ABB RELION 670 Series Applications Manual page 207

1MRK 511 364-UUS A
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-pole 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-pole Trip P3PTR must be activated. This is normally connected to the
respective output on the Synchronism check, energizing check, and synchronizing function
SESRSYN (25) 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 (25) 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 (25) to
switch SESRSYN (25) to three-phase reclosing. If this signal is not activated SESRSYN (25) will use
single-phase reclosing dead time.
The trip logic also has inputs TRIN_A, TRIN_B and TRIN_C 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
(25), Breaker failure, and so on. Other back-up functions are connected to the input TRIN as
described above. A typical connection for a single-pole tripping scheme is shown in figure 76.
Distance protection zone 2 TRIP
Distance protection zone 3 TRIP
TR3P
TR3P
ANSI05000545 V4 EN-US
Figure 76: The trip logic function SMPPTRC (94) used for single-pole tripping application
Application manual
Note also that if a second line protection is utilizing the same SESRSYN (25) the
three-pole 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.
OR
Overcurrent protection TRIP
Distance protection zone 1 TRIP
Phase Selection
PS_A
PS_B
PS_C
SMBRREC (79)
PREP3P
SMPPTRC (94)
BLOCK TRIP
BLKLKOUT TR_A
TRIN_3P
TR_B
TR_C
TRINP_A
TRIN_B
TR1P
TRINL3 TR2P
TR3P
PS_A
CLLKOUT
PS_B
PS_C
1PTRZ
1PTREF
P3PTR
SETLKOUT
RSTLKOUT
Section 15
ANSI05000545-4-en.vsd
Logic
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