Pv Inputs Configuration - Sungrow SG3KTL-EC User Manual

User Manual
Make sure that the maximum input-ground capacity of the inverter is less
than (0.12 uf/kW) * 3 kW/4 kW/5 kW/6 kW, otherwise the inverter will not
function properly.
Before connecting the PV arrays to 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 Kohm.
There is a risk of inverter damage! The following requirements should be met,
otherwise they will lead to loss of any and all warranty rights.
 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 1000 V.
Voltage over 1000 V can damage the inverter.
If the input line is changed, such as input line falls off, panels
configuration modified, etc. You need to reset the work mode.

5.5.1 PV Inputs Configuration

The inverter has two PV input areas DC1 input and DC2 input, each with its MPP
tracker. The two PV inputs can be configured in independent mode or parallel mode.
PV Configuration Mode-Independent Mode
For independent mode, the two PV inputs work independently, each with its own
MPPT. Therefore the two PV inputs can be different from each other in PV module
types, numbers of PV panels in PV strings, tilt angles and orientation angles of PV
modules.
As shown in the following figure, the inverter should be configured to independent
mode due to different orientation angles between the two PV inputs.
5 Electrical Connection
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