Sungrow SG33CX User Manual

User Manual 5 Electrical Connection
29
A B C
D
A
(SG40CX)
A
(SG50CX)
B
COM1
COM3
COM2
COM4
A
(SG33CX)
Fig. 5-1 Wiring terminals
* Figure shown here is for reference only. The actual product you receive may
differ
Item
Terminal
Mark
Note
A
PV terminals
+ / -
MC4 PV connector
SG33CX: 6 pairs of terminals
SG40CX: 8 pairs of terminals
SG50CX: 10 pairs of terminals
B
Communication
terminal
COM1
/3/4
For RS485 communication, digital input
and output DI/DO and DRM
communication wiring.
COM2
Communication module connection,
such as GPRS, WiFi, and E-Net
C
AC junction box
-
Remove the protective case and use the
junction box in the shipping accessory for
wiring.
D
Additional
grounding terminal
2, use at least one of them to ground the
inverter
5.3 Electrical Connection Overview
Electrical connection in the PV system includes additional grounding
connection, AC connection, and PV string connection.

Sungrow SG33CX Specifications

General

Model	SG33CX
Manufacturer	Sungrow
Rated Power	33 kW
Max DC Voltage	1100 V
Max Efficiency	98.7%
Start Voltage	200 V
Total Harmonic Distortion	< 3%
Power Factor at Rated Power	1
DC Connection Type	MC4
Allowable Relative Humidity Range	0 - 100%
Operating Altitude	4000 m
MPPT Voltage Range	200 V - 1000 V
AC Voltage Range	310 V - 480 V
Rated Grid Frequency	50 Hz / 60 Hz
Adjustable Power Factor Range	0.8 leading to 0.8 lagging
Operating Ambient Temperature Range	-25 °C ... +60 °C
Communication	RS485