8
Condition 3:
Actual charging power of PV array＞Rated charging
power of controller
Condition 4:
Actual charging current of PV array＞Rated charging
current of controller
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 power of PV module is greater than the rated
charging power, and the maximum open-circuit voltage of PV array is
more than60V(XTRA**06N)/100V(XTRA**10N)/150V(XTRA**15N)
(at the lowest environmental temperature), the controller may be damaged.
According to “Peak Sun Hours diagram”, if the power of PV
array exceeds the rated charging power of controller, then
the charging time as per the rated power will be prolonged,
so that more energy can be obtained for charging the
battery. However, in the practical application, the maximum
power of PV array shall be not greater than 1.5 x the rated
charging power of controller. If the maximum power of PV
array exceeds the rated charging power of controller too
much, it will not only cause the waste of PV modules, but
also increase the open-circuit voltage of PV array due to
the influence of environmental temperature, which may
make the probability of damage to the controller rise.
Therefore, it is very important to configure the system
reasonably. For the recommended maximum power of PV
array for this controller, please refer to the table below:
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