Description

Product Description

The Sungrow SG320HX 320 kW PV Inverter is engineered for large grid‑tied solar power plants, commercial rooftops, and ground‑mounted PV arrays where high output and long‑term reliability are required. With support for high DC input voltages (up to 1500 V) and multiple independent Maximum Power Point Trackers (MPPTs), it enables optimal energy harvesting across complex PV string configurations. The inverter’s advanced features include very high conversion efficiency, smart grid support functions, proactive string monitoring, and integrated protections against faults and environmental stresses. Its rugged IP66 enclosure and C5 corrosion resistance ensure durability in challenging outdoor and harsh environments. The SG320HX also includes remote monitoring capability and smart operation tools like IV curve scanning, enabling efficient operation and maintenance at utility scale.

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Technical Specifications

AC Output

• Rated AC output power: 320 kW (nominal)

• Maximum AC power: ~352 kVA (at lower ambient)

• Nominal AC voltage: 800 V three‑phase

• AC voltage operating range: 640 V – 920 V

• Nominal frequency: 50 Hz / 60 Hz

• Frequency range: 45‑63 Hz

• Maximum AC output current: ~254 A

• Power factor: > 0.99 (adjustable 0.8 lead/lag)

• Total harmonic distortion (THD): < 3 %

DC Input & MPPT

• Maximum PV input voltage: 1500 V DC

• Startup DC voltage: 550 V DC typical

• Nominal DC voltage: 1080 V DC

• MPPT voltage range: 500 V – 1500 V

• Number of independent MPPTs: 12 (optional up to 16)

• Maximum DC input current per MPPT: ~40 A (or optional 60 A)

• Max. DC short‑circuit current per MPPT: ~60 A

• Max. PV strings per MPPT: 2

Efficiency

• Maximum conversion efficiency: 99.02 %

• European efficiency: 98.8 %

Protection & Safety

• Ingress protection: IP66 for dust and water resistance

• Corrosion resistance: C5 (harsh/coastal environments)

• Integrated protections:

  • DC reverse polarity protection

  • AC short‑circuit protection

  • Leakage and ground fault monitoring

  • Surge protection (DC & AC Type II)

  • Anti‑islanding and grid monitoring features

• Smart string current monitoring and insulation monitoring

Monitoring & Communication

• Display: LED plus Bluetooth and app support

• Communication interfaces: RS485, PLC (Power Line Communication)

• Smart O&M features: Smart IV curve diagnostics, remote firmware updates

Physical & Environmental

• Protection rating: IP66

• Cooling method: Smart forced‑air cooling

• Operating temperature range: ‑30 °C to +60 °C

• Maximum installation altitude: Up to ~5000 m with derating

• Night power consumption: < 6 W

• Dimensions (H × W × D): ~1136 × 870 × 361 mm

• Weight: ~116 kg

Applications

• Utility‑scale solar farms and large ground‑mounted arrays

• Commercial and industrial PV systems requiring high output capacity

• Large rooftop installations with multiple PV strings