SMA took their most advanced grid-tie inverter technology and added an outstanding set of features specifically for off-grid systems.  The Sunny Island SI5048U is an extremely robust and sophisticated power inverter suitable for both off-grid systems and utility backup,  It provides clean and stable 120 VAC output, and has incredible surge capabilities and excellent AC output characteristics.  It also helps optimize the overall life of your batteries through an advanced battery management system.

A unique feature of Sunny Island inverters is their ability to facilitate coupling of all AC power generation sources, simplifying system expansion and making for efficient use of available AC power.  When used for utility backup, they give you seamless transfer from existing Sunny Boy inverters in the event of a daytime grid outage.  Sunny Island inverters are simple to use and flexible.  Multiple inverters can be “stacked” for single-phase, split-phase or three-phase applications.

Features:

• Certified to the new UL 1741 / UL 1998 standards
• 5-year warranty
• Suitable for systems from 3 kW to 26 kW
• AC coupling of all energy sources
• DC coupling with optional equipment
• 1, 3 and split-phase, connectable in parallel
• Excellent overload characteristics for motor starting
• Long battery service life due to optimum battery management system