33
Item
Terminal
Mark
Note
G
Communica-
tion terminal
COM1,COM2
RS485 communication, digital input/output DI/
DO, etc.
H
Additional
grounding
terminal
use at least one of them to ground the inverter.
*If the PE cable is an independent single-core cable, it should be inserted into the AC junc-
tion box through the standby grounding terminal.
5.3
Electrical Connection Overview
The electrical connection should be realized as follows:
（
A
）
PV string
（
B
）
Inverter
（
C
）
Tracking Control Box
（
D
）
Grid
（
E
）
Monitoring device
（
F
）
AC circuit breaker
table 5-1 Cable Requirements
No.
Cable
Type
Specification
Cable Diame-
ter(mm)
Cross-sectional Area
(mm
2
)
1
DC cable
PV cable comply-
ing with 1,100V
standard
4.7 ~ 6.4
4 ~ 6
2
Power ca-
ble for
tracking
system
Outdoor two-core
copper wire cable
8 ~ 18
0.5 ~ 10
（
recommended
range: 4 ~ 6
）
3
Additional
grounding
cable
Outdoor single-
core copper wire
cable
The same as that of the PE wire in the AC
cable
User Manual
Summary of Contents for SG110CX-P2
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Page 81: ...71 End User Manual 5 Electrical Connection...
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