• Only such CBBs that are set for the next shot in the sequence can be accepted for
execution. For example, if the next shot in the sequence should be shot 2, a request
from CBB set for shot 3 is rejected.
• Any CBB that is set for the next shot or any of the following shots can be accepted
for execution. For example, if the next shot in the sequence should be shot 2, also
CBBs that are set for shots 3, 4 and 5 are accepted. In other words, shot 2 can be
ignored.
In case there are multiple CBBs allowed for execution, the CBB with the smallest
number is chosen. For example, if CBB2 and CBB4 request an execution, CBB2 is
allowed to execute the shot.
The auto-reclose function can perform up to five auto-reclose shots or cycles.
9.4.6.3 Configuration examples
OR
CB_TRIP
Circuit breaker position
information from binary input
Conditions to verify if circuit breaker
is ready to be reclosed
CB_ CLOSE
FPHLPTOC
I_A
I_B
START
OPERATE
I_C
BLOCK
ENA_ MULT
PHHPTOC
I_A
I_B
START
OPERATE
I_C
BLOCK
ENA_MULT
FEFLPTOC
Io
BLOCK
START
OPERATE
ENA_ MULT
DARREC
OPEN_CB
CLOSE_CB
CMD_WAIT
INPRO
LOCKED
PROT_CRD
UNSUC_ RECL
DEL_INIT_4
DEL_INIT_3
DEL_INIT_2
INIT_6
INIT_5
INIT_4
INIT_3
INIT_2
INIT_1
SYNC
INC_ SHOTP
CB_ READY
CB_POS
RECL_ON
INHIBIT_ RECL
BLK_ RCLM_T
BLK_ RECL_T
BLK_ THERM
AR_ON
READY
GUID-EE4B73E8-CB1A-41DD-A49B-3049347C3EC8 V1 EN
Figure 342: Example connection between protection and autoreclosing functions
in protection relay configuration
It is possible to create several sequences for a configuration.
Autoreclose sequences for overcurrent and non-directional earth-fault protection
applications where high speed and delayed autoreclosings are needed can be as
follows:
Section 9 1MRS758755 A
Control functions
654 REC615 and RER615
Technical Manual
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