Sunway has released the STS-7~11KTL single-phase inverter solution for residential power plants. This series has five models – STS-7KTL, STS-8KTL, STS-9KTL, STS-10KTL and STS-11KTL – and features a maximum efficiency of 98.1 per cent and a European efficiency of 97.6 per cent.
The STS-7~11KTL has three solar PV inputs split into two maximum power point trackers (MPPTs), with a PV input voltage range of 80-600 V, allowing for up to 150 per cent PV overloading. It has a maximum PV input current of 15A and is compatible with standard 540 W solar panels. Dual MPPT tracking offers very precise tracking and great operational efficiency across a wide voltage range. Moreover, two MPPT trackers effectively allow the inverter to consider the PV as two distinct systems, resulting in increased adaptability, efficiency and space efficiency. The shells of the inverter and Wi-Fi dongle are manufactured from a single die-casting moulding structure, which prevents water or moisture from entering, and are covered with a special anti-corrosion spray to ensure safe outdoor use. From minus 30 degrees to plus 60 degrees Celsius, this device may be used in both low and high temperatures, including deserts where the temperature swings from hot during the day to cold at night.
The product offers various features such as multiple built-in protection mechanisms, including DC and AC surge protection, anti-island, short circuit, overvoltage, overcurrent and overtemperature protection, as well as reverse polarity protection, all of which, combined with ground fault and grid monitoring, ensures stable performance and safe operation.