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It is recommended that two points of the inverter should be connected to the ground system
of the PV plant.
Internal Grounding
A grounding copper bar is provided at the bottom of the DC cabinet for the grounding of the
armored cable.
The inverter needs to be grounded on site. The following operations should also
be conducted on site:
Measure the electrical conductivity between the device ground terminals and the
total equipotential connection copper bar to ensure the effectiveness of the
internal ground connection.
Perform the external grounding according to on-site situation and instructions of
the plant staff.
The grounding resistance should be no more than 4Ω.
The grounding resistance should be determined according to local standards and
regulations.
Observe the country-specific regulations and standards at all times!
If you have any problems in relation to during the ground cable connection,
contact the related technical personnel in time. Any installations not following the
standards or the installation and alternation without permission may lead to safety
incidents or damage to the devices. Sungrow shall hold no liability for the
damages caused.
6.8 Finishing Electrical Connection
After the electrical connection, check the connection of all cables for correctness
and firmness.
After ensuring that all connections are correct and firm,
6 Electrical Installation System Manual
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