Sungrow SG33CX User Manual

User Manual 5 Electrical Connection
45
Inverter
Logger
OUT
PC
ON OFF
120ohm
SW1
A1 A1 B1 B1
RS485
Multi-inverter communication system
In case of multiple inverters, all the inverters can be connected via RS485
cables in the daisy chain manner.
Inverter 1 Inverter 2~(N-1) Inverter N
Monitoring station
Logger
Terminal Block
RJ45
RJ45
RJ45
OUT
IN
OUT
IN
OUT
A1 A1 B1 B1
OUT
IN
A1 A1 B1 B1
OUT
IN
A1 A1 B1 B1
OUT
OUT
IN
OUT
IN
OUT
Terminal Block
Terminal Block
When more than 15 inverters are connected on the same daisy chain, the
inverters on two ends of the chain should be equipped with terminal resistors of
120Ω to ensure communication quality by configuring the dip switch (SW1), and

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