Electrical Connection Overview - Sungrow SG33CX User Manual

User Manual
A
* Figure shown here is for reference only. The actual product you receive may
differ
Item Terminal
A PV terminals
Communication
B
terminal
C AC junction box
Additional
D
grounding terminal

5.3 Electrical Connection Overview

Electrical connection in the PV system includes additional grounding
connection, AC connection, and PV string connection.
B C
Fig. 5-1 Wiring terminals
Mark
+ / -
COM1
/3/4
COM2
-
D
COM1 COM2
COM3 COM4
B
Note
MC4 PV connector
SG33CX: 6 pairs of terminals
SG40CX: 8 pairs of terminals
SG50CX: 10 pairs of terminals
For RS485 communication, digital input
and output DI/DO
communication wiring.
Communication
such as GPRS, WiFi, and E-Net
Remove the protective case and use the
junction box in the shipping accessory for
wiring.
2, use at least one of them to ground the
inverter
5 Electrical Connection
A
(SG50CX)
A
(SG40CX)
A
(SG33CX)
and DRM
module connection,
29