ABB relion REF615 - Page 109

NSPTOC1
BLOCK
ENA_MULT
OPERATE
START
NSPTOC2
BLOCK
ENA_MULT
OPERATE
START
OR
B1
B2
O
NSPTOC1_OPERATE
NSPTOC1_OPERATE
NSPTOC2_OPERATE
NSPTOC2_OPERATE
NSPTOC1_START
NSPTOC2_START
NSPTOC_OPERATE
GUID-A0E1F246-E42C-4732-B0DE-BDC3F4A16CDC V1 EN
Figure 100: Negative sequence overcurrent protection function
Four stages are provided for non-directional earth-fault protection. One stage is
dedicated to sensitive earth-fault protection EFLPTOC2.
EFHPTOC1
BLOCK
ENA_MULT
OPERATE
START
EFLPTOC1
BLOCK
ENA_MULT
OPERATE
START
EFIPTOC1
BLOCK
ENA_MULT
OPERATE
START
OR6
B1
B2
B3
B4
B5
B6
O
EFLPTOC1_OPERATE
EFLPTOC1_OPERATE
EFHPTOC1_OPERATE
EFHPTOC1_OPERATE
EFIPTOC1_OPERATE
EFIPTOC1_OPERATE
EFLPTOC1_START
EFIPTOC1_START
EFHPTOC1_START
EFxPTOC_OPERATE
GUID-2540474C-37D6-4706-A740-2D0334DA26C2 V1 EN
Figure 101: Earth-fault protection functions
EFLPTOC2
BLOCK
ENA_MULT
OPERATE
START
EFLPTOC2_OPERATE
EFLPTOC2_START
GUID-D4A930C6-E4C8-41DA-BF3D-07E908AC1FCD V1 EN
Figure 102: Sensitive earth-fault protection function
1MRS756378 S Section 3
REF615 standard configurations
REF615 103
Application Manual