Advanced technology for maximum power point tracking(MPPT) (>98%)MPPT efficiency Wide input voltage range ModelSDS-1500WIsolation typeTransformerless DC InputMPPT Voltage ... ,CertificationsCE, VDE0126-1, AS4777, AS3100, G83/1, G59. ISO9001:2000 Hydro turbine grid tie inverter 1.5kw