Sungrow SG8K3-D - PV Connection

5 Electrical Connection User Manual
32
5.4 PV Connection
There is a risk of inverter damage! The following requirements should
be met. Failure to do so will void guarantee and warranty claims.
 Make sure that the maximum short circuit current of each DC input is
less than inverter allowable limit.
 Make sure that the maximum open voltage of each string is less than
600 V. Voltage over 600 V can damage the inverter.
 Make sure that the impedances between the positive terminal of the
PV string and Earth, and the impedances between the negative
terminal of the PV string and Earth are larger than 200 kΩ in any
case.
5.4.1 PV Input Configuration
-S Series
There is one input area with one MPP tracker. Only one input can be connected,
as shown in the following figure.
PV input
MPPT
Inverter inside
Type
Total PV Input
Power Limit
Open-circuit
Voltage Limit
Short-circuit
Current Limit
SG2K-S
3000 W
600 V
12 A
SG3K-S
4000 W
600 V
12 A
-D Series
For –D inverters except SG8K3-D, there are two pairs of PV terminals, each
with its MPP tracker.
The inverter SG8K3-D has three pairs of PV terminals. The PV1 has an
independent MPP tracker. The PV2 has two pairs of PV terminals, which are
internal paralleled and with one MPP tracker.