The Sunny Island 5048U provides 5000 watts of clean and stable 120 VAC output continuously at 25 Deg. C. Multiple units can be used together for single-phase, split-phase or three-phase applications and can be paralleled for increased power requirements. The inverter works with a 48V battery bank and includes an internal battery charger that can supply up to 100 Amps to the battery when running in charge mode. Transition from charge to invert mode is only 0.02 seconds, so even your computer will stay on-line. A transfer relay with a pass through rating of 56A at 120V is also included. (This inverter is not listed as an approved PV inverter with the CEC, but it can provide battery backup to loads and allow other SMA Grid-Tied inverters to function during power outages).
The Sunny Island also features the unique ability to facilitate AC coupling of all power generation sources. This makes for efficient use of available AC power and greatly simplifies system expansion. Certified to the new UL 1741 / UL 1998 standards. Suitable for systems from 3 kW to 26 kW, allows DC coupling with optional equipment, excellent overload characteristics for motor starting, optimum battery management system facilitates long battery life.
Features: * Suitable for systems from 3 kW to 78 kW. * AC coupling of all energy sources. * Fully automatic uninterrupted operation. * 1 and 3 phase, connectable in parallel and modularly extendable. * Excellent overload characteristics. * Long battery service life due to optimum battery management system and state of charge evaluation * Robust, reliable and durable * ergonomic aluminum enclosure. * High efficiency and OptiCool active ventilation system
Output Data: Nominal AC voltage: 230V Grid Frequency: 45 - 65 Hz Continuos AC output: 5000 - 4000W Nominal AC Current: 21A Max Current: 100A
Input Data: Input Voltage: 230V Input Frequency: 40 - 70 Hz Max Ac input current: 56A Max Input Power: 12.8 kW
SMA America Inverter - Sunny Island 
The Sunny Island 5048U provides 5000 watts of clean and stable 120 VAC output continuously at 25 Deg. C. Multiple units can be used together for single-phase, split-phase or three-phase applications and can be paralleled for increased power requirements. The inverter works with a 48V battery bank and includes an internal battery charger that can supply up to 100 Amps to the battery when running in charge mode. Transition from charge to invert mode is only 0.02 seconds, so even your computer will stay on-line. A transfer relay with a pass through rating of 56A at 120V is also included. (This inverter is not listed as an approved PV inverter with the CEC, but it can provide battery backup to loads and allow other SMA Grid-Tied inverters to function during power outages).