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T1PTTR1
BLK_OPR
ENA_MULT
TEMP_AMB
OPERATE
START
ALARM
BLK_CLOSE
T1PTTR1_START
T1PTTR1_OPERATE
T1PTTR1_ALARM
GUID-5995DF50-E527-4A1A-8704-5D0E283131CF V1 EN
Figure 569:
Thermal overcurrent protection function
Circuit breaker failure protection CCBRBRF1 is initiated via the
START
input by
number of different protection functions available in the IED. The 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
feeding upstream. For this purpose, the
TRBU
operate output signal is connected to the
binary output X100:PO2.
CCBRBRF1
BLOCK
START
POSCLOSE
CB_FAULT
CB_FAULT_AL
TRBU
TRRET
OR6
B1
B2
B3
B4
B5
B6
O
OR6
B1
B2
B3
B4
B5
B6
O
OR6
B1
B2
B3
B4
B5
B6
O
CCBRBRF1_TRBU
X120_BI2_CB_CLOSED
PHIPTOC1_OPERATE
PHHPTOC1_OPERATE
PHLPTOC2_OPERATE
EFLPTOC1_OPERATE
EFHPTOC1_OPERATE
EFIPTOC1_OPERATE
ARCSARC1_OPERATE
ARCSARC2_OPERATE
ARCSARC3_OPERATE
CCBRBRF1_TRRET
GUID-39F151C5-77E0-4268-99D6-0F172571155C V1 EN
Figure 570:
Circuit breaker failure protection function
Three arc protection ARCSARC1...3 stages are included as an optional function. The
arc protection offers individual function blocks for three arc sensors that can be
connected to the IED. Each arc protection function block has two different operation
modes, that is, with or without the phase and residual current check.
The operate signals from ARCSARC1...3 are connected to both trip logic TRPPTRC1
and TRPPTRC2. If the IED has been ordered with high speed binary outputs, the
individual operate signals from ARCSARC1...3 are connected to dedicated trip logic
TRPPTRC3...5. The outputs of TRPPTRC3...5 are available at high speed outputs
X110:HSO1, X110:HSO2 and X110:HSO3.
Section 3
1MRS756378 S
REF615 standard configurations
362
REF615
Application Manual
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