7
NOTE: The above parameter values are calculated under standard test
conditions (STC (Standard Test Condition) ： Irradiance 1000W/m
2
， Module
Temperature 25℃，Air Mass1.5.)
(2) Maximum PV array power.
The MPPT controller has the function of charging
current/power-limiting, that is, during the charging process,
when the charging current or power exceeds the rated
charging current or power, the controller will automatically
limit the charging current or power to the rated range, which
can effectively protect the charging parts of controller, and
prevent damages to the controller due to the connection of
some over-specification PV modules. The actual operation
of PV array is as follows:
Condition 1:
Actual charging power of PV array≤Rated charging power
of controller
Condition 2:
Actual charging current of PV array≤Rated charging
current of controller
When the controller operates under “Condition 1” or
“Condition 2”, it will carry out the charging as per the actual
current or power; at this time, the controller can work at the
maximum power point of PV array.
WARNING: When the power of PV is not greater than the rated
charging power, but the maximum open-circuit voltage of PV array is
more than 60V(XTRA**06N)/100V(XTRA**10N)/150V(XTRA**15N)
(at the lowest environmental temperature), the controller may be
damaged.
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