SMA CORE-1 STP 50-41

The SMA Sunny Tripower CORE‑1 STP50‑41 is a three-phase string inverter with 50kVA rated AC power for commercial and industrial PV applications. The free-standing device concept allows installation without additional mounting structures and simplifies DC and AC connections on site. With a maximum DC input voltage of 1,000V, six MPP trackers, and high conversion efficiency, the device is suitable for complex generator fields and long string layouts. Integrated protection functions such as DC load-break switches and arc fault detection increase operational safety, while compliance with VDE‑AR‑N‑4105 and VDE‑AR‑N‑4110 standards permits use on medium- and low-voltage grids. The IP65 protection class enables use in demanding environmental conditions.

• TechnologyThe CORE‑1 technology is based on a transformerless, three-phase string inverter design. The configuration for 50,000VA rated AC power and a DC nominal power of around 51kW allows slight oversizing of the PV generator. Six independently operating MPP trackers support different module arrays and roof orientations, thereby reducing yield losses due to partial shading. The European efficiency of 97.8% indicates low conversion losses in real operation and is relevant for systems with high annual yields.
  
  Power and conversion concept
  • Transformerless design reduces weight and increases efficiency compared to conventional industrial inverters.
  • Six MPP trackers enable flexible string layouts and separate yield optimization for complex generator areas.
  • Design for up to 1,000V DC supports long strings and reduces the need for parallel wiring.
• ConnectivitySeveral industrial communication interfaces are available for monitoring and system integration. Modbus and SMA Speedwire enable integration into higher-level energy management and SCADA systems. Webconnect allows direct data transmission to portal solutions without additional gateways. The integrated web interface and local display support commissioning, parameterization, and on-site diagnostics, reducing installation times and simplifying troubleshooting.
  
  Communication and monitoring options
  • Modbus interface for standardized connection to third-party monitoring and control systems.
  • Speedwire and Webconnect for manufacturer-specific monitoring and fast remote supervision.
  • Integrated display for local status and fault indication without additional devices.
• WarrantyThe inverter is supplied with a standard manufacturer’s warranty of five years. This basic warranty covers typical operational risks in continuous commercial operation. For projects with long runtimes or special availability requirements, the warranty can optionally be extended to up to 20 years. The extension option is relevant for investment and maintenance concepts, as it enables predictable service costs over the entire system life cycle.
  
  Warranty concept
  • Five-year standard warranty as protection for the initial and ramp-up phase of the system.
  • Optional extension to 20 years to reduce long-term operational risks.
• SustainabilityFrom a sustainability perspective, the CORE‑1 supports efficient resource use through high efficiency and reduced power losses, which lowers cooling requirements and component stress. The robust design for grid-parallel operation in accordance with current VDE application rules enables a long service life in industrial environments. The use of durable components and the option for long-term warranty extensions contribute to reduced replacement and disposal frequency.
  
  Resource and life-cycle aspects
  • High efficiency reduces electrical losses and thermal stress during continuous operation.
  • Long service life reduces material consumption by avoiding premature replacement.
• QualityThe IP65 protection class qualifies the inverter for outdoor installations and environments protected against dust and water jets. Integrated protection functions such as DC load-break switches and arc fault circuit interruption (AFCI) increase electrical safety and minimize fire risks on the DC side. The I‑V generator diagnostics support quality assurance during operation, as deviations in individual strings can be detected at an early stage.
  
  Safety and quality features
  • IP65 enclosure for reliable operation in demanding outdoor environments.
  • AFCI function detects series arc faults and enhances fire protection on the DC level.
  • I‑V diagnostics allow detailed analysis of string performance during operation.
• ExpandabilityThe CORE‑1 is designed for modular expansion and project customization. Optional interface and I/O modules allow the functionality to be adapted to specific grid or system requirements. Accessories such as external surge protection modules or mounting systems support integration into different system layouts. Scalable communication enables the integration of multiple devices into larger system structures.
  
  Options and system customization
  • Retrofit-capable I/O and communication modules for project-specific requirements.
  • Compatible accessories for surge protection and mechanical integration.
  • Suitable for parallel integration into larger PV generator fields.