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Sungrow SG350HX-20 Three-Phase Solar Inverter | 350 kW

Modelo: SG350HX-20

Sku: SUNGINV027
Vendor: Sungrow

€11.958,91 EUR

€10.165,08 EUR

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The Sungrow SG350HX-20 Three-Phase Solar Inverter | 350 kW increases performance in 1500 V plants with 6 MPPT and 99% efficiency. IP66/C5, AFCI, SPD II, forced ventilation, Smart IV Curve, and RS485/PLC interfaces for professional O&M.

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Specifications

Product description

The Sungrow SG350HX-20 Three-Phase Solar Inverter | 350 kW is designed for large photovoltaic plants and industrial self-consumption at 800 Vac that require maximum production, safety, and reliability. Its 1500 Vdc architecture and 6 independent MPPT allow for long strings, better utilization of high-current modules (including bifacial), and lower BOS cost. With maximum efficiency of 99%, IP66 protection with C5 corrosion class, intelligent Smart IV Curve diagnostics, and robust RS485/PLC communications, this string inverter optimizes LCOE and simplifies operation and maintenance from the iSolarCloud platform.

Main features

1500 Vdc platform with 6 MPPT and up to 30 inputs (5 per MPPT) for flexible rooftop or ground designs.
High current per tracker: 75 A per MPPT (I_sc admissible 125 A), ideal for latest-generation modules.
Premium conversion: max. efficiency 99.0% (europ. 98.8%) and nighttime consumption < 6 W.
Industrial safety: AFCI, AC/DC insulation monitoring, anti-islanding, Type II SPD on DC/AC, and Anti-PID/PID Recovery functions.
Grid-friendly: LVRT/HVRT, P/Q control, power ramp, and Q at night for nighttime reactive support.
Smart O&M: Smart IV Curve diagnosis, guided commissioning, grid logs, and OTA update in iSolarCloud.

Advantages or benefits

More annual kWh: 6 MPPT reduce losses due to mismatch and shading; the wide MPPT range maintains power under real conditions.
High availability: intelligent forced ventilation, automatic DC disconnection in case of failure, and string-level inspection improve service continuity.
Lower installation cost: up to 30 2-in-1 inputs and AC terminals for Al/Cu reduce cabling and assembly time.
Grid code compliance and fast reactive power response (≈20 ms), facilitating grid connection in demanding projects.
Outdoor reliability: IP66/C5, operation from −30 °C to 60 °C and altitude up to 5000 m (derating > 4000 m).

Purpose or applications

Designed for large photovoltaic plants, extensive industrial rooftops, agri-food projects, and ground-mounted parks at 800 Vac with MV transformer. Excellent when long strings at 1500 V are required, multiple arrays or areas with different orientations, and advanced reactive power control.

Technical specifications

Nominal AC power	352 kVA @ 30 °C / 320 kVA @ 40 °C / 295 kVA @ 50 °C (commercial model 350 kW)
Max. AC current	254 A
Nominal AC voltage / range	800 Vac (3/PE) / 640–920 Vac
Frequency	50/60 Hz (45–55 / 55–65 Hz)
THD / DC injection	< 1 % / < 0.5 % In
Power factor	> 0.99 (adjustable 0.8 cap.–0.8 ind.)
Max. PV voltage	1500 Vdc
Vmin / Start / Vnom DC	500 V / 550 V / 1080 V
MPPT range	500–1500 V
No. MPPT / inputs	6 MPPT / up to 30 inputs (5 per MPPT)
I_max per MPPT / I_sc max.	75 A / 125 A
Max. / European efficiency	99,0 % / 98,8 %
Protections	AFCI, anti-islanding, ground monitoring, SPD II DC/AC, Anti-PID / PID Recovery
Grade / corrosion	IP66 / C5
Cooling / Night consumption	Intelligent forced / < 6 W
Temperature / Humidity	−30 to 60 °C / 0–100 %
Max. altitude	5000 m (derating > 4000 m)
Dimensions / Weight	1148 × 779 × 371 mm / ≤ 106 kg
Communications	RS485 / PLC, LED + Bluetooth + APP, iSolarCloud
DC / AC connection	MC4-Evo2 (≤ 6 mm²) / OT-DT (up to 400 mm²)

Compatibilities

Compatible with monofacial and bifacial modules at 1500 Vdc, iSolarCloud for monitoring and O&M, Smart Logger Sungrow and grid meters for export/PF control. Direct integration with MV transformers and DC/AC panels with Type II SPD. For strings close to 1500 V use MC4-Evo2 connectors.

The Sungrow SG350HX-20 Three-Phase Solar Inverter | 350 kW is a high-power solution that combines 99% performance, industrial safety, and intelligent O&M to maximize the availability and return of your photovoltaic plant.