T1PTTR1
BLK_OPR
ENA_MULT
TEMP_AMB
OPERATE
START
ALARM
BLK_CLOSE
T2PTTR1
BLOCK
TEMP_AMB
OPERATE
START
ALARM
BLK_CLOSE
T1PTTR1_BLK_C LOSE
T2PTTR1_BLK_C LOSE
T1PTTR1_OPERATE
T2PTTR1_OPERATE
T1PTTR1_START
T2PTTR1_ALARM
T1PTTR1_ALARM
T2PTTR1_START
GUID-C71ADCD1-5E9F-47CF-AF75-D8CD007C423A V1 EN
Figure 22: Thermal overcurrent protection function
The negative-sequence overcurrent protection, phase discontinuity
protection and earth-fault 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...5 inputs. It is possible to
create individual autoreclosing 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 the close
command is connected directly to binary output X100:PO1.
1MRS758127 C Section 3
RED615 standard configurations
RED615 47
Application Manual
To Next Page
Loading...
