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
