Sunways STT Series, User Manual

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Model STT-15KTL STT-15KTL-P STT-17KTL STT-17KTL-P
Efficiency
Max. Efficiency 98.6% 98.6% 98.6% 98.6%
European Efficiency 98.2% 98.2% 98.2% 98.2%
MPPT Efficiency 99.9% 99.9% 99.9% 99.9%
Protection
DC Reverse Polarity Protection Integrated
Insulation Resistance Protection Integrated
Surge Protection Integrated
Over-temperature Protection Integrated
Residual Current Protection Integrated
Islanding protection Frequency shift, Integrated
AC Short-circuit Protection Integrated
AC Over-voltage Protection Integrated
General Data
Dimensions (mm) 550W*410H*175D
Weight (kg) 25 26 25 29
Protection Degree IP65
Self-consumption at Night (W) < 1
Topology Transformerless
Operating Temperature Range (° C) -30~60
Relative Humidity (%) 0~100
Operating Altitude (m) 3000
Cooling Natural Convection Fan Cooling
Noise Level (dB) < 25 < 25 <40 <40
Display OLED & LED OLED & LED OLED & LED OLED & LED
Communication RS485，WiFi/ GPRS/LAN(Optional)
Compliance
NB/T32004、IEC62109、IEC62116、VDE4105、VDE0126、
UTE C15-712-1、AS4777、C10/11、CEI0-21、RD1699、NBR16149、
IEC61727、IEC60068、IEC61683、EN50549、EN61000
Model STT-20KTL STT-20KTL-P STT-25KTL STT-25KTL-P
Input
Start-up Voltage (V) 200 180 200 180
Max. DC Input Voltage (V) 1,100 1,100 1,100 1,100
Rated DC Input Voltage (V) 620 620 620 620
MPPT Voltage Range (V) 200-950 160-1000 200-950 160-1000
No. of MPP Trackers 2 2 2 2
No. of DC Inputs per MPPT 2/2 2/2 2/2 2/2
Max. Input Current (A) 22/22 30/30 22/22 30/30
Max. Short-circuit Current (A) 30/30 40/40 30/30 40/40
backfeed current to the array (A) 0 0 0 0
Output
Rated Output Power (W) 20,000 20,000 25,000 25,000
Max. Output Power (W) 22,000 22,000 25,000 25,000
AC output rated apparent power(VA) 20,000 20,000 25,000 25,000
Max. Apparent Power (VA) 22,000 22,000 25,000 25,000
Rated Output Voltage (V) 3 / N / PE，230 / 400V
Rated AC Frequency (Hz) 50/60 50/60 50/60 50/60
AC output rated current（A） 31.9 31.9 39 39
Max. Output Current (A) 31.9 31.9 39 39
The measured Inrush current (A) 8.5A@4ms 8.5A@4ms 8.5A@4ms 8.5A@4ms
maximum output fault current (A) 76 76 76 76
maximum output overcurrent protection (A) 76 76 76 76
Power Factor 0.8 leading …0.8 lagging
Max. total harmonic distortion < 3% @Rated Output Power
DCI < 0.5%In
8 Technical Parameters 8 Technical Parameters