... Double MPPT 4.MTL string 5.human friendly design Solar Inverter Rainbow 4200TLSmart designTransformerless and double mppt topologyCompact design without ... EN61000, VDE0126, ENEL, AS3100, AS4777Mechanical DataDimension360mm*160mm*565mmWeight25KgString inverter features High reliability and high efficiency design, maximum efficiency is ... analysis)Yield calculation for users. 4.2 KW Solar On-grid Inverter