Preparation before wiring :
Connect the protective ground wire (PE)
Connect the inverter to the grounding bar through the protective earth (PE) to
achieve grounding protection.
> Good grounding is good for resisting surge voltage impact
and improving EMI performance. Therefore,you need to ground
the wire before connecting the AC,DC,and communication ca-
bles.
> For a single-machine system,only the PE cable needs to be
grounded;For a multi-machine system,the PE cables of all in-
verters need to be connected to the same grounding copper bar
to ensure equipotential connection.
Fig 6.1 Grounding diagram
> Disconnect the inverter DC switch,AC side circuit breaker or switch.
> Measure the voltage and frequency of the public grid (voltage:AC 230V; fre-
quency:50Hz)
The recommended specifications of the AC output switch are as follows:
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