ABB Relion 670 Series Applications Manual page 301

1MRK 505 370-UUS Rev. K
PROTECTION
xxxx-TRIP
ZCVPSOF-TRIP
ZMQPDIS (21)-TRIP
TRIP-TR2P
TRIP-TR3P
SESRSYN (25)-AUTOOK
ANSI04000136 V3 EN-US
Figure 137: Example of I/O-signal connections for a single-phase, two-phase or three-phase auto
Setting recommendations for multi-breaker arrangements
Sequential reclosing in multi-breaker arrangements, like breaker-and-a-half, double breaker and ring bus,
is achieved by giving the two line breakers different priorities. Refer to figure 138. In a single breaker
arrangement the setting is Priority = None. In a multi-breaker arrangement the setting for the first circuit
breaker, the master, is Priority = High and for the other circuit breaker Priority = Low.
While the auto reclosing of the master is in progress, it issues the WFMASTER output. After an
unsuccessful reclosing the WFMASTER output is also maintained by the UNSUCCL signal. When
activating the WAIT input, in the auto recloser set as slave, every dead timer is changed to the value of
setting tSlaveDeadTime and holds back the auto reclosing operation. When the WAIT input is reset at
the time of a successful reclosing of the first circuit breaker, the slave is released to continue the
reclosing sequence after the set tSlaveDeadTime. The reason for shortening the time, for the normal
dead timers with the value of tSlaveDeadTime, is to give the slave permission to react almost
immediately when the WAIT input resets. The mimimum settable time for tSlaveDeadTime is 0.1sec
because both master and slave should not send the breaker closing command at the same time. The
slave should take the duration of the breaker closing time of the master into consideration before sending
the breaker closing command. A setting tWaitForMaster sets a maximum wait time for the WAIT input to
reset. If the wait time expires, the reclosing cycle of the slave is inhibited. If auto reclosing of the first
breaker is unsuccessful, the UNSUCCL output connected to the INHIBIT input of the slave unit interrupts
the auto reclosing sequence of the latter.
Busbar protection REB670
Application manual
IOM
SMBRREC (79)
INPUT
xx
ON
xx
OFF
xx
BLKON
xx
BLKOFF
xx
INHIBIT
xx
xx CBREADY
xx
52a
xx PLCLOST
xx
RESET
RI
OR
RI_HS
SKIPHS
TRSOTF
OR
THOLHOLD
TR2P
TR3P
SYNC
WAIT
RSTCOUNT
reclosing sequence
© 2017 - 2021 Hitachi Power Grids. All rights reserved
IOM
OUTPUT
xx
BLOCKED
xx
SETON
xx
INPROGR
xx
ACTIVE
xx
UNSUCCL
xx
SUCCL
xx
xx
xx
CLOSECB
xx
PERMIT1P
PREP3P
READY
1PT1
OR
2PT1
3PT1
3PT2
3PT3
3PT4
3PT5
WFMASTER
TRIP-P3PTR
GROUND RELAYS
BLOCK
ANSI04000136-3-en.vsd
Section 12
Control
M12399-87 v6
295