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Sungrow Manuals
Inverter
SG33CX
User manual
Sungrow SG33CX User Manual page 7
Pv grid-connected inverter
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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
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