solar energy,solar product,solar system,SG30K3 is using low-frequency isolation transformer for protection purpose for outdoor. solar energy,solar product,solar systemGeneral ... short-circuit protection, islanding protection, over-heat protection·Over-load protection·Standards complied: EN61000-6-1, EN61000-6-2 ... DataW | H | D820|1964|646 (mm)Weight400kg... solar energy,solar product,solar system