ABB RELION 615 Series Applications Manual page 80

Section 3
REG615 standard configurations
74
MNSPTOC1_OPERATE
MNSPTOC2_OPERATE
GUID-D4F3CED7-66B6-4925-8598-0CE20854D91E V2 EN
Figure 77: Negative sequence overcurrent protection function
One non-directional sensitive earth-fault stage EFHPTOC1 and three directional
earth-fault stages DEFxPDEF are offered for providing primary and backup
protection for generator earth-fault protection. Transient/intermittent earth-fault
protection INTRPTEF is used for transient based earth-fault protection.
BLOCK
ENA_MULT
RCA_CTL
BLOCK
ENA_MULT
RCA_CTL
BLOCK
ENA_MULT
RCA_CTL
GUID-B21DA613-47F3-45B8-89E9-70E8E0D076DA V2 EN
Figure 78: Directional earth-fault protection function
MNSPTOC1
BLOCK OPERATE
BLK_RESTART
MNSPTOC2
BLOCK OPERATE
BLK_RESTART
OR
B1
B2
DEFHPDEF1
OPERATE
START
DEFLPDEF1
OPERATE
START
DEFLPDEF2
OPERATE
START
1MRS758272 B
MNSPTOC1_OPERATE
START
MNSPTOC1_START
MNSPTOC2_OPERATE
START
MNSPTOC2_START
O
MNSPTOC_OPERATE
DEFHPDEF1_OPERATE
DEFHPDEF1_START
DEFLPDEF1_OPERATE
DEFLPDEF1_START
DEFLPDEF2_OPERATE
DEFLPDEF2_START
Application Manual
REG615