Evolving Fault - ABB REC670 Applications Manual

1MRK 511 401-UUS A
14.2.2.20
Bay control REC670 2.2 ANSI
Application manual
SMBRREC (79)
BJ-TRIP
OR INHIBIT
ZCVPSOF-TRIP
CCRBRF (50BF)
TRBU
ANSI05000315 V2 EN-US
Figure 115: Lock-out arranged with an external lock-out relay
SMBRREC (79)
BJ-TRIP
OR
INHIBIT
ZCVPSOF-TRIP
UNSUCCL
CCRBRF (50BF)
SOFTWARE
OR IO RESET
BJTRIP
MAN CLOSE
SMBRREC (79) CLOSE
SESRSYN (25)
AUTO STOP
MAN ENOK
ANSI05000316 V2 EN-US
Figure 116: Lock-out arranged with internal logic with manual closing going through
in IED

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
UNSUCCL
OR
SMPPTRC (94)
SETLKOUT
OR
CLLOUT
RESET LOCK-OUT
RSTLOUT
OR
OR
Section 14
SMBO
ELECTRICAL RESET
RELAY
Lock-out
RXMD1
11
SET
21
12
RESET
CLOSE COMMAND
MAIN ZAK CLOSE
ANSI05000315_2_en.vsd
SMBO
AND
CLOSE COMMAND
ANSI05000316_2_en.vsd
Control
M12391-217 v4
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