2.5K/3K/3.6K/4K/4.6K/5K/6K   2.5-6kW Single-phase series string inverter's efficiency has improved dramatically. Solis-1P(2.5-6)kW-4G series are suitable for the installation of single-phase input pv system of residential and adopt ultra-high switching frequency, ultra-thin single four-layer board design can greatly reduce the risk caused by the connector.