Sungrow SG50CX User Manual

101
Fault Code Fault Name Corrective Measures
1600 - 1615,
1632 - 1655
PV Grounding
Fault
1. When the fault occurs, it is forbidden to directly
disconnect the DC switch and unplug PV termi-
nals when the direct current is greater than 0.5 A;
2. Wait until the direct current of the inverter falls
below 0.5 A, then disconnect the DC switch and
unplug the faulty strings;
3. Do not reinsert the faulty strings before the
grounding fault is cleared;
4. If the fault is not caused by the foregoing rea-
sons and still exists, contact Sungrow Customer
Service.
1616
System Hardware
Fault
1. It is prohibited to disconnect the DC switch
when the DC current is greater than 0.5 A when
the fault occurs.
2. Disconnect the DC switch only when the inver-
ter DC side current drops below 0.5 A.
3. It is prohibited to power up the inverter again.
Please contact Sungrow Customer Service.
Once a fault occurs to the optimizer, the fault information is displayed on the App.
Fault
Code
Fault
Name
Possible
Cause
Corrective Method
4
Input
overvolt-
age
The PV
voltage is
higher than
the set pro-
tection
value
Check whether the open-circuit voltage of the PV
module connected to the optimizer exceeds the
maximum input voltage allowed by the optimizer.
8
Output
overvolt-
age
The output
voltage ex-
ceeds the
set limit
value
1. Check whether the alarm still exists after this
alarm is cleared.
2. If the alarm persists, please contact Sungrow
Customer Service.
16
Overcur-
rent
The input
current ex-
ceeds the
set limit
value
1. Check whether the alarm still exists after this
alarm is cleared.
2. If the alarm persists, please contact Sungrow
Customer Service.
User Manual 9 Troubleshooting and Maintenance

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