ANSI04000136-3-en.vsd
ON
OFF
BLKON
BLKOFF
INHIBIT
BLOCKED
SETON
INPROGR
ACTIVE
UNSUCCL
SUCCL
CLOSECB
PERMIT1P
3PT1
WFMASTER
RESET
1PT1
2PT1
TRSOTF
TR2P
TR3P
SYNC
INPUT
xx
xx
xx
xx
xx
xx
xx
xx
xx
xx
OR
OR
OUTPUT
xx
OR
PROTECTION
xxxx-TRIP
ZCVPSOF-TRIP
ZMQPDIS (21)-TRIP
TRIP-TR2P
TRIP-TR3P
SESRSYN (25)-AUTOOK
IOM IOM
SMBRREC (79)
xx
xx
xx
xx
xx
xx
xx
xx
xx
SKIPHS
THOLHOLD
WAIT
RSTCOUNT
3PT2
3PT3
3PT4
3PT5
READY
PREP3P
TRIP-P3PTR
CBREADY
52a
PLCLOST
RI_HS
RI
GROUND RELAYS
BLOCK
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
M12399-87 v6
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
1MRK 511 401-UUS A Section 14
Control
Bay control REC670 2.2 ANSI 343
Application manual
To Next Page
Loading...
