Sungrow SG8K3-D - Page 75

User Manual 10 Appendix
67
Parameters
SG3K-D
SG4K-D
power
No. of MPPTs
2
Max. number of PV strings per
MPPT
1
Max. PV input current
20 A (10 A / 10 A)
Max. current for input connector
24 A (12 A / 12 A)
Short-circuit current of PV input
24 A (12 A / 12 A)
Max. inverter backfeed current to
PV string
0 A
Output Data
Nominal AC output power
3000 W
4000 W
Max AC output apparent power
3000 VA
4000 VA
Max. AC output current
13.7 A
18.2 A
Max. inrush current
(peak value / duration)
8 A / 12 ms 10 A / 12 ms
Max. output fault current
(peak value / duration)
80 A / 3.2 ms 100 A / 3.2 ms
Max. output over-current protection
25 A
32 A
Nominal AC voltage
220 Vac / 230 Vac / 240 Vac
AC voltage range
176 Vac–276 Vac
(this may vary with grid standards)
Nominal grid frequency
60 Hz
Grid frequency range
55 Hz–65 Hz
(this may vary with grid standards)
Total harmonic distortion (THD)
< 3 % (of nominal power)
DC current injection
< 0.5 % (of nominal current)
Power factor
> 0.99 at default value at nominal power
(adj. 0.8 leading–0.8 lagging)
Protection
PV reverse connection protection
Yes
AC short circuit protection
Yes
Leakage current protection
Yes
Anti-islanding protection
Yes (frequency shift)
DC switch
Yes
Overvoltage category
III [AC], II [DC]
Overvoltage protection
II [AC]
Safety protection class
I
System Data
Max. efficiency
98.4 %
98.4 %
Max. European efficiency
97.7 %
98.0 %
Isolation method
Transformerless
Ingress protection rating
IP65
Pollution degree outside/inside the
enclosure
3 / 2
Power loss in night mode
< 1 W