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INSTALLATION:
(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 eectively
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.
WARNING
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 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.
WARNING
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 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
!
IMPORTANT
The above parameters are calculated under standard test
conditions (STC (Standard Test Condition): Module Temperature
25°C, Air Mass 1.5, Irradiance 1000W/m2.)
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