Lock-out
RXMD1
11
12
21
MAIN ZAK CLOSE
CLOSE COMMAND
SMBO
OR
SMBRREC (79)
OR
CCRBRF (50BF)
BJ-TRIP
ZCVPSOF-TRIP
INHIBIT
UNSUCCL
TRBU
ANSI05000315_2_en.vsd
SET
RESET
ELECTRICAL RESET
RELAY
ANSI05000315 V2 EN-US
Figure 115: Lock-out arranged with an external lock-out relay
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 116: Lock-out arranged with internal logic with manual closing going through
in IED
14.2.2.20 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
1MRK 511 401-UUS A Section 14
Control
Bay control REC670 2.2 ANSI 335
Application manual