Second Protective Earth Terminal - Sungrow SG3KTL-EC User Manual

5 Electrical Connection User Manual
Where there is only one inverter in the PV power system, connect the "PE" cable to
the installation ground.
Where there are multiple inverters in the PV power system, connect the "PE" cables
of all inverters and mounting frame of PV arrays to the same copper bus bar. In this
way, they are in equipotential connection.
Fig. 5-3 Grounding of Inverter

5.6.2 Second Protective Earth Terminal

The inverters are equipped with second protective earth terminal as specified in EN
50178.
Second PE Terminal
There is a PE terminal on the right side of the inverter. You may choose to connect
the PE.
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