ABB relion REF615 Applications Manual page 178

Section 3
REF615 standard configurations
172
DPHHPDOC1_OPERATE
DPHLPDOC1_OPERATE
DPHLPDOC2_OPERATE
GUID-C07091F0-AAEA-403B-A72A-11912CD886C0 V1 EN
Figure 223: Directional overcurrent protection function
The upstream blocking from the start of the second low stage of three-phase
directional overcurrent protection DPHLPDOC2 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.
DPHLPDOC2_START
GUID-5EFA1CBD-DC1F-46F0-ABF2-D42054BB7BD7 V1 EN
Figure 224: 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.
BLOCK
GUID-14BD5163-8EB0-4B61-8C4A-0DF50393EBA9 V1 EN
Figure 225: Inrush detector function
Two negative-sequence overcurrent protection stages NSPTOC1 and NSPTOC2 are
provided for phase unbalance protection. These functions are used to protect the
DPHHPDOC1
BLOCK OPERATE
ENA_MULT START
NON_DIR
DPHLPDOC1
BLOCK OPERATE
ENA_MULT START
NON_DIR
DPHLPDOC2
BLOCK OPERATE
ENA_MULT START
NON_DIR
OR6
B1
B2
B3
B4
B5
B6
OR6
B1 O
B2
B3
B4
B5
B6
INRPHAR1
BLK2H
1MRS756378 S
DPHHPDOC1_OPERATE
DPHHPDOC1_START
DPHLPDOC1_OPERATE
DPHLPDOC1_START
DPHLPDOC2_OPERATE
DPHLPDOC2_START
O
DPHxPDOC_OPERATE
UPSTEAM_OC_BLOCKING
INRPHAR1_BLK2H
Application Manual
REF615