SMA Smartformer for Sunny Island, Transformer and Distribution Box for operation of 120/240 V, 60 Hz split-phase loads SI-TD-BOX


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The Smartformer is the complete solution for off-grid and battery back-up systems up to eight kilowatts. It acts simultaneously as AC distribution and a 120/240 V autoformer. The autoformer provides step-up and stepdown options to supply loads with 120 V and 240 V using a Sunny Island and a Sunny Boy, with high efficiency over the entire power spectrum. Thanks to the pre-wired bypass function, the PV system can be easily bridged via a robust switch for maintenance. The optimized transformer  overload  protection  and  a  load shedding relay provide extra protection to the system. The Smartformer makes the stand-alone power supply simple and reliable.

SMA Off-Grid Power Supply Systems

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