ABB RELION Series Technical Manual page 642

Section 9
Control functions
636
• Str 3 delay shot 1
• Str 3 delay shot 2
• Str 3 delay shot 3
• Str 3 delay shot 4
Time delay settings for the DEL_INIT_4 signal
• Str 4 delay shot 1
• Str 4 delay shot 2
• Str 4 delay shot 3
• Str 4 delay shot 4
Normally, only two or three reclosing attempts are made. The third and fourth
attempts are used to provide the so-called fast final trip to lockout.
FPHLPTOC
I_A OPERATE
I_B START
I_C
BLOCK
ENA_MULT
CB_POSITION
CB_READY
GUID-AD00D3A3-0ACC-405B-82A5-3D340BBAEDE4 V1 EN
Figure 329: Autoreclosing configuration example
Delayed DEL_INIT_2...4 signals are used only when the autoreclosing shot is
initiated with the start signal of a protection stage. After a start delay, the AR function
opens the circuit breaker and an autoreclosing shot is initiated. When the shot is
initiated with the trip signal of the protection, the protection function trips the circuit
breaker and simultaneously initiates the autoreclosing shot.
If the circuit breaker is manually closed against the fault, that is, if SOTF is used, the
fourth time delay can automatically be taken into use. This is controlled with the
internal logic of the AR function and the Fourth delay in SOTF parameter.
A typical autoreclose situation is where one autoreclosing shot has been performed
after the fault was detected. There are two types of such cases: operation initiated with
protection start signal and operation initiated with protection trip signal. In both cases,
the autoreclosing sequence is successful: the reclaim time elapses and no new
sequence is started.
DARREC
INIT_1 OPEN_CB
INIT_2 CLOSE_CB
INIT_3 CMD_WAIT
INIT_4 INPRO
LOCKED
INIT_5
PROT_CRD
INIT_6
UNSUC_RECL
DEL_INIT_2
DEL_INIT_3 AR_ON
DEL_INIT_4
READY
BLK_RECL_T
BLK_RCLM_T
BLK_THERM
CB_POS
CB_READY
INC_SHOTP
INHIBIT_RECL
RECL_ON
SYNC
1MRS758755 A
OR
CB_TRIP
CB_CLOSE
REC615 and RER615
Technical Manual