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SOFAR 3.3K~12KTL-X
User manual
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Shenzhen SOFARSOLAR Co ., Ltd.
- 17 -
4. Electrical Connections
4.1. Electrical connection
Figure4-1 Shows the flowchart for connecting cables to the SOFAR
3.3K~12KTL-X
4.2. Connecting PGND Cables
Connect the SOFAR 3.3K~12KTL-X to the grounding electrode using
protection ground (PGND) cables for grounding purposes.
The inverter is transformerless, Requires The positive pole and the
negativepole of the PV array are not grounded, Otherwise it will
cause inverter failure, In the PV power generation system, all non
current carrying metal parts(such as: Bracket, Junction box shell,
inverter shell) should be connected to earth.
Attention
Note:
Good grounding for the SOFAR 3.3K~12KTL-X can help resist the impact
of the surge voltage and improve the EMI performance. First connect the
PGND cable before connecting the AC power cable, DC power cable, and
communication cable.
For the system with one SOFAR 3.3K~12KTL-X, connect the PGND cable
to the ground. For the system with multiple SOFAR 3.3K~12KTL-X,
connect the PGND cables of all SOFAR 3.3K~12KTL-X to the grounding
electrode using equipotential bonding.
If the installation location is near the ground, first connect the PGND cable
to the ground before installing the SOFAR 3.3K~12KTL-X on the wall.