The Windy Boy 5000A and 6000A not only feature a maximum efficiency of 96.1 percent, but are also suited for the development of three-phase grid-feeding wind energy plants. The integrated SMA Power Balancer prevents undue load unbalance, and the plant is also able to feed-in even if individual phases fail. The weather-proof enclosure and the wide temperature range allow for installation at almost any location. Thanks to the OptiCool ventilation system, the equipment works at outdoor temperatures of up to 45 ?C with maximum output. And in case of a problem: the worldwide SMA Service and comprehensive warranty program provide maximum security.