Sungrow SG50CX User Manual

61
figure 5-7 Normally open contact
figure 5-8 Normally closed contact
Devices connected to the relay should comply with related requirements:
AC-Side Requirements DC-Side Requirements
Max. voltage: 250 Vac
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 exter-
nal switch can be configured as normally open contact or normally closed contact), the inver-
ter will immediately stop.
NS terminal: NS Protection is currently used for German market. For plant sized more than
30kVA, inverter NS Protection terminals could be used in daisy chain to external NS Protec-
tion Relay to realize emergency stop when NS Protection Relay change its dry contact sta-
tus due to the grid abnormal running status.
NS Protection(including Passive Valid) can be set. When NS Protection is enabled on the
iSolarCloud, the inverters will operate normally when DI contact and GND contact are
shorted by external controlled switch, and the inverters will emergently stop when DI contact
and GND contact are disconnected.
The dry contacts only support passive switch signal input.
The following figure shows the typical application of local stop dry contact.
User Manual 5 Electrical Connection

Sungrow SG50CX Specifications

General

Max. DC Voltage	1100 V
MPPT Voltage Range	200 V - 1000 V
Max. Input Current per MPPT	26 A
Number of MPPTs	4
Rated AC Output Power	50 kW
Max. AC Output Current	76 A
Frequency	50 Hz / 60 Hz
Efficiency	98.6%
Start Voltage	200 V
Number of DC Inputs per MPPT	2
Max. AC Apparent Power	55 kVA
AC Voltage Range	310 V - 480 V
Power Factor at Rated Power	1
Adjustable Power Factor Range	0.8 leading - 0.8 lagging
THDi	< 3%
DC Switch	Yes
AC Surge Protection	Type II
DC Surge Protection	Type II
Protection Class	I
Cooling Method	Smart forced air cooling
Protection Degree	IP66
Protection Level	IP66
Operating Temperature Range	-25°C to +60°C
Humidity	0-100%
AC Output Voltage	3 / N / PE, 220 V / 380 V, 230 V / 400 V