Overcurrent Protection; Functional Diagrams For Protection - ABB relion REF615 Applications Manual

1MRS756378 S
3.6.3.1
REF615
Application Manual
The IED offers six different settings groups which can be set based on individual
needs. Each group can be activated or deactivated using the setting group settings
available in the IED.
Depending on the communication protocol the required function block needs to be
instantiated in the configuration.

Functional diagrams for protection

The functional diagrams describe the IED's protection functionality in detail and
according to the factory set default connections.
Four non-directional overcurrent stages are offered for overcurrent and short-circuit
protection. Three-phase non-directional overcurrent protection, instantaneous stage,
PHIPTOC1 can be blocked by energizing the binary input X120:BI1.
X120_BI1_EXT_OC_BLOCKING
PHIPTOC1_OPERATE
PHHPTOC1_OPERATE
PHHPTOC2_OPERATE
PHLPTOC1_OPERATE
GUID-BDBE20E4-EE17-4FB4-B525-7421865C388F V1 EN
Figure 128: 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.
REF615 standard configurations
PHIPTOC1
BLOCK OPERATE
ENA_MULT START
PHHPTOC1
BLOCK OPERATE
ENA_MULT START
PHHPTOC2
BLOCK OPERATE
ENA_MULT START
PHLPTOC1
BLOCK OPERATE
ENA_MULT START
OR6
B1 O
B2
B3
B4
B5
B6
Section 3
PHIPTOC1_OPERATE
PHIPTOC1_START
PHHPTOC1_OPERATE
PHHPTOC1_START
PHHPTOC2_OPERATE
PHHPTOC2_START
PHLPTOC1_OPERATE
PHLPTOC1_START
PHxPTOC_OPERATE
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