Description

Product Description

The Sungrow 50 kW PV Inverter (SG50CX / SG50CX‑P2 series) is designed for large commercial solar installations requiring reliable, efficient, and flexible power conversion. Featuring multiple independent Maximum Power Point Trackers (MPPTs) and a wide DC voltage range up to 1100 V, it extracts maximum energy from arrays with multiple string configurations, improving performance under shade and uneven conditions. The inverter includes a built‑in PID recovery function to mitigate module degradation and smart IV curve diagnostics for proactive system optimisation. Its rugged IP66 outdoor‑ready enclosure with C5 anti‑corrosion rating ensures durability in challenging environments. Comprehensive safety protections—such as surge protection, ground fault and leakage monitoring, and DC/AC protection—help protect both the inverter and the connected PV system. Communication is supported via RS485 (with optional Wi‑Fi and Ethernet) for remote monitoring and firmware updates, making it suitable for commercial rooftops and medium‑scale solar power plants.

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Technical Specifications (Bullet Form)

AC Output

• Rated AC output power: 50 000 W (50 kW) nominal at 400 VAC three‑phase

• Maximum AC power: ~55 000 VA depending on ambient conditions

• Nominal AC voltage: 230 / 400 V (three‑phase)

• AC voltage operating range: 312 – 528 V

• Maximum AC output current: ~83.6 A

• Frequency range: 45–55 Hz / 55–65 Hz

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

• Total harmonic distortion (THD): < 3 %

DC Input & MPPT

• Maximum PV input voltage: 1100 V

• Startup / minimum PV input voltage: 200 – 250 V

• Nominal PV input voltage: ~585 V

• MPPT voltage range: 200 – 1000 V DC

• Number of MPPT trackers: 4 or 5 independent MPPTs (model variant)

• PV strings per MPPT: 2 per tracker

• Maximum DC short‑circuit current: ~160 A total (40 A per input)

Efficiency

• Maximum conversion efficiency: ~98.7 %

• European efficiency: ~98.4 %

Protections & Safety

• Integrated protections: DC reverse polarity, AC short circuit, ground fault and leakage current monitoring, surge protection (Type I+II DC / Type II AC)

• Built‑in PID recovery function to counter potential degradation in PV modules

• Smart IV curve scan and grid fault recording for proactive O&M

• Arc fault circuit interruption (AFCI) support (on some variants)

Monitoring & Communication

• Standard communication: RS485

• Optional interfaces: Wi‑Fi and Ethernet

• Remote monitoring and diagnostics via cloud platforms supported

Physical & Environmental

• Ingress protection: IP66 (dust and water resistant)

• Corrosion resistance rating: C5 (suitable for coastal / harsh environments)

• Cooling: Intelligent forced‑air cooling

• Operating temperature range: –30 °C to +60 °C (derating above ~45 °C)

• Maximum installation altitude: Up to ~4000 m with derating

• Dimensions (approx): 782 × 645 × 310 mm

• Weight (approx): ~62 kg

Standards & Compliance

• Conforms to international grid and safety standards (region dependent) such as IEC/EN/UL grid codes

Typical Applications

• Commercial rooftop solar PV systems

• Ground‑mounted solar installations and medium‑scale solar farms

• Industrial solar generation requiring high MPPT flexibility and monitoring