5.9 System Connection Diagram
Note: If the RS485 cable length between inverter and meter is longer than 20m, please install the 120Ω resistor in port 24&25 of the meter.
5.10 AFCI (Optional)
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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