The Deye SUN-20K-G05 is a state-of-the-art 20 kW three-phase string inverter of the latest generation for commercial and larger residential solar systems. With a peak efficiency of 98.5 % and a European efficiency of 98 %, it belongs to the absolute top class. Two independent MPPTs with an extremely wide voltage range of 200–1000 V and a start-up voltage of only 250 V guarantee maximum flexibility and highest yield under all light conditions. The comprehensive protection suite, intelligent air cooling (≤ 50 dB), Type II surge protection on both DC and AC sides, and optional AFCI ensure maximum safety and longevity. Weighing just 20 kg with compact dimensions (362 × 527 × 220 mm) and IP65 rating, it is perfect for easy outdoor wall mounting. Extensive communication options (RS485/RS232 standard, Wi-Fi/GPRS/4G/LAN optional) and certification to all major international standards (VDE-AR-N 4105, G99, EN 50549 etc.) make the SUN-20K-G05 the ideal choice for modern, future-proof solar projects.
Key Advantages
Top-Class Efficiency
98.5 % peak · 98 % European efficiency – minimal losses, maximum output.
Dual MPPT · Ultra-Wide Range
200–1000 V, starts at 250 V – ultimate design flexibility.
Ultra-Light & Compact
Only 20 kg, 362 × 527 × 220 mm – single-person installation.
Quiet & Rugged
≤ 50 dB, IP65, -25 to +60 °C – ideal for outdoor use.
Full Protection Suite
Type II SPD (DC+AC), optional AFCI, anti-islanding, RCMU, etc.
Complete Connectivity
RS485/RS232 standard, Wi-Fi/GPRS/4G/LAN optional.
Global Certification
VDE-AR-N 4105, G99, EN 50549, CEI 0-21, IEC 61727 and more.
Deye SUN-20K-G05 – The Ultra-Lightweight 20 kW Professional String Inverter
98.5 % Efficiency · 2 MPPT · Only 20 kg · IP65 · Global Standards
Product Safety Act (German "ProdSG")
Manufacturer: NINGBO DEYE INVERTER TECHNOLOGY Co., LTD
Add: No.26-30, South Yongjiang Road, Beilun, 315806, Ningbo, China
Tel: +86 (0) 574 8622 8957 E-mail: service@deye.com.cn
Responsible importer: SYD Green Energy GmbH & Co. KG
Represented by:
SYD Verwaltungs GmbH
An der Gümpgesbrücke 26
41564 Kaarst
Deutschland
Diese vertreten durch: Andrej Dedic und Maurice Dedic
Tel.: +492131 52811-23
Mail: info@solarset.shop
|
| Parameter | Value |
|---|
| String Inverter Model SUN-20K-G05 |
| PV String Input Data |
| Max. PV Input Power |
26 kW |
| Max. PV Input Voltage |
1100 V |
| Start-up Voltage |
250 V |
| MPPT Voltage Range |
200–1000 V |
| Rated PV Input Voltage |
600 V |
| Max. Operating PV Input Current |
26 + 26 A |
| Max. Input Short Circuit Current |
39 + 39 A |
| No. of MPP Trackers / Strings per MPP Tracker |
2 / 2+2 |
| AC Output Side |
| Rated AC Output Active Power |
20 kW |
| Max. AC Output Apparent Power |
22 kVA |
| Rated AC Output Current (400V / 380V) |
29 A / 30.3 A |
| Max. AC Output Current (400V / 380V) |
31.9 A / 33.3 A |
| Rated Output Voltage / Range |
220/380 V, 230/400 V (0.85 Un – 1.1 Un) |
| Grid Connection Form |
3L/N/PE |
| Rated Grid Frequency / Range |
50/60 Hz (45–55 Hz / 55–65 Hz) |
| Power Factor Adjustment Range |
0.8 leading – 0.8 lagging |
| Total Harmonic Distortion (THDi) |
< 3 % |
| DC Injection Current |
< 0.5 % In |
| Efficiency |
| Max. Efficiency |
98.5 % |
| European Efficiency |
98.0 % |
| MPPT Efficiency |
> 99 % |
| Equipment Protection |
| DC Reverse Polarity Protection |
Yes |
| AC Output Overcurrent Protection |
Yes |
| AC Output Overvoltage Protection |
Yes |
| AC Output Short Circuit Protection |
Yes |
| Thermal Protection |
Yes |
| Insulation Impedance Detection |
Yes |
| DC Component Monitoring |
Yes |
| Arc Fault Circuit Interrupter (AFCI) |
Optional |
| Anti-Islanding Protection |
Yes |
| Residual Current Detection |
Yes |
| Surge Protection Level |
Type II (DC), Type II (AC) |
| DC Switch |
Yes |
| Interface |
| Communication Interface |
RS485 / RS232 |
| Monitoring Mode |
GPRS / Wi-Fi / Bluetooth / 4G / LAN (optional) |
| General Data |
| Operating Temperature Range |
-25 °C to +60 °C (>45 °C derating) |
| Permissible Ambient Humidity |
0–100 % |
| Permissible Altitude |
4000 m |
| Noise Emission |
≤ 50 dB(A) |
| Ingress Protection Rating |
IP65 |
| Inverter Topology |
Non-Isolated |
| Over Voltage Category |
OVC II (DC), OVC III (AC) |
| Cabinet Size (W × H × D) |
362 × 527 × 220 mm (excl. connectors and brackets) |
| Weight |
20 kg |
| Type of Cooling |
Intelligent air cooling |
| Warranty |
5 years |
| Grid Regulation |
IEC 61727, IEC 62116, CEI 0-21, EN 50549, NRS 097, RD 140, UNE 217002, OVE-Richtlinie R25, G99, VDE-AR-N 4105 |
| Safety EMC / Standard |
IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1/2 |
| Model: |
SUN-20K-G05 |
| Start-up Voltage: |
250V |
| Anti-PID Function: |
Optional |
| Warranty: |
5 Years |
