... SS Advantages1) High quality of power generation connected to the grid: THDi < 1%.2) Maximize Solar Energy: High MPPT ... Parameters of GW4000-SSModel nameGW4000-SSDC input DataMax. PV-generator power [W]4600Max. DC Voltage [V]580MPPT voltage ... 1-1/A1, RD1663, ENEL, G83,G59, SAAAC grid frequencyAccording to VDE 0126-1-1/A1, RD1663, ENEL, ... warranty[years]5/10( optional) GW4000-SS grid tie inverter china