EFPADM, wattmetric-based earth-fault protection WPWDE or harmonics-based
earth-fault protection HAEFPTOC. A dedicated protection stage INTRPTEF is used
either for transient based earth-fault protection or for cable intermittent earth-fault
protection in compensated networks.
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-0C05F72B-4EF4-4926-89AA-23AC67B1272C V1 EN
Figure 566: Earth-fault protection functions
EFLPTOC2
BLOCK
ENA_MULT
OPERATE
START
EFLPTOC2_OPERATE
EFLPTOC2_START
GUID-65E9D918-294A-4936-9F02-65AD242EA181 V1 EN
Figure 567: Sensitive earth-fault protection function
Phase discontinuity protection PDNSPTOC1 protects from interruptions in the
normal three-phase load supply, for example, in downed conductor situations.
PDNSPTOC1
BLOCK OPERATE
START
PDNSPTOC1_OPERATE
PDNSPTOC1_START
GUID-02B0B781-07E0-4ED2-B30B-E88EB378D6C6 V1 EN
Figure 568: Phase discontinuity protection
Three-phase thermal protection for feeders, cables and distribution transformers
T1PTTR1 detects overloads under varying load conditions. The BLK_CLOSE output
of the function can be used to block the closing operation of circuit breaker.
1MRS756378 S Section 3
REF615 standard configurations
REF615 361
Application Manual
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