Description

Product Description

• Designed for large-scale grid-connected solar PV installations requiring medium voltage output up to 33 kV.

• Based on advanced three-level inverter technology for high conversion efficiency (up to ~99 %).

• Containerised modular design integrates the inverter, MV transformer, switchgear, auxiliary systems, and communications for simplified transport, installation, and maintenance.

• Supports DC input from high-voltage PV strings (up to 1500 V system DC) with multiple independent MPPTs for optimized energy harvest.

• Built-in grid support features including low/high voltage ride-through (L/HVRT), active/reactive power control, and power ramp rate management.

• Compliant with international power, safety, and grid codes (IEC 62271-202, IEC 62109, IEC 60076, IEC 62116, and equivalents).

Technical Specifications

Power & Conversion

• Rated power output: 3.2 MVA (3200 kVA) at 33 kV output level (typical configuration).

• Maximum AC output voltage range: up to approximately 35 kV (configurable within 10–35 kV).

• Nominal grid frequency: 50 Hz (with 45–55 Hz range); available 60 Hz variant (55–65 Hz).

• Power factor (nominal): > 0.99; adjustable from 0.8 leading to 0.8 lagging.

Efficiency & Performance

• Maximum inverter efficiency: ~99 %.

• European/wide-range efficiency: ~98.7 %.

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

DC (PV) Input

• Max. DC input voltage: up to 1500 V.

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

• Independent MPPT inputs and multiple DC string inputs (varies by model size).

Transformer & Grid Interface

• Integrated MV transformer steps up low-voltage AC from inverter to 33 kV for grid interconnection.

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

• Transformer vector group: Dy11 (typical).

Protection & Grid Support Features

• DC input protection: load break switch and fuse.

• Inverter and AC MV output protection: circuit breakers.

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

• Ground fault monitoring, insulation monitoring, and overheat protection.

• Grid support functions: low/high voltage ride-through (L/HVRT), active/reactive power control, adjustable power factor, and ramp-rate control.

Physical & Environmental

• Containerised outdoor design (standard 20-foot footprint) with weather-resistant enclosure.

• Dimensions (approx.): 6058 mm (W) × 2896 mm (H) × 2438 mm (D).

• Approximate weight: ~15 – 17.5 tonnes depending on configuration and components.

• Degree of protection: Inverter cabinet IP65 (optional), other parts IP54.

• Operating ambient temperature range: −35 °C to +60 °C with derating above ~45 °C.

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

Communications & Monitoring

• Standard interfaces: RS485 and Ethernet; optional optical fibre.

• Local touchscreen/LED display control and remote monitoring support.

Compliance & Standards

• CE and international IEC standards relevant to MV PV and transformer equipment (e.g., IEC 62109, IEC 61727, IEC 62116, IEC 62271-202, IEC 62271-200, IEC 60076).