The STT-15-30KTL-SE(-S) inverter
Image: Sunways
Sunways has developed new three-phase inverters for residential and small commercial rooftop PV projects.
The China-based inverter manufacturer said its new STT-15-30KTL-SE(-S) inverters support up to 110% AC overload. “The 150% DC overload capacity gives users the benefit of installing additional PV modules, ensuring greater energy yield during off-peak solar hours,” the company said in a statement.
The line consists of five versions, with powers ranging from 15 kW to 30 kW. The inverters measure 550mm x 410mm x 199mm and weigh 27.4kg.
The transformerless inverters are equipped with two MPPT points (Maximum Power Point Tracking), with an efficiency of up to 98.6% and a European efficiency of up to 98.2%. The MPPT voltage range is from 200 V to 950 V and the maximum input voltage is 1,100 V.
The inverters have protection degree IP66 and operate within a temperature range of -30 C to 60 C. They are supplied with integrated overvoltage protection for both DC and AC.
“The STT-15-30KTL-SE(-S) inverter features an optional Arc Fault Circuit Interrupter (AFCI), which helps detect and mitigate arc faults, improving the safety and reliability of the system,” according to the manufacturer. “The inverter design supports string currents up to 20 A, allowing the installation of higher current solar panels that are becoming increasingly common on the market.”
The new products also feature a real-time temperature monitoring and protection system for multiple internal power transistors
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