ABB Relion 670 Series Applications Manual page 342

Section 15
Control
BU-TRIP
ZCVPSOF-TRIP
IEC05000315-WMF V4 EN-US
Figure 149: Lock-out arranged with an external lock-out relay
BU-TRIP
ZCVPSOF-TRIP
IEC05000316-WMF V4 EN-US
Figure 150: Lock-out arranged with internal logic with manual closing going through in
15.2.2.20 Evolving fault
An evolving fault starts as a single-phase fault which leads to single-phase tripping and then
the fault spreads to another phase. The second fault is then cleared by three-phase tripping.
The auto recloser will first receive a start signal (
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
TR3P . The single-phase auto reclosing sequence will then be stopped, and instead the timer, t1
3Ph , for three-phase auto reclosing will be started from zero. The sequence will continue as a
three-phase auto reclosing sequence, if it is a selected alternative reclosing mode. The second
fault which can be single-phase is tripped three-phase because the trip function (SMPPTRC) in
the IED has an evolving fault timer which ensures that the second fault is always tripped three-
phase. For other types of relays where the relays do not include this function, the
output (or the inverted
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.
336
SMBRREC
OR INHIBIT
UNSUCCL
CCRBRF
TRBU
SMBRREC
OR INHIBIT
UNSUCCL
Functional key,
CCRBRF
SOFTWARE
OR IO RESET
TRBU
MAN CLOSE
OR
SMBRREC CLOSE
SESRSYN
MANENOK
MANSYOK
IED
PERMIT1PH output) is used to prepare the other sub-system for three-
© Copyright 2017 Hitachi Power Grids. All rights reserved
SMBO
OR
SMPPTRC
OR SETLKOUT
CLLKOUT
RESET LOCK-OUT
RSTLKOUT
AND
OR
START ) without any three-phase signal ( TR3P ).
START signal and three-phase trip information,
1MRK 511 401-UEN Rev. K
Lock-out
RXMD1
11
21
12
CLOSE COMMAND
MAIN ZAK CLOSE
IEC05000315-4-en.vsd
SMBO
CLOSE COMMAND
IEC05 000 316-4-en.vsdx
Bay control REC670
Application manual
M12391-217 v4
PREP3PH