Solis 110kW S5 3-Phase Grid-Tie Inverter with 10 MPPT

The Solis 110kW S5 three-phase grid-tie inverter is a high-performance commercial and utility-scale solar inverter designed for large photovoltaic installations where maximum energy yield, grid stability, and long-term reliability are critical. This inverter is purpose-built for grid-connected solar systems and is not a hybrid inverter and does not support battery storage or backup operation.

This model is engineered for continuous operation in demanding environments such as solar farms, factories, warehouses, shopping centers, office parks, agricultural facilities, and large rooftop or ground-mounted PV plants. It focuses on efficient solar-to-grid conversion, advanced grid compliance, and intelligent string-level monitoring.

Purpose and Operating Role of the Solis 110kW Grid-Tie Inverter

The Solis 110kW inverter is designed exclusively to convert DC power from solar PV arrays into AC power for direct use on-site or export to the utility grid. It does not manage batteries, does not provide backup power, and does not operate during grid outages.

Its role is to maximize solar energy harvest, maintain grid-compliant output, and ensure stable power delivery under fluctuating solar and environmental conditions.

Three-Phase Power Injection and Grid Stability

This inverter delivers three-phase AC output at 230/400V and is designed to meet strict grid connection standards. It supports high output currents and maintains a power factor greater than 0.99, ensuring clean power injection with minimal harmonic distortion.

With total harmonic distortion below 3%, the Solis 110kW inverter helps protect grid infrastructure and connected equipment, making it suitable for large commercial and utility grid connections.

High-Density 10 MPPT Design for Large PV Arrays

One of the defining strengths of the Solis 110kW inverter is its 10 MPPT design, supporting up to 20 PV strings. This allows large solar arrays to be divided into multiple independently tracked sections, improving energy yield when panels are installed across different orientations, tilt angles, or shading conditions.

This MPPT density makes the inverter especially suitable for complex rooftops and large-scale ground-mounted PV systems where uniform string behavior cannot be guaranteed.

Wide Voltage Range and High DC Input Capability

The inverter supports a maximum DC input voltage of 1100V and operates across a wide MPPT voltage range. This enables long string configurations, reduced DC cable losses, and flexible array design.

A low startup voltage allows the inverter to begin producing power earlier in the day and continue operating later in the afternoon, increasing overall daily energy yield.

Commercial-Grade Monitoring and Diagnostics

The Solis 110kW S5 inverter includes advanced string-level monitoring, allowing individual string performance to be monitored in real time. Intelligent I-V curve scanning and fault detection assist with rapid fault diagnosis, performance optimisation, and reduced maintenance downtime.

These features are particularly valuable in large installations where manual string inspection is impractical.

Grid Protection, Safety, and Compliance

The inverter includes comprehensive protection features such as DC reverse polarity protection, output over-current protection, integrated DC arc-fault circuit protection, and surge protection on both DC and AC sides.

Anti-islanding protection and grid monitoring ensure safe disconnection during grid outages and compliant re-connection once grid conditions stabilize.

Thermal Management and Long-Term Reliability

The inverter uses intelligent redundant fan cooling to maintain optimal operating temperatures under sustained high load. This cooling strategy ensures stable performance in high ambient temperatures and supports continuous commercial operation.

A transformerless topology reduces internal losses and improves overall system efficiency.

Technical Specifications of the Solis 110kW S5 Grid-Tie Inverter

AC Output

• Rated AC output power: 110 kW
• Maximum apparent output power: 121 kVA
• Maximum output power: 121 kW
• Output voltage: 3/N/PE, 230/400 V
• Grid frequency: 50 / 60 Hz
• Rated grid output current: 167.1 A
• Maximum output current: 183.8 A

DC Input

• Maximum DC input voltage: 1100 V
• Start-up voltage: 195 V
• MPPT voltage range: 180 – 1000 V
• Number of MPPTs: 10
• Maximum input strings: 20
• Maximum input current: 10 × 26 A
• Maximum short-circuit current: 10 × 40 A

Efficiency

• Maximum efficiency: 99.0%
• European efficiency: 98.5%
• Self-consumption (night): < 2 W

Protection and Safety

• DC reverse polarity protection
• Integrated AFCI (DC arc-fault protection)
• DC surge protection: Type II
• AC surge protection: Type II (Type I optional)
• Anti-islanding protection
• Grid monitoring

Physical and Environmental

• Topology: Transformerless
• Cooling: Intelligent redundant fan cooling
• Ingress protection: IP66
• Operating temperature range: -25°C to +60°C
• Maximum operating altitude: 4000 m
• Dimensions: 1065 × 567 × 344.5 mm
• Weight: 84 kg