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Grounding connection can be divided into two parts, equipotential connection of container internal
devices and container external grounding.
#1
#2
k
Figure 6-5 Container ground connection
Equipotential connection of container internal devices
All devices inside the container should be connected equipotentially. The equipotential connection
copper bar is located under of the power distribution box. Equipotential connection of #1
、
#2
inverters and the power distribution box has been finished before delivery.
NOTE:
The equipotential connection copper bar must be connected to the grounding grid of
the whole plant using a grounding cable (recommend 70mm
2
copper cable) on site.
External grounding
Perform the external grounding according to the on-site situation and the instructions of the plant
staff.
The grounding resistance should be no more than 4Ω.
NOTE:
At least, one of two points of the container external grounding must be connected to
ground system of whole plant.
6.6 AC Connection
6.6.1 Safety Notices
WARNING:
Incorrect AC connection may cause damages to the inverter.
WARNING:
Electrical hazards!
Do not touch the live components.
Disconnect the AC switches and ensure all terminals are voltage-free.
The connection to the distribution grid must be carried out only after receiving
approval from the distribution utility as required by national and state
interconnection regulations.
