Koyoe KY-EST06KH, User Manual

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8.4. Additional Grounding Connection
a) System grounding (First PE at AC connector L, N
，
PE)
A single inverter system needs to ground the "PE" cable;
b) Protective earthing (second PE at external enclosure)
The inverter is required to add protective earthing connection port. Users can choose to
connect the grounding protection line according to their needs. The grounding port is located
next to the AC output port at the bottom of the inverter. The installation method is shown in
Fig.
Figure connecting grounding protection wire
M5X12mm
Warning!
• Since the inverter is transformerless , neither the negative
pole nor the positive pole of the PV string must
not
be
grounded. Otherwise, the inverter will not operate normally.
• Connect the additional grounding terminal to the protective
grounding point before AC cable connection, PV cable
connection, and communication cable connection.
• The ground connection of this additional grounding terminal
cannot replace the connection of the PE terminal of the AC
cable. Make sure the two terminals are both grounded reliably.