ABB Relion 670 Series Applications Manual page 312

Section 14
Control
PROTECTION
xxxx-TRIP
ZCVPSOF-TRIP
ZMQPDIS (21)-TRIP
TRIP-TR2P
TRIP-TR3P
SESRSYN (25)-AUTOOK
ANSI04000136 V3 EN-US
Figure 123: Example of I/O-signal connections for a single-phase, two-phase or three-phase
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 124. In a
single breaker arrangement the setting is
setting for the first circuit breaker, the master, is
Priority = Low .
While the auto reclosing of the master is in progress, it issues the
unsuccessful reclosing the
activating the
value of setting
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
time, for the normal dead timers with the value of
to react almost immediately when the
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
sets a maximum wait time for the
of the slave is inhibited. If auto reclosing of the first breaker is unsuccessful, the
connected to the
latter.
306
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
auto reclosing sequence
WFMASTER output is also maintained by the UNSUCCL signal. When
WAIT input, in the auto recloser set as slave, every dead timer is changed to the
tSlaveDeadTime and holds back the auto reclosing operation. When the WAIT
WAIT input to reset. If the wait time expires, the reclosing cycle
INHIBIT input of the slave unit interrupts the auto reclosing sequence of the
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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
Priority = None . In a multi-breaker arrangement the
Priority = High and for the other circuit breaker
tSlaveDeadTime . The reason for shortening the
tSlaveDeadTime , is to give the slave permission
WAIT input resets. The mimimum settable time for
1MRK 511 401-UUS F
TRIP-P3PTR
GROUND RELAYS
BLOCK
ANSI04000136-3-en.vsd
WFMASTER output. After an
tWaitForMaster
UNSUCCL output
Bay control REC670
Application manual
M12399-87 v6