Sungrow SG33CX User Manual

5 Electrical Connection User Manual
52
Inverter interior
DI DI PGND
PGND
passive switch
Fig. 5-7 Local stop contact
Inverter N
DI DI PGND
PGND
DI DI PGND
PGND
DI DI PGND
PGND
Inverter 1
Inverter 2
...
Controlled
switch
Fig. 5-8 Daisy chain topology
RS485 daisy chain in the master-slave mode
Inverter N
DI DI PGND
PGND
DI DI PGND
PGND
DI DI PGND
PGND
Inverter 1
Inverter 2
...
Controlled
switch
A1 A1 B1 B1
OUT
IN
PC
Logger
Ethernet port
RS485 terminal
Network port
A1 A1 B1 B1
OUT
IN
A1 A1 B1 B1
OUT
Fig. 5-9 Master-salve mode
The inverter directly connected to the Logger is set to be the master
inverter by default, and it sends stop instruction to other inverters via
RS485 communication.

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