V
6.3 Connecting Inverter to AC Grid ..................................................................... 30
6.3.1 AC Side Requirements .......................................................................................... 30
6.3.2 Connecting Inverter to AC Grid ........................................................................ 32
6.4 Connecting Inverter to PV Arrays .................................................................. 35
6.4.1 PV Inputs Configuration ...................................................................................... 35
6.4.2 Assembling DC Cable to Connector ............................................................... 38
6.4.3 Wiring Procedures .................................................................................................. 39
6.5 Grounding the Inverter ..................................................................................... 42
6.5.1 Grounding System Overview............................................................................. 42
6.5.2 Second Protective Earth Terminals .................................................................. 43
6.6 Communication Connection .......................................................................... 44
6.6.1 Communication Overview.................................................................................. 44
6.6.2 Communication System ...................................................................................... 45
6.6.3 RS485 Communication Connection ................................................................ 46
7 Commissioning ...................................................................... 48
7.1 Inspection before Commissioning ............................................................... 48
7.2 Commissioning Procedure .............................................................................. 48
8 Disconnecting, Dismantling and Disposing the Inverter .... 51
8.1 Disconnecting the Inverter ............................................................................. 51
8.2 Dismantling the Inverter .................................................................................. 52
8.3 Disposing the Inverter ...................................................................................... 52
9 Troubleshooting and Maintenance ...................................... 53
9.1 Troubleshooting .................................................................................................. 53
9.1.1 Troubleshooting of LED Indicator .................................................................... 53
9.1.2 Troubleshooting of Faults in LCD Screen ...................................................... 54
9.2 Maintenance ......................................................................................................... 58
9.2.1 Routine Maintenance ........................................................................................... 58
9.2.2 Maintenance Instruction ..................................................................................... 58
9.3 Contact Sungrow Service ................................................................................. 61
10 Operation of LCD Display Panel ............................................ 62
10.1 Description of Button Function ..................................................................... 62
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