The Absolute Leading Role for Solar Farm


Lower LCOE, higher power generation revenue

Kehua's new generation of 1500V string inverter up to 250 kW, and is suitable for a 1500V big block design, 12 MPPT*30A, 1.5 times DC/AC Ratio, which results in a minimized cost of a power station and increase the revenue for customer. It is calculated that this solution can reduce the BOS cost by 1% and increase the power generated in a 100 MW station by 1.5 million kilowatt-hours per year, when compared to those with a string system less than 200 kW. It is an optimal string inverter for a big block design.

Meeting design standards for nuclear-grade products, boasting all-round excellence

  • With nuclear-grade production qualifications, Kehua Tech applies nuclear-grade standards throughout the design and production of 1500V 250 kW string inverters to produce extremely reliable inverters featuring remarkable safety and service life for customers.
  • SPI250K-B-H is the 1st in the world with the function of active AFCI + Fire risk prevention. Upon detecting a DC arc fault, it can immediately activate electric isolation for self-protection, avoiding hidden dangers. In addition, it gives alarms to remind users in a timely manner through monitoring system.
  • The patented PID solution adopts decentralized suppression and repair of corresponding PV modules of the string inverter, enabling a round-the-clock operation with reliable voltage protection and repair through flexible settings and adjustments according to specific features of PV modules, thereby protecting PV modules and increasing the power generated.
  • With patented algorithms, strictly selected components and innovative design, IP66 protection/IP68 protection of key components, and multiple protections in C5 anti-corrosion test, it boasts superior adaptability to harsh environments, long-term outdoor operation, and high returns.

Intelligent and  high efficiency, provides stability throughout the life cycle

The system supports night SVG to achieve a quick response to reactive power within 30 ms. When there is rated active power, it can output 48% of reactive power capacity, greatly reducing equipment, power loss and the installation cost of power stations. The system supports PLC intelligent communication box to enable fast response and dispatching, and I-V curve scanning for timely detection of PV modules abnormalities, reducing losses by more than 60%. Integrating three key features “prevention, rapid troubleshooting, data analysis”, it can reduce LCOE by 1%.

PV+ESS ——Multi-dimensional support for the power grid

PV+ESS represents the inevitable future of energy transition. As a global leading power solution provider, Kehua has developed mature PV+ESS. SPI250K-B-H meets grid-friendly requirements for HVRT & LVRT , and is applicable to various grid construction and management projects. For grid troubleshooting, the system can intelligently record the power curve during the ride-through process for customers to learn real-time grid conditions along with a comprehensive analysis.Based on a new adaptive grid impedance dual-mode control algorithm, it can run in a weak grid (SCR<1.5). As shown in actual measurement, the waveform is stable and of high quality during HVRT&LVRT in grid-connected operations with equivalent grid-side inductance. Its reserved energy storage interfaces, plug-and-play functionality and high-efficiency supporting devices are also groundbreaking in the field of PV+ESS integration.

About Kehua:

With 32 years of extensive experience in power electronics and core technologies, Kehua Tech has become one of the world's leading power solution providers. Integrating cutting-edge AI and IoT applications, Kehua is committed to developing a digital and scenario-based intelligent power integrated management system for various scenarios. Engaged in renewable energy, high-end power, and cloud-based services, Kehua provides safe, reliable and efficient integrated and intelligent power management solutions for governments, financial, industrial, communications, transportation, Internet sectors and other customers in over 100 countries and regions.


Release date: 10th August 2020

Available from 10th August 2020

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