Full Product Manual

10
PV Array Requirements
PV Strings
The commander is suitable for various types of PV configurations to maximize electrical
energy. Configurations are dependent on the open circuit voltage (Voc) and maximum
power point voltage (Vmp) located in solar panel specifications. The following table is to
serve as a reference only.
System Voltage
36 Cell Module
(Voc < 23V)
60 Cell Module
(Voc < 38V)
72 Cell Module
(Voc < 46V)
Max
Best
Max
Best
Max
Best
12V
4
2
2
1
2
1
24V
6
3
3
2
3
2
Note: The above parameter values are calculated under the STC conditions: Irradiance 1000W/m
2
,
Temperature 25°C, Air Mass 1.5
PV Max Power
The Commanders have a limiting current function, where the current is limited within a
range, and therefore allows battery charging at the correct value despite oversized input
power. The power operation follows the following conditions:
1. PV Actual Power ≤ controller rated charge power, the controller charge battery at
the actual maximum power point.
2. PV Actual Power ≤ controller rated charge power, the controller charges the
battery at the rated power.
WARNING: The Commander will be damaged if the PV array is 3X greater than the
actual operating power of the controller.
WARNING: The Commander’s reverse polarity is no longer warranted if the PV
array size is 1.5X greater than the rated power of the controller.