ABB REB670 - Automatic Continuation of the Auto Reclosing Sequence; Evolving Fault

CLOSE COMMAND
OR
SMBRREC (79)
OR
CCRBRF (50BF)
BJ-TRIP
ZCVPSOF-TRIP
INHIBIT
UNSUCCL
BJTRIP
ANSI05000316_2_en.vsd
SMPPTRC (94)
SMBO
AND
RESET LOCK-OUT
OR
OR
SESRSYN (25)
SOFTWARE
OR IO RESET
AUTO STOP
MAN ENOK
MAN CLOSE
SMBRREC (79) CLOSE
SETLKOUT
CLLOUT
RSTLOUT
ANSI05000316 V2 EN-US
Figure 127: Lock-out arranged with internal logic with manual closing going through
in IED
12.2.2.20 Evolving fault
M12391-217 v4
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.
12.2.2.21 Automatic continuation of the auto reclosing sequence
M12391-223 v5
The auto recloser can be programmed to proceed to the next auto reclosing shots (if
multiple shots are selected) even if start signals are not received from protection
Section 12 1MRK 505 370-UUS A
Control
326 Busbar protection REB670 2.2 ANSI
Application manual