98.5% Efficiency
Maximum energy conversion
Deye Solar Inverters & Lithium Batteries: Prices in Qatar — Authorized DistributorDeye 20 kW Three-Phase String Solar Inverter SUN-20K-G05

20kW three phase string inverter with 98.5% efficiency and dual MPPT.
Authorised Deye distributor for Qatar — certificate No. GFKFLFI1.
Deye SUN-20K-G05, 20 kW, is also searched as deye inverter.
String solar inverter price in Qatar: QAR 8,673 – Deye 20 kW SUN-20K-G05.
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The Deye SUN-20K-G05 is a 20 kW three-phase string inverter from the String (G) family, sized for grid-tied rooftops on workshops, cold stores and mid-size commercial buildings. Its rated AC output is 20 kW, delivered on a 3L+N+PE connection at 220/380 or 230/400 V. Two MPPT trackers take 2+2 strings and up to 26 A of operating current each, so a roof split across two orientations behaves as two independent arrays and a shaded string cannot drag its neighbour down. The DC side accepts up to 26 kW of modules below an 1100 V ceiling, tracks from 200 to 1000 V, and starts generating from 250 V, which brings a short string online early in the morning. Peak conversion efficiency is 98.5% against a European weighted figure of 98.0%. The 20 kg IP65 chassis measures 362 x 527 x 220 mm, is certified to 4000 m altitude, includes a DC switch, and carries a stated 5-year warranty. We are an authorised Deye distributor and supply the SUN-20K-G05 from our own stock, with technical support before and after the sale.
Specifications last updated 24 January 2026
| AC Output Overcurrent Protection | Yes |
|---|---|
| AC Output Overvoltage Protection | Yes |
| AC Output Short-Circuit Protection | Yes |
| AC Voltage Tolerance (×Un) | 0.85-1.1 |
| Anti-Islanding Protection | Yes |
| Anti-PID Function | Optional |
| Arc Fault Circuit Interrupter (AFCI) | Optional |
| DC Component Monitoring | Yes |
| DC Injection Current (% of In) | <0.5 |
| DC Reverse Polarity Protection | Yes |
| European Efficiency | 98.0 % |
| Grid Connection Form | 3L+N+PE |
| Insulation Impedance Detection | Yes |
| Inverter Topology | Non-Isolated |
| Max. AC Output Apparent Power | 22000 VA |
| Max. AC Output Current | 33.3/31.9 A |
| Max. Efficiency | 98.5 % |
| Max. Input Short-Circuit Current | 39+39 A |
| Max. Operating PV Input Current | 26+26 A |
| Max. PV Input Power | 26000 W |
| Max. PV Input Voltage | 1100 V |
| Number of MPPTs | 2 |
| MPPT Efficiency | >99 % |
| MPPT Voltage Range | 200-1000 V |
| Overvoltage Category | OVC II(DC), OVC III(AC) |
| Power Factor Range (Leading to Lagging) | 0.8-0.8 |
| Rated AC Output Active Power | 20000 W |
| Rated AC Output Current | 30.3/29 A |
| Rated Grid Frequency | 50/45-55, 60/55-65 Hz |
| Rated Output Voltage | 220/380, 230/400 V |
| Rated PV Input Voltage | 600 V |
| Residual Current Detection | Yes |
| Startup Voltage | 250 V |
| Strings per MPPT | 2+2 |
| Surge Protection Level | TYPE II(DC), TYPE II(AC) |
| Current Total Harmonic Distortion (THDi) | <3 % |
| Virtual Synchronous Generator (VSG) Support | Yes |
| Warranty (Years) | 5 |
| Zero Export Support | Yes |
| Cabinet Dimensions | 362 x 527 x 220 mm |
|---|---|
| Communication Interfaces | RS485, RS232 |
| DC Switch | Yes |
| Monitoring Modes | GPRS, Wi-Fi, Bluetooth, 4G, LAN (optional) |
| String Monitoring | Optional |
| Weight | 20 kg |
| Derating Start Temperature | 45 °C |
|---|---|
| IP Rating | IP65 |
| Noise Level | <50 dB |
| Operating Temperature Range | -25 to 60 °C |
| Max. Operating Altitude | 4000 m |
| Permissible Ambient Humidity | 0-100 % |
| Thermal Protection | Yes |
| Cooling Type | Intelligent Air Cooling |
Looking up an error code on this Deye SUN G04/G05/G06 3-Phase? Browse the full list of codes for this device, with the cause and recommended fix for each.
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How many solar panels do you need? Learn to calculate the right system size for UAE, Saudi Arabia, Qatar, Jordan, and Egypt based on your consumption and energy goals.
Read: Solar System Sizing Guide for Middle East & Gulf Region →72 of the 134 Deye inverter records are three-phase, and the noise row runs from under 25 dB to under 65 dB. On an industrial site that second figure decides the mounting position — and it does not track power the way you would expect.
Read: Three-Phase Solar Inverter for a Dammam Factory: Which One, and Where Can You Mount It? →72 of 134 Deye inverter records are three-phase, and every unit rated under 65 dB is one of them. How noise and weight decide between a plant room and an outdoor wall on an RAK site.
Read: Best Three-Phase Solar Inverter for a Business in Ras Al Khaimah →Yes. The SUN-20K-G05 is rated -25 to 60 °C, with derating above 45 °C, which covers the heat and dust of the Gulf, North Africa and the wider MEA region. Mount it in shade for the best summer output. Its IP 65 rating handles dust and humidity.
The SUN-20K-G05 series operates with an MPPT voltage range of 200-1000V, providing flexibility in solar panel selection and system design.
Yes! Zero export functionality allows you to manage energy consumption and comply with grid export limits, maximizing self-consumption.