ABB relion REF615 Applications Manual page 240

Section 3
REF615 standard configurations
234
EFLPTOC1_OPERATE
EFHPTOC1_OPERATE
EFIPTOC1_OPERATE
EFLPTOC2_OPERATE
GUID-15DB4C4F-9B2C-483D-A066-6011F8535402 V1 EN
Figure 338: Earth-fault protection function
Phase discontinuity protection PDNSPTOC1 protects for interruptions in the normal
three-phase load supply. For example, in downed conductor situations the function is
blocked in case of detection of a failure in secondary circuit of current transformer.
CCSPVC1_FAIL
GUID-816DE51C-0F1F-4CD9-AA1B-8D88BB8490D7 V2 EN
Figure 339: Phase discontinuity 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.
EFIPTOC1
BLOCK OPERATE
ENA_MULT START
EFHPTOC1
BLOCK OPERATE
ENA_MULT START
EFLPTOC1
BLOCK OPERATE
ENA_MULT START
EFLPTOC2
BLOCK OPERATE
ENA_MULT START
OR6
B1 O
B2
B3
B4
B5
B6
PDNSPTOC1
BLOCK OPERATE
START
1MRS756378 S
EFIPTOC1_OPERATE
EFIPTOC1_START
EFHPTOC1_OPERATE
EFHPTOC1_START
EFLPTOC1_OPERATE
EFLPTOC1_START
EFLPTOC2_OPERATE
EFLPTOC2_START
EFxPTOC_OPERATE
PDNSPTOC1_OPERATE
PDNSPTOC1_START
REF615
Application Manual