Sungrow SG33CX User Manual

User Manual 5 Electrical Connection
51
Free of fault,
relay does not trip.
Circuit is disconnected, and
LED indicator is off
COM NONC
逆变器
Fault occurs, relay trips.
Circuit is connected, and
LED indicator gets on
COM NONC
Inverter interior
Inverter interior
Fig. 5-5 Normal open contact
Free of fault, relay does not
trip.
Circuit is connected, and LED
indicator is steady on
COM NONC
逆变器
Fault occurs, and relay
trips.
Circuit is disconnected,
and LED indicator gets off.
COM NONC
Inverter interior
Inverter interior
Fig. 5-6 Normal close contact
Devices connected to the relay should comply with related requirements:
AC-Side Requirements
DC-Side Requirements
Max. voltage: 250Vac
Max. current: 5A
Max. voltage: 30Vdc
Max. current: 5A
DI terminal (emergency stop dry contact): the dry contact can be configured
to be an emergency stop contact.
When the DI contact and GND contact are shorted by external controlled switch,
the inverter will immediately stop.
The following figure shows the typical application of local stop dry contact.
The dry contacts only support passive switch signal input.

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