6.5 Grounding the inverter
The inverter must be connected to the AC grounding conductor of the power distribution grid
via the ground terminal (PE).
Because of the transformerless design, the DC positive pole and DC negative
pole of PV arrays are not permitted to be grounded.
This inverter complies with IEC 62109-2 clause 13.9 for earth fault alarm
monitoring.
If an Earth Fault Alarm occurs, the fault code "Error 303,NE abnormal" will be
displayed on the inverter screen while the LED indicator red will light up.
(Applicable to inverters with graphical display only)
According to the relevant provisions of IEC 61643-32 "Connecting to photovoltaic devices surge
protectors - selection and use of guidelines", whether for household or commercial photovol-
taic power plants, it is necessary to ensure the implementation of lightning protection measures
for photovoltaic systems:
The lightning protection measures for photovoltaic systems shall be carried
out in accordance with the corresponding national standards and IEC stand-
ards. Otherwise, photovoltaic devices such as components, inverters and
power distribution facilities may be damaged by lightning.
In this case, the company does not carry out warranty and assumes any
responsibility.
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