ABB Relion 615 series - Page 180

EFLPTOC2
O:27|T:5|I:2
BLOCK
ENA_MULT
TRIP
PICKUP
EFHPTOC3
O:21|T:5|I:3
BLOCK
ENA_MULT
TRIP
PICKUP
EFHPTOC4
O:23|T:5|I:4
BLOCK
ENA_MULT
TRIP
PICKUP
EFIPTOC2
O:30|T:2.5|I:2
BLOCK
ENA_MULT
TRIP
PICKUP
OR
O:13|T:2.5|I:20
B1
B2
O
CLD_62_1_TRIP
EFLPTOC2_51N-1_PICKUP
EFHPTOC3_50N-1_PICKUP
EFHPTOC4_50N-2_PICKUP
EFIPTOC2_50N-3_PICKUP
EFLPTOC2_51N-1_TRIP
EFHPTOC3_50N-1_TRIP
EFHPTOC4_50N-2_TRIP
EFIPTOC2_50N-3_TRIP
CCRDIF1_CCM_FAIL
CCRDIF1_CCM_FAIL
CCRDIF1_CCM_FAIL
CCRDIF1_CCM_FAIL
GUID-B825E105-AA47-441D-B674-6F8687FCBCA2 V1 EN
Figure 227: Non-directional calculated neutral overcurrent protection
Four stages are provided to non-directional ground-fault protection. Additionally
depending on order option, one stage is offered as a sensitive ground-fault protection. The
ground-fault protection uses measured residual current component.
The operation of EFLPTOC1_51G, EFHPTOC2_51G-2 and EFHPTOC3_51G-3 are by
default, not blocked by an external blocking input, but this can be done through a binary
input.
Section 3 1MAC109016-MB C
REF615 standard configurations
174 REF615 ANSI
Application Manual