User Manual 6 Electrical Connection
35
6.4.3 AC Wiring Procedure
Make sure that none of the DC or AC cables connected to the inverter is live
before the electrical work.
Danger to human life due to high voltage existing inside the inverter!
Do not turn on the AC side circuit breaker until all inverter electrical
connections have completed.
Assignment of AC cables should be paid attention to, especially the “PE”
wire.
No consuming load can be connected to power supply cables from the
inverter to the AC circuit breaker.
Ensure that the ground cable is laid as far away from and not directly in
parallel to the power supply cable.
Connect the inverter exclusively to TN or TT mains as the following procedures:
Step 1 Disconnect AC circuit breaker and prevent it from reconnection
inadvertently.
Step 2 Plug AC connector into corresponding AC terminal underneath the inverter.
Step 3 Connect “PE” cable to the grounding electrode. Where there are multiple
inverters in the PV power system, connect “PE” cables of all inverters and the
mounting frame of PV arrays to the same copper bus bar, which may
establish equipotential connection.
Step 4 Connect phase cable and “N” cable to the AC circuit breaker.
Step 5 Check whether the cables are firmly secured.
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