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3.5.1 PV Module Selection:
3.5.2 PV Module Wire Connection:
When selecting proper PV modules, please be sure to consider below parameters:
1) Open circuit Voltage (Voc) of PV modules not exceeds max. PV array open circuit voltage of
inverter.
2) Open circuit Voltage (Voc) of PV modules should be higher than min. start voltage.
Chart 3-5
PV Input Voltage
Inverter Model
SUN-10K-
SG04LP3-AU
SUN-8K-
SG04LP3-AU
SUN-6K-
SG04LP3-AU
SUN-5K-
SG04LP3-AU
SUN-12K-
SG04LP3-AU
550V (160V~800V)
200V-650V
PV Array MPPT Voltage Range
No. of MPP Trackers
No. of Strings per MPP Tracker
2
2+1
1+1
1+1
1+1
2+1
1. Switch the Grid Supply Main Switch(AC)OFF.
2. Switch the DC lsolator OFF.
3. Assemble PV input connector to the inverter.
Safety Hint:
Please don’t connect PV array positive or negative pole to the ground, it could
cause serious damages to the inverter.
Safety Hint:
Before connecting inverter, please make sure the PV array open circuit voltage is
within the 1000V of the inverter.
GFDI fault:
Before the inverter starts to connect to the grid, the inverter will first
detect the impedance of PV + to ground, and the impedance of PV-
to ground. If any of these impedance values is less than 33 kΩ, the
inverter will not connect to the grid and will report an error
F04 on its LCD.At the same time, the buzzer will sound.
Safety Hint:
Before connection, please make sure the polarity of the output voltage of PV
array matches the “DC+” and “DC-” symbols.
Pic 5.1 DC+ male connector (MC4)
Pic 5.2 DC- female connector (MC4)
