefore, the above generalizations of maximum charge rate (%) can be made for the entire battery bank.
The Freedom SW 230V’s Max Chg Rate (%) setting defaults to
100(adjustable from 0 to 100). So if the Freedom SW
The user/installer is responsible of configuring the charger to ensure that the battery manufacturer’s recommended maximum charge rate current (in Amps) is not exceeded to prolong battery life and to exhibit best performance.
Examples
Example 1: System composed of two stacked Freedom SW 2524- 230s. Each Freedom SW
The industry’s commonly accepted practice suggests a typical Flooded battery bank capacity (C) of 400Ah should not be charged beyond 25% of its capacity (100A). Therefore, when configuring the two stacked Freedom SW chargers, each charger may have a maximum allowable charger output current of 50A (400 × 25% × 1/2) into the common battery bank as described in the Calculations section. Also, the System Total BULK output current is calculated as 100A (50A + 50A).
To set the Max Chg Rate (%) setting in each Freedom SW 2524-230:
1.Divide the maximum allowable charger output current of 50A by the Freedom SW
So, 50 ÷ 65, gets an approximate value of 0.77 (or 77%) which can be roughly reduced to 75%.
2.Set the Max Chg Rate (%) setting to 75 which means 75%.
In this example, the actual output current is limited to 75% of 65A which is 48A. Therefore, the actual System Total BULK output current comes out to just under 100A.
48 | Freedom SW 230V Installation Guide |