3K/4K/5K/6K/8K/9K/10K/12K/13K/15K/17K/20K   S5-GR3P(3-20)K three-phase series string inverter are reliable preferred equipment for residential, small industrial and commercial pv stations.Smaller size, higher efficiency, a variety of power models available for selection. Adopt two MPPT access, more flexible and efficient.