ISGA Series of grid-tied PV inverters features a transformerless design which does not require a cooling fan. It is available in 2kW, 3kW, 4kW and 5kW output sizes with a 240-VAC, 60-Hz, single-phase output and 6-kW to 15-kW, 120/208-VAC Wye or 240-VAC Delta, three-phase 60-Hz output. The inverter has an output efficiency up to 96.4%, with CEC ratings up to 95.5% and an input voltage range of 150 VCD to 450 VDC.