... starting signal; 3)CE/CCC/ISO certificates 3Phase Automatic or Manual Transfer Switches for Generator1)rated voltage:AC220,380,400,440,660V ... (ATSE) is suitable to the power supply system of AC660V,rated frequency50/60Hz and 250VDC.the applied places like fire control, ... not allowed to be interrupted. The main and standby power can be power grid, automatic starting genset, battery etc. StructureATSE is ...