Sungrow SG33CX User Manual

5 Electrical Connection User Manual
50
33mm
5~6 N.m
5.10 Dry Contact Connection
5.10.1 Dry Contact Function
The configuration circuit board is provided with fault output dry contact and
emergency stop dry contact, as shown in the figure below.
Connection method of the dry contacts is similar to that of the RS485 terminal
block.
DI DI PGND
PGND
NC COM NO
DO
CON1
Lower layer
Fault output dry contact
Emergency stop dry contact
DO terminal (fault output dry contact): the relay can be set to fault alarm
output, and user can configure it to be a normal open contact (COM＆NO) or a
normal close contact (COM＆NC).
The relay is initially at the NC terminal, and it will trip to another contact when a
fault occurs.
Use LED indicators or other equipment to indicate whether the inverter is in the
faulty state. The following figures show the typical applications of normal open
contact and normal close contact:
Dry contact cables require a cross section of 1 mm
2
to 1.5 mm
2
.
The connection procedure of the dry contact is the same as that of
the RS485 terminal block.

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