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The SG4400UD-MV is Sungrow’s 1500 Vdc medium-voltage, grid-connected PV inverter station with integrated MV transformer, switchgear and LV auxiliary power in a compact 20-foot container.
| Input (DC) | |
|---|---|
| Max. PV input voltage | 1500 V |
| Min. / Startup input voltage | 895 V / 905 V |
| MPP voltage range | 895–1500 V |
| No. of independent MPP inputs | 4 |
| No. of DC inputs | 20 (optional: 28) |
| Max. PV input current | 4 × 1435 A |
| Max. DC short-circuit current | 4 × 3528 A |
| PV array configuration | Negative grounding or floating |
| Output (AC) | |
| AC output power | 4400 kVA @ 45 °C; 4532 kVA @ 40 °C; 5060 kVA @ 22.5 °C |
| Max. inverter output current | 4 × 1160 A |
| Max. AC output current | 292.2 A |
| Rated voltage range (MV) | 10 kV – 35 kV |
| Nominal grid frequency / range | 50 Hz / 45–55 Hz; 60 Hz / 55–65 Hz |
| Power factor (nominal / adjustable) | >0.99 / 0.8 leading – 0.8 lagging |
| Feed-in phases / AC connection | 3 / 3 |
| Efficiency | |
| Max. / European efficiency | 99.0% / 98.8% |
| Transformer | |
| Rated / Max. power | 4400 kVA / 5060 kVA |
| LV / MV voltage | 0.63 kV / (10–35) kV |
| Impedance | 8% (0 – ±10%) @ 4400 kVA |
| Vector / Cooling / Oil | Dy11 / ONAN / Mineral oil (PCB-free) |
| Protection & Functions | |
| DC input protection | DC load switch + fuse |
| Inverter output / AC MV output protection | AC circuit breaker / AC circuit breaker |
| Surge protection | DC Type II / AC Type II |
| Grid & ground-fault monitoring / Insulation monitoring | Yes / Yes |
| Overheat protection / Q at night | Yes / Optional |
| General Data | |
| Dimensions (W×H×D) | 6058 × 2896 × 2438 mm (≈ 238.50 × 114.02 × 95.98 in) |
| Weight | ≈ 20 T (≈ 44,093 lb) |
| Degree of protection | Inverter: IP65; Others: IP54 |
| Auxiliary power supply | 15 kVA (optional: up to 40 kVA) |
| Operating ambient temperature | −35 °C to 60 °C ** |
| Relative humidity | 0% – 100% |
| Cooling method | Temperature-controlled forced air |
| Max. operating altitude | 1000 m (standard) / >1000 m (optional) |
| Display / Communication | LED indicators, Ethernet + WebHMI / RS485, Ethernet |
| Compliance | CE; IEC 62109, 61727, 62116, 60068, 61683, 62271-202; VDE-AR-N 4110/4120:2018; EN 50549-2; UNE 206007-1:2013; NTS 631; UTE C15-712-1:2013 |
** When temperature is below −20 °C, an optional configuration is required. All specifications are taken from the Sungrow datasheet (V21).
The Sungrow MVS Station-SG4400UD-MV is designed to deliver exceptional performance, reliability, and scalability for modern renewable energy applications. As large-scale solar and energy storage installations continue to grow, the demand for efficient power conversion systems becomes increasingly critical. This advanced medium-voltage station offers the durability, intelligence, and efficiency required to support long-term energy production while maintaining operational stability in challenging environments.
The Sungrow platform is engineered with next-generation technology that optimizes power flow, minimizes energy loss, and ensures seamless integration with medium-voltage grids. Built with smart operational features, robust construction materials, and a forward-thinking design, this model is tailored for utility-scale performance. Whether used in solar farms or hybrid renewable installations, it supports consistent power output and reliable grid compatibility.
One of the most impressive characteristics of the Sungrow MVS Station-SG4400UD-MV is its ability to streamline installation and maintenance. The pre-assembled station design significantly reduces setup time, helping teams accelerate project timelines while maintaining industry-leading standards. The modular configuration also allows technicians to access internal components easily, ensuring long-term serviceability and minimal downtime.
When investing in a medium-voltage station, long-term performance and cost-efficiency are essential. This station offers a wide range of benefits:
Engineered with cutting-edge technology, the Sungrow MVS Station-SG4400UD-MV boasts exceptional efficiency levels that help maximize usable energy output. Reduced energy loss translates into improved ROI, especially for large-scale renewable projects where every percentage point of efficiency significantly impacts overall yield.
The thermal management system is optimized to maintain stable operating temperatures even during peak load conditions. This ensures reliable operation, protects internal components from heat-related degradation, and contributes to long-term product lifespan.
Grid-support features, reactive power control, and voltage regulation help maintain stable operation in diverse utility environments. This makes the Sungrow MVS Station-SG4400UD-MV suitable for regions with fluctuating grid conditions or strict regulatory requirements.
Utility-scale installations require equipment that is both space-efficient and easy to integrate. This station balances powerful performance with an intelligently engineered, compact footprint that helps reduce installation space and simplifies site planning.
The integrated monitoring platform provides real-time data insights, allowing operators to track system performance, troubleshoot issues, and optimize energy output. Remote diagnostics and automated reporting further improve operational transparency and reduce the need for on-site interventions.
The versatility of this medium-voltage station makes it suitable for a wide variety of renewable and hybrid energy environments:
Utility-scale solar farms
Commercial and industrial energy storage
Hybrid solar-storage systems
Off-grid and microgrid power solutions
Large-scale agricultural or remote energy installations
Its ability to maintain stable performance in demanding climatic conditions makes it an ideal solution for projects requiring high efficiency, long-term reliability, and minimal maintenance intervention.
Choosing the right power conversion infrastructure is a crucial decision in any large-scale renewable energy setup. With its exceptional efficiency, robust engineering, and advanced intelligence features, this model stands out as a high-value investment.
The station’s modularity, thermal optimization, and grid compliance features combine to create a high-performance system designed for both current and future energy demands. Additionally, its durability and service-friendly structure allow operators to maintain consistent output without significant operational interruptions.
For projects focused on maximizing energy harvest, reducing long-term costs, and achieving dependable performance, the Sungrow MVS Station-SG4400UD-MV proves to be a forward-thinking and dependable choice.
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