Chart 5.38
PV Array Grounding
Grounding conductor of PV panel brackets must be firmly connected to earth at PV array side and inverter side
and SP side. The sectional area of grounding conductor should be equal to the sectional area of DC grounding
conductor. The minimum wire diameter is 10.0mm
2
.
DC Grounding
Select the DC Grounding mode according to the local standard and use the PV grounding terminal box and DC
Grounding wires of the same specification.
Grounding Device
If the positive pole or the negative pole of PV array needs to be grounded in the PV system, the inverter output
should be insulated by Isolation Transformer. Isolation transformer must conform to IEC62109-1,-2 standard.
Connection as below:
Chart 5.39
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