1MAC309294-MB F Section 5
Control functions
RER620 289
Technical Manual
• Later, after “A” phase locks out, but before it is restored, “B” phase sees a fault, and
“C” is not picked up. Using the OPUP logic, only the “B” phase would have been
tripped. However, this would leave only the “C” phase CLOSED. In the OOAP mode,
the “C” phase will also be tripped, though it does not have a fault.
• Reclose operations are synchronized between poles.
APAT: (All Poles All the Time)
• In this case, the single phase function is disabled. The recloser operates as a three
phase recloser. However, we still have three actuators and three position sensors for
the three poles, so the controls must operate independently. However, for any fault,
the trip, reclose, lockout signals are issued to all three phases.
SDARREC “OR” logic function
The SDARREC has six SDAIGGIO functions. Each will operate independent of the
others. The “OR” logic function combines the “Active Phase” outputs from the six
SDAIGGIO blocks and generates one set of combined “Active Phase” outputs for use by
the output SDAOGGIO function. Its functional block is as shown in Figure 144 above. .
This entire "OR" logic along with output channels of SDAGGIO blocks connected to
SDARREC function block through fixed internal connections which are not visible in the
application configuration.
5.2.4.2 Autorecloser function (Core)
Figure 145: Autorecloser (core) function block
The autorecloser function accepts "TRIP" signals from the input functions and generates
the appropriate reclose / open / lockout signals, for use by the output function. The
operation of the auto-reclose function can be described by using a module diagram (Figure
146). All the blocks in the diagram are explained in the next sections.
AutoRecloser
Op (Reclose)
OpOpn (Open)
LO (Lockout)
InIni2
InIni1
InIni3
InIni4
Inini6
InIni5
CB_Pos
inProgress
Settings
BLOCK
RS_COUNT
RESET
REC_T_STD
REC_T_ELA
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