ABB REC670 Applications Manual page 349

1MRK 511 401-UUS A
Bay control REC670 2.2 ANSI
Application manual
IOM
INPUT
xx
xx
xx
xx
xx
xx
xx
xx
xx
xx
PROTECTION
OR
xxxx-TRIP
ZCVPSOF-TRIP
OR
ZMQPDIS (21)-TRIP
TRIP-TR2P
TRIP-TR3P
SESRSYN (25)-AUTOOK
ANSI04000136 V3 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 breaker-and-a-half, 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
SMBRREC (79)
ON BLOCKED
OFF
SETON
BLKON INPROGR
BLKOFF
ACTIVE
INHIBIT UNSUCCL
SUCCL
CBREADY
52a
PLCLOST CLOSECB
PERMIT1P
RESET
PREP3P
RI
READY
1PT1
2PT1
3PT1
RI_HS
3PT2
SKIPHS
3PT3
TRSOTF
3PT4
3PT5
THOLHOLD
TR2P
TR3P
SYNC
WAIT
RSTCOUNT
WFMASTER
Section 14
Control
IOM
OUTPUT
xx
xx
xx
xx
xx
xx
xx
xx
xx
xx
TRIP-P3PTR
GROUND RELAYS
OR
BLOCK
ANSI04000136-3-en.vsd
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