Epever Tracer-BN Series MPPT, User Manual

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9
of PV modules and maximize converting solar energy into electrical energy.
According to the open circuit voltage (V
OC
) and the maximum power point voltage
(V
Mpp
) of the MPPT controller, the series number of different types PV modules can
be calculated. The below table is for reference only.
System
voltage
36cell
Voc
＜
23V
48cell
Voc
＜
31V
54cell
Voc
＜
34V
60cell
Voc
＜
38V
MAX. Best MAX. Best MAX. Best MAX. Best
12V 4 2 2 1 2 1 2 1
24V 6 3 4 2 4 2 3 2
System
voltage
72cell Voc
＜
46V 96cell Voc
＜
62V
Thin-Film Module
Voc
＞
80V
MAX. Best MAX. Best
12V 2 1 1 1 1
24V 3 2 2 2 1
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.)

PV array maximum power
This MPPT controller has a limiting function of charging current, the charging current
will be limited within rated range, therefore, the controller will charge the battery with
the rated charging power even if the input power at the PV exceeds.
The actual operation power of the PV array conforms to the conditions below:
1
）
PV array actual power ≤ controller rated charge power, the controller charge
battery at actual maximum power point.
2
）
PV array actual power > controller rated charge power, the controller charge
battery at rated power.
If the PV array higher than rated power, the charging time at rated power to battery
will be longer, more energy to battery yields.
WARNING: Controller will be damaged when the PV array straight
polarity and the actual operation power of the PV array is three times
greater than the rated charge power!
WARNING: Controller will be damaged when the PV array reverse
polarity and the actual operation power of the PV array is 1.5 times
greater than the rated charge power!
When the PV array straight polarity, the actual operation of the PV array must NOT