ABB RELION 670 Series Applications Manual page 641

1MRK 505 343-UEN B
The inputs are combined with the phase selection logic and the start signals from the phase
selector must be connected to the inputs PSL1, PSL2 and PSL3 to achieve the tripping on the
respective single-phase trip outputs TRL1, TRL2 and TRL3. The Output TRIP is a general trip
and activated independent of which phase is involved. Depending on which phases are
involved the outputs TR1P, TR2P and TR3P will be activated as well.
When single-phase tripping schemes are used a single-phase autoreclosing attempt is
expected to follow. For cases where the autoreclosing is not in service or will not follow for
some reason, the input Prepare Three-phase Trip P3PTR must be activated. This is normally
connected to the respective output on the Synchrocheck, energizing check, and synchronizing
function SESRSYN but can also be connected to other signals, for example an external logic
signal. If two breakers are involved, one TR block instance and one SESRSYN instance is used
for each breaker. This will ensure correct operation and behavior of each breaker.
The output Trip 3 Phase TR3P must be connected to the respective input in SESRSYN to switch
SESRSYN to three-phase reclosing. If this signal is not activated SESRSYN will use single-phase
reclosing dead time.
The trip logic also has inputs TRINL1, TRINL2 and TRINL3 where phase-selected trip signals can
be connected. Examples can be individual phase inter-trips from remote end or internal/
external phase selected trip signals, which are routed through the IED to achieve, for example
SESRSYN, Breaker failure, and so on. Other back-up functions are connected to the input TRIN
as described above. A typical connection for a single-phase tripping scheme is shown in
figure 392.
TR3P
TR3P
IEC05000545 V3 EN-US
Figure 392: The trip logic function SMPPTRC used for single-phase tripping application
Application manual
Note also that if a second line protection is utilizing the same SESRSYN the
three-phase trip signal must be generated, for example by using the three-trip
relays contacts in series and connecting them in parallel to the TR3P output
from the trip block.
Distance protection zone 2 TRIP
Distance protection zone 3 TRIP
³1
Overcurrent protection TRIP
Distance protection zone 1 TRIP
Phase Selection
PSL1
PSL2
PSL3
SMBRREC
PREP3P
SMPPTRC
BLOCK TRIP
BLKLKOUT TRL1
TRIN TRL2
TRINL1 TRL3
TRINL2
TR1P
TRINL3 TR2P
TR3P
PSL1
CLLKOUT
PSL2
PSL3
1PTRZ
1PTREF
P3PTR
SETLKOUT
RSTLKOUT
Section 16
Logic
IEC05000545-3-en.vsd
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