Description

Product Description

• Turnkey MV solar inverter station integrating central inverter, MV transformer, switchgear, auxiliary power and monitoring systems in a standard outdoor containerised solution (20 ft or similar).

• Designed for 1500 V DC PV systems with advanced three-level inverter topology delivering high power density and high operational efficiency.

• Converts DC from PV arrays into grid-compatible AC at medium voltage (11 kV) with transformer insulation and protection built in.

• Modular design allows ease of transportation, maintenance and scalability in multi-unit installations.

• Compliance with international grid and electrical standards for safety, power quality, and grid interconnection.

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Technical Specifications

Power & Conversion

• Rated power output: 3.2 MVA (3,200 kVA) at 11 kV nominal voltage.

• DC system input voltage: up to 1,500 V depending on PV system design (typical of Sungrow MV stations).

• AC medium voltage output level: 11 kV nominal.

• Nominal grid frequency: 50 Hz standard (with support for 45–55 Hz range).

• Power factor: nominal >0.99, adjustable (typical from leading to lagging).

Efficiency & Performance

• Maximum inverter efficiency: up to ~99 % (depending on specific station model and conditions).

• European/weighted efficiency: ~98 %+ across typical operating range.

• Harmonic distortion (THD): < 3 % (at nominal rated power).

Transformer & Grid Interface

• Integrated MV transformer steps up LV inverter output to 11 kV for grid connection.

• Transformer cooling: typically ONAN (oil natural, air natural) or similar (specific model dependent).

• Transformer vector group and details vary by configuration (e.g., Dy11 typical).

Protection & Compliance

• Grid support functions: Low/High voltage ride-through (L/HVRT), active & reactive power control, ramp rate control (optional/configurable).

• DC/AC protection: load break switches, fuses, circuit breakers and surge protection.

• Insulation, grounding and monitoring protections integrated as per grid standards.

• Compliance with IEC standards for MV and PV systems (e.g., IEC 62271, IEC 60076, IEC 61727).

Physical & Environmental

• Containerised outdoor design: weather-rated enclosure with IP54-type protection (typical).

• Size and weight depend on station model and configuration (standard container dimensions ~6058 × 2896 × 2438 mm common on similar MV stations).

• Operating ambient temperature: typically −35 °C to +60 °C (derating above ~45–50 °C).

• Altitude range: installed up to ~1000 m or higher with optional configuration.

Communications & Monitoring

• Standard communications: RS485 and Ethernet, with optional optical fibre for remote monitoring.

• Local and remote system monitoring and O&M capabilities integrated with touchscreen and network interfaces.