ABB Relion 670 Series Applications Manual page 295

1MRK 505 370-UUS Rev. K
BJ-TRIP
ZCVPSOF-TRIP
ANSI05000315 V2 EN-US
Figure 134: Lock-out arranged with an external lock-out relay
BJ-TRIP
ZCVPSOF-TRIP
CCRBRF (50BF)
ANSI05000316 V2 EN-US
Figure 135: Lock-out arranged with internal logic with manual closing going through in IED
12.2.2.20 Evolving fault
An evolving fault starts as a single-phase fault which leads to single-pole tripping and then the fault
spreads to another phase. The second fault is then cleared by three-pole tripping.
The auto recloser will first receive a start signal (START) without any three-phase signal (TR3P). The
auto recloser will start a single-phase auto reclosing sequence, if programmed to do so. At the evolving
fault clearance there will be a new START signal and three-phase trip information, TR3P. The single-
phase auto reclosing sequence will then be stopped, and instead the timer, t1 3Ph, for three-pole auto
reclosing will be started from zero. The sequence will continue as a three-pole auto reclosing sequence,
if it is a selected alternative reclosing mode. The second fault which can be single-phase is tripped three-
pole because the trip function (SMPPTRC) in the IED has an evolving fault timer which ensures that
second fault is always tripped three-pole. For other types of relays where the relays do not include this
function, the PREP3PH output (or the inverted PERMIT1PH output) is used to prepare the other sub-
system for three-phase tripping. This signal will, for evolving fault situations, be activated a short time
after the first trip has reset and will thus ensure that new starts (trips) will be three phase.
Busbar protection REB670
Application manual
SMBRREC (79)
OR
INHIBIT
UNSUCCL
CCRBRF (50BF)
TRBU
SMBRREC (79)
OR
INHIBIT
UNSUCCL
SOFTWARE
OR IO RESET
BJTRIP
MAN CLOSE
OR
SMBRREC (79) CLOSE
SESRSYN (25)
AUTO STOP
MAN ENOK
© 2017 - 2021 Hitachi Power Grids. All rights reserved
SMBO
OR
MAIN ZAK CLOSE
SMPPTRC (94)
SETLKOUT
OR
CLLOUT
RESET LOCK-OUT
RSTLOUT
AND
OR
ELECTRICAL RESET
RELAY
Lock-out
RXMD1
11
SET
21
12
RESET
CLOSE COMMAND
ANSI05000315_2_en.vsd
SMBO
CLOSE COMMAND
ANSI05000316_2_en.vsd
Section 12
Control
M12391-217 v4
289