ABB RER620, Technical Manual

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Section 5
Control functions
RER620 287
Technical Manual
5.2.4.1 Active Phases Determination with SDAIGGIO Blocks
Figure 143: SDAIGGIO function block
The input section, consists of 6 modular supporting functional blocks called
SDAIGGIO1..6, collates various signal phase trip / pickup signals from different single
phase protection functions. It uses the logic described below to determine which phases
are to be activated for this reclose cycle, and tailors its outputs to be fed to the autorecloser
/ output functions.
SDAIGGIO 1 ..6
A functional block diagram is shown in Figure 143. It shows one SDAIGGIO block for
autorecloser function input. There are six such blocks altogether. They are not independent
function blocks and they are instantiated as part of overall autoreclosing functionality.
The Autoreclosing function allows a picked up / unfaulted phase to trip along with the
faulted phase. The picked up phase is tripped, as it is presumed to be a part of the same
multi-phase fault, though with a lower fault current. An unfaulted phase may also be
tripped in case it is not advisable for only one phase to remain energized after the breaker
opens.
SDAIGGIO 1-6
Active_A
Active_B
Active_C
Active_3P
TripOut
TripIn_A
TripIn_B
TripIn_C
TripIn_3P
TripIn_N
Pickupin_A
Pickupin_B
Pickupin_C
CbPos_a
Settings:
SinglePhaseMode - APAT, OPUP, or COAP
Order Code
Redoser Type = 1P or 3P
CbPos_b
CbPos_c