SUNWAY
TM
SI
MANUALE
D’USO
82/156
5.3 AC Connection
Type
Wire cross sectional area
recommended value/max. value
(
mm²
)
External diameter
(
mm
)
SUNWAY
TM
SI-3K/3.6K/
4K/5K/6K-S2
4.0 /6.0
4.2~5.3
SUNWAY
TM
SI-7K/8K-S2
3*8.37/3*10
15~22
Table 5.1 Recommended power grid connecting cable specification
If the grid-connection distance is too far, please select AC cable with larger
diameter as per the actual condition.
5.3.1 GND of the Inverter.
After penetrating the external hex head screw through OT terminal of the
grounding line, screw in the grounding port of enclosure of the inverter in
clockwise direction and make sure it’s screwed up tightly.
Fig. 5.4 Inverter ground protection