Description

Product Description

• Industrial-grade MV PV inverter station built for utility-scale solar applications with 1500 V DC PV input and integrated MV transformer stepping up AC to 11 kV for direct grid connection.

• Utilises advanced three-level inverter technology with high conversion efficiency (maximum up to ~99 %) and effective thermal management for reliable operation in demanding environments.

• Modular and containerised design allows easy transportation, installation and maintenance while housing power electronics, switchgear, cooling, monitoring and auxiliary systems in a single standard footprint.

• Supports grid support functions including low/high voltage ride-through (L/HVRT), active/reactive power control, adjustable power factor, and power ramp-rate control to comply with utility requirements.

• Integrated monitoring and protection systems provide DC/AC overcurrent protection, surge protection, insulation and ground-fault monitoring, with local HMI and remote communication options (Ethernet/RS485).

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Technical Specifications

DC (PV) Input

• Maximum PV input voltage: up to 1500 V.

• Typical MPPT operating voltage range: ~895 V – 1500 V.

• Independent MPPT inputs: multiple (model-dependent).

AC (Output) / Power Ratings

• Approximate AC output power: 4.48 MVA (4,400 kVA class based on SG4400UD-MV family).

• Nominal medium-voltage output: 11 kV.

• Nominal/adjustable power factor: > 0.99 (nominal); 0.8 leading to 0.8 lagging adjustable.

• Grid frequency range: 50 Hz (45–55 Hz) or 60 Hz (55–65 Hz).

Efficiency & Performance

• Maximum inverter efficiency: ~99 %.

• European (or weighted) efficiency: ~98.7 %.

• Total harmonic distortion (THD): < 3 % at nominal power.

Transformer & Grid Interface

• Integrated MV transformer with typical vector Dy11.

• Transformer cooling: ONAN (oil-natural, air-natural).

Protection & Grid Support Functions

• DC input protection: DC load switch + fuse.

• AC MV output protection: circuit breakers.

• Surge protection: DC Type II and AC Type II.

• Ground fault and insulation monitoring included.

• Grid functions: L/HVRT, active/reactive control and ramp-rate control.

Physical & Environmental

• Containerised outdoor design (20-foot ISO container footprint).

• Approximate dimensions: 6058 × 2896 × 2438 mm.

• Approximate weight: ~20 000 kg (model class).

• Protection: Inverter enclosure IP65; other components IP54.

• Operating temperature range: –35 °C to +60 °C (derating above ~45 °C).

• Maximum operating altitude ~1000 m (options for higher).

Monitoring & Communication

• Standard communications: RS485 and Ethernet.

• Local HMI and WebHMI/LED indicators for status and control.

Compliance & Standards

• Compliant with CE and multiple international standards including IEC 62109, IEC 61727, IEC 62116 and IEC 62271 series.