Connecting The Pv Input Cable - Goodwe SDT Series User Manual

06 Electrical Connection

6.4 Connecting the PV Input Cable

Confirm the following information before connecting the PV string to the inverter. Otherwise,
the inverter may be damaged permanently or even cause fire and cause personal and
property losses.
1. Make sure that the max short circuit current and the max input voltage per MPPT are
within the permissible range.
2. Make sure that the positive pole of the PV string connects to the PV+ of the inverter. And
the negative pole of the PV string connects to the PV- of the inverter.
1. The maximum open-circuit voltage of each PV string cannot exceed:
• 850 V DC for the models of GW12KLV-SDT-C30 and GW17KLV-SDT-C30
• 1100 V DC for the models except GW12KLV-SDT-C30 and GW17KLV-SDT-C3 (recommend
1045 V considering low termpereture environment).
2. It is recommended that the voltage difference between MPPTs shall be less than 160 V.
3. It is recommended that the sum of the Imp of the PV strings connected to each MPPT shall
not exceed the Max. Input Current per MPPT of the inverter.
4. When there are multiple PV strings, it is recommended to maximize the connections of
MPPTs.
5. Mixing PV modules of different brands or models in the same MPPT or connecting PV
modules with different directions or inclination angles in the same PV string may not
necessarily damage the inverter, but may lead to a decrease in the system performance.
6. Connect the DC cables using the delivered PV connectors. The manufacturer shall not be
liable for the damage if other connectors are used.
7. The PV strings cannot be grounded. Ensure the minimum isolation resistance of the
PV string to the ground meets the minimum isolation resistance requirements before
connecting the PV string to the inverter.
8. The DC input cable should be prepared by customers.
9. Recommended DC input cable type: the outdoor photovoltaic cable that meets the
maximum input voltage.
Seal the PV input terminals using waterproof covers when they are not to be used. Otherwise,
the ingress protection rating will be influenced.
Click
DANGER
WARNING
NOTICE
30
User Manual V1.3-2024-01-25