The company said the products have been designed to match the voltage and phase of the grid sine wave AC waveform.
The transformer-free products have a power range of 3-6 kW and efficiency of 97.8% – rated 97.5% under the EU system. The devices can operate at temperatures ranging from –25 degrees Celsius to 60 degrees Celsius, and Kstar said they feature less than 3% total harmonic distortion.
The smaller inverters, with a 3-3.6 kW rating, measure 380 by 380 by 15mm and weigh 10kg. The 4-6 kW devices have the same dimensions but weigh in 1kg heavier.
Kstar said its new inverters are equipped with low-temperature resistance; reactive power control; optional DC switches, WiFi plugs and GPRS plugs; plus natural cooling. They also offer DC power up to a 1.35 ratio; IP65 protection against contact and dust entry; and DC/AC surge protection, according to the manufacturer.
“The new series will be available for sale starting from May,” the company told pv magazine.
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