ABB RED615 - Page 81

The overcurrent protection, negative-sequence overcurrent
protection, phase discontinuity, earth-fault protection, residual
overvoltage protection, phase overvoltage and undervoltage
protection are all used as backup protection against line differential
protection.
The backup protection operated information is available at binary output X110:SO2
which can be used for external alarm purpose.
The optional autoreclosing function is configured to be initiated by operate signals
from a number of protection stages through the INIT_1...6 inputs. It is possible to
create individual autoreclose sequences for each input.
The autoreclosing function can be inhibited with the INHIBIT_RECL input. By
default, few selected protection function operations are connected to this input. A
control command to the circuit breaker, either local or remote, also blocks the
autoreclosing function via the CBXCBR1-SELECTED signal.
The circuit breaker availability for the autoreclosing sequence is expressed with the
CB_READY input in DARREC1. The signal, and other required signals, are connected
to the CB spring charged binary inputs in this configuration. The open command from
the autorecloser is connected directly to binary output X100:PO3, whereas close
command is connected directly to binary output X100:PO1.
DARREC1
INIT_1
INIT_2
INIT_3
INIT_4
INIT_5
INIT_6
DEL_INIT_2
DEL_INIT_3
DEL_INIT_4
BLK_RECL_T
BLK_RCLM_T
BLK_THERM
CB_POS
CB_READY
INC_SHOTP
INHIBIT_RECL
RECL_ON
SYNC
OPEN_CB
CLOSE_CB
CMD_WAIT
INPRO
LOCKED
PROT_CRD
UNSUC_RECL
AR_ON
READY
ACTIVE
OR6
B1
B2
B3
B4
B5
B6
O
OR6
B1
B2
B3
B4
B5
B6
O
OR6
B1
B2
B3
B4
B5
B6
O
X120_BI3_CB_OPENED
DARREC1_OPEN_CB
DARREC1_CLOSE_CB
X
110_BI3_GAS_PRESSURE_ALARM
X110_BI4_CB_SPRING_CHARGED
PHIPTOC1_OPERATE
DPHLPDOC2_OPERATE
DPHHPDOC1_OPERATE
NSPTOC1_OPERATE
NSPTOC2_OPERATE
EFPADM2_OPERATE
EFPADM3_OPERATE
INTRPTEF1_OPERATE
PDNSPTOC1_OPERATE
DEFHPDEF1_OPERATE
DEFLPDEF2_OPERATE
WPWDE2_OPERATE
WPWDE3_OPERATE
CBXCBR1_SELECTED
LNPLDF_LS_OPERATE
DARREC1_UNSUC_RECL
DARREC1_INPRO
GUID-94B242D2-EE8E-4E0B-B0D4-774317C8FC70 V1 EN
Figure 75: Autoreclosing function
Circuit breaker failure protection CCBRBRF1 is initiated via the START input by a
number of different protection functions available in the protection relay. The circuit
breaker failure protection function offers different operating modes associated with
the circuit breaker position and the measured phase and residual currents.
The circuit breaker failure protection function has two operating outputs: TRRET and
TRBU. The TRRET operate output is used for retripping its own breaker through
TRPPTRC2_TRIP. The TRBU output is used to give a backup trip to the breaker
1MRS758127 C Section 3
RED615 standard configurations
RED615 75
Application Manual