ABB REC670 Applications Manual page 326

Section 14
Control
320
BIM
INPUT
xx
xx
xx
xx
xx
xx
xx
xx
xx
xx
PROTECTION
OR
xxxx-TRIP
ZCVPSOF-TRIP
TRIP-TR2P
TRIP-TR3P
SESRSYN-AUTOOK
IEC04000136 V4 EN-US
Figure 118: Example of I/O-signal connections for a single-phase, two-phase or
three-phase auto reclosing sequence
Setting recommendations for multi-breaker arrangements
Sequential reclosing in multi-breaker arrangements, like 1 1/2-breaker, double
breaker and ring bus, is achieved by giving the two line breakers different
priorities. Refer to figure 119. 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
SMBRREC
ON
BLOCKED
OFF
SETON
BLKON
INPROGR
BLKOFF
ACTIVE
INHIBIT
UNSUCCL
SUCCL
CBREADY
CBCLOSED
PLCLOST CLOSECB
PERMIT1P
RESET
PREP3P
START
READY
1PT1
2PT1
STARTHS 3PT1
3PT2
SKIPHS
3PT3
TRSOTF
3PT4
3PT5
THOLHOLD
TR2P
TR3P
SYNC
WAIT
RSTCOUNT
WFMASTER
1MRK 511 401-UEN A
BOM
OUTPUT
xx
xx
xx
xx
xx
xx
xx
xx
xx
xx
TRIP-P3PTR
EF4PTOC-BLOCK
OR
=IEC04000136=4=en=Original.vsd
M12399-87 v6
Bay control REC670 2.2 IEC
Application manual