ABB relion REF615 Applications Manual page 212

Section 3
REF615 standard configurations
206
EFPADM1_OPERATE
EFPADM2_OPERATE
EFPADM3_OPERATE
GUID-80B32305-038A-4261-AF02-E3E0884E5070 V1 EN
Figure 286: Admittance-based earth-fault protection function
Non-directional (cross-country) earth-fault protection, using calculated Io,
EFHPTOC1 protects against double earth-fault situations in isolated or compensated
networks. This protection function uses the calculated residual current originating
from the phase currents. Function is blocked in case of detection of a failure in
secondary circuit of sensor.
CCSPVC1_FAIL
GUID-AD3B6BA3-857E-44BF-9739-2F1D1AADA63B V2 EN
Figure 287: 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 sensor.
CCSPVC1_FAIL
GUID-A735E86D-1AB7-44FE-B59D-A83FF8EC8362 V2 EN
Figure 288: Phase discontinuity protection function
Three-phase thermal protection for feeders, cables and distribution transformers
T1PTTR1 detects overloads under varying load conditions. The BLK_CLOSE output
of the function is used to block the closing operation of circuit breaker.
EFPADM1
BLOCK OPERATE
RELEASE START
EFPADM2
BLOCK OPERATE
RELEASE START
EFPADM3
BLOCK OPERATE
RELEASE START
OR6
B1 O
B2
B3
B4
B5
B6
EFHPTOC1
BLOCK OPERATE
ENA_MULT START
PDNSPTOC1
BLOCK OPERATE
START
1MRS756378 S
EFPADM1_OPERATE
EFPADM1_START
EFPADM2_OPERATE
EFPADM2_START
EFPADM3_OPERATE
EFPADM3_START
EFPADM_OPERATE
EFHPTOC1_OPERATE
EFHPTOC1_START
PDNSPTOC1_OPERATE
PDNSPTOC1_START
REF615
Application Manual