ABB relion REF615 - Page 83

PHIPTOC1
BLOCK
ENA_MULT
OPERATE
START
PHLPTOC1
BLOCK
ENA_MULT
OPERATE
START
PHHPTOC1
BLOCK
ENA_MULT
OPERATE
START
PHHPTOC2
BLOCK
ENA_MULT
OPERATE
START
OR6
B1
B2
B3
B4
B5
B6
O
PHIPTOC1_OPERATE
PHIPTOC1_OPERATE
PHLPTOC1_OPERATE
PHLPTOC1_OPERATE
PHHPTOC1_OPERATE
PHHPTOC1_OPERATE
PHHPTOC2_OPERATE
PHHPTOC2_OPERATE
PHLPTOC1_START
PHHPTOC1_START
PHHPTOC2_START
PHIPTOC1_START
X120_BI1_EXT_OC_BLOCKING
PHxPTOC_OPERATE
GUID-421CC220-9CDA-4862-A705-52A7C7E39DF0 V1 EN
Figure 53: Overcurrent protection functions
The upstream blocking from the start of the second high stage of three-phase non-
directional overcurrent protection PHHPTOC2 is connected to the binary output
X110:SO1. This output can be used for sending a blocking signal to the relevant
overcurrent protection stage of the IED at the infeeding bay.
OR6
B1
B2
B3
B4
B5
B6
O
UPSTEAM_OC_BLOCKINGPHHPTOC2_START
GUID-2A6B241E-751B-4FA1-8D4C-93B5470ADE90 V1 EN
Figure 54: Upstream blocking logic
The output BLK2H of three-phase inrush detector INRPHAR1 enables either blocking
the function or multiplying the active settings for any of the available overcurrent or
earth-fault function blocks.
1MRS756378 S Section 3
REF615 standard configurations
REF615 77
Application Manual