The system connection for grid system without special requirements is as below.
Note：The backup PE line and earthing bar must be grounded properly. Otherwise, backup function may be
inactive during blackout.
5.9 System Connection Diagram
5.10 AFCI
The inverter is equipped with arc-fault circuit interrupter (AFCI). With AFCI protection, when there is an arc
signal on the DC side due to aging of the cable or loose contact, inverter can quickly detect and cut off the
power to prevent fire, making the PV system run more safely.
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