Sungrow SG33CX User Manual

5 Electrical Connection User Manual
44
ON
OFF
120ohm
SW1
A1 A1 B1 B1
A2 B2
RS485
RS485
RS485-2 interface
RS485-1interface
(terminal block)
RS485-1 dip switch
RS485-1 interface
(RJ45)
All the three interfaces can be connected to a data acquisition device (Logger),
to achieve data exchange with PC or other monitoring devices.
The RS485-2 interface can only be applied to the application scenario of single
inverter communication.
The RS485-1 terminal block and the RJ45 interface can be applied to
applications where multiple inverters communicate in a daisy-chain form.
A 120Ω resistor can be connected in parallel between RS485-1 A/B pins by
configuring the dip switch.
RS485-1 terminal block interface and RJ45 interface serve as the same
function with wiring manner different.
5.9.2 RS485 Communication System
Single-inverter communication system
In case of a single inverter, communication cable connection requires only one
RS485 cable.

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