Sungrow SG33CX - Page 7

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4.3 Installation Tools ...................................................................... 18
4.4 Moving the Inverter .................................................................. 20
4.4.1 Manual Transport .................................................................... 20
4.4.2 Hoisting Transport ................................................................... 21
4.5 PV Bracket-Mounted Installation ............................................. 22
4.5.1 Preparation before Mounting ................................................... 22
4.5.2 Mounting Steps........................................................................ 22
4.6 Wall-Mounted Installation ........................................................ 24
4.6.1 Preparation before Mounting ................................................... 24
4.6.2 Mounting Steps........................................................................ 25
5 Electrical Connection .......................................................28
5.1 Safety Instructions ................................................................... 28
5.2 Terminal Description ................................................................ 28
5.3 Electrical Connection Overview ............................................... 29
5.4 Additional Grounding Connection ............................................ 31
5.4.1 Additional Grounding Requirements ........................................ 31
5.4.2 Connection Procedure ............................................................. 31
5.5 AC Cable Connection .............................................................. 32
5.5.1 AC Side Requirements ............................................................ 32
5.5.2 Requirement for OT/DT Terminal ............................................. 34
5.5.3 Aluminium Cable Requirements .............................................. 35
5.5.4 Connection Procedure ............................................................. 35
5.6 PV String Connection .............................................................. 38
5.6.1 PV Input Configuration ............................................................ 38
5.6.2 Connection Procedure ............................................................. 40
5.6.3 Installing the PV Connectors ................................................... 41
5.7 Communication Junction Box .................................................. 42
5.7.1 Remove the Junction Box ........................................................ 42
5.7.2 Install the Junction Box............................................................ 42
5.8 Communication Wiring Board .................................................. 43
5.9 RS485 Communication ........................................................... 43
5.9.1 Interface Description ............................................................... 43
5.9.2 RS485 Communication System ............................................... 44