1MAC309294-MB F Section 5Control functionsRER620 287Technical Manual5.2.4.1 Active Phases Determination with SDAIGGIO BlocksFigure 143: SDAIGGIO function blockThe input section, consists of 6 modular supporting functional blocks calledSDAIGGIO1..6, collates various signal phase trip / pickup signals from different singlephase protection functions. It uses the logic described below to determine which phasesare to be activated for this reclose cycle, and tailors its outputs to be fed to the autorecloser/ output functions.SDAIGGIO 1 ..6A functional block diagram is shown in Figure 143. It shows one SDAIGGIO block forautorecloser function input. There are six such blocks altogether. They are not independentfunction blocks and they are instantiated as part of overall autoreclosing functionality.The Autoreclosing function allows a picked up / unfaulted phase to trip along with thefaulted phase. The picked up phase is tripped, as it is presumed to be a part of the samemulti-phase fault, though with a lower fault current. An unfaulted phase may also betripped in case it is not advisable for only one phase to remain energized after the breakeropens.SDAIGGIO 1-6Active_AActive_BActive_CActive_3PTripOutTripIn_ATripIn_BTripIn_CTripIn_3PTripIn_NPickupin_APickupin_BPickupin_CCbPos_aSettings:SinglePhaseMode - APAT, OPUP, or COAPOrder CodeRedoser Type = 1P or 3PCbPos_bCbPos_c
