Sungrow SG3.0RT Quick Installation Manual page 41

DC
If the DC protection cover delivered separately need to be installed on site, please firstly lead the DC cables through the waterproof
terminal on the DC protection cover and then assemble the DC connectors.
It is recommended to use heavy duty conduits when run cables through Cavity walls, or lay out cables with corresponding conduits.
A RCD is not required if either of these two installation methods is adopted according to the local standard AS3000-2018.
(For "AU" and "NZ")
1
4
7
Optimizer：
DC=
+
-
+
-
2
5
.
2.5-3 N m
8
+
-
1
DC-
+
-
+
-
DC
3
OFF
6
ON
+
Click
- PV +
PV- PV+
40
4...6 mm
ø 6...9 mm
≥7
Click
≤ 1100 V
580.0
-
2
7mm