NOTE: The above parameters are calculated under standard test conditions (STC (Standard Test
Condition)：Module Temperature 25℃, Air Mass1.5, Irradiance 1000W/m
2
.)
(2) Max. PV Array Power
This MPPT controller has the function of charging current/power-limiting. During the
charging process, when the actual charging current or charging power exceeds the rated
charging current or charging power, the controller automatically limits the current or power.
It charges the battery as per the rated charging current or charging power. This function
can effectively protect the controller's charging modules and prevent damage to the
controller due to the over-connected PV array. The actual running status of the PV array is
as follows:
Condition 1: Actual PV array's charging power ≤ Rated controller's charging power
Condition 2: Actual PV array's charging current ≤ Rated controller's charging current
When the controller works under "Condition 1" or "Condition 2," it charges the battery as
per the actual charging current or actual charging power. At this time, the controller can
work at the maximum power point of the PV array.
When the PV module's power is not greater than the rated charging power, the PV
array's maximum open-circuit voltage is more than
100V(Tracer**10AN)/150V(Tracer**15AN)/200V(Tracer**20AN) at the lowest
temperature, the controller is damaged.
Condition 3: Actual PV array's charging power >Rated controller's charging power
Condition 4: Actual PV array's charging current >Rated controller's charging current
When the controller operates under "Condition 3" or "Condition 4," it will carry out the
charging as per the rated current or power.
When the PV module's power is greater than the rated charging power, the PV
array's maximum open-circuit voltage is more than
100V(Tracer**10AN)/150V(Tracer**15AN)/200V(Tracer**20AN) at the lowest
temperature), the controller is damaged.
According to the "Peak Sun Hours diagram," if the PV array's power exceeds the
controller's rated charging power, the charging time as per the rated power is prolonged.
The controller can obtain more energy. However, in the practical application, the PV array's
maximum power shall be not higher than 1.5 times the controller's rated charging power.
Suppose the PV array's maximum power exceeds the controller's rated charging power too
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