ABB RET650 Applications Manual page 254

Section 12
Logic
12.1.2.3
12.1.2.4
248
Protection functions with 3
phase trip, for example time
delayed overcurrent protection
Phase segregated trip L1, L2 and L3
from example line differential or
distance protection
Phase selection L1, L2 and L3 from
external phase selection logic
Trip by communication scheme of
distance protection if required to
provide a single pole trip
Trip by communication scheme of
earth fault protection if required to
provide single pole trip
SMBRREC
To prepare 3 phase trip
for any trip signal
TR3P
To activate lockout for any trip
To reset lockout
IEC05000545 V5 EN-US
Figure 91: The trip logic function SMPPTRC used for single-phase tripping
application
Single-, two- or three-phase tripping
The single-/two-/three-phase tripping mode provides single-phase tripping for
single-phase faults, two-phase tripping for two-phase faults and three-phase
tripping for three-phase faults. The operating mode is always used together with an
autoreclosing scheme with setting ARMode = 1/2/3 ph or ARMode = 1/2 ph.
The functionality is very similar to the single-phase scheme described above.
However, in addition to the connections for single phase SMBRREC must also be
informed that the trip is two phases by connecting the output TR2P to the input
TR2P in the SMBRREC function.
Lock-out
The SMPPTRC function block is provided with possibilities to initiate lock-out.
The lock-out can be set to only activate the block closing output CLLKOUT or
initiate the block closing output and also maintain the trip signal output TR3P
(latched trip).
OR
PREP3P
1MRK 504 169-UEN A
SMPPTRC
BLOCK TRIP
TRL1
BLKLKOUT
TRIN TRL2
TRINL1
TRL3
TRINL2
TR1P
TRINL3
TR2P
PSL1 TR3P
PSL2 CLLKOUT
PSL3 START
1PTRZ STL1
1PTREF
STL2
P3PTR
STL3
SETLKOUT
STN
RSTLKOUT
FW
STDIR
REV
IEC05000545-5-en.vsdx
Transformer protection RET650 2.2 IEC
Application manual
M14828-15 v5
M14828-18 v5