Table 172: EF4PTOC Input signals
Name Type Default Description
I3P GROUP
SIGNAL
- Group connection for operate current
U3P GROUP
SIGNAL
- Group connection for polarizing voltage
I3PPOL GROUP
SIGNAL
- Group connection for polarizing current
I3PDIR GROUP
SIGNAL
- Group connection for directional current
BLOCK BOOLEAN 0 General block
BLKTR BOOLEAN 0 Block of trip
BLKST1 BOOLEAN 0 Block of step 1 (Start and trip)
BLKST2 BOOLEAN 0 Block of step 2 (Start and trip)
BLKST3 BOOLEAN 0 Block of step 3 (Start and trip)
BLKST4 BOOLEAN 0 Block of step 4 (Start and trip)
ENMULT1 BOOLEAN 0 When activated, the current multiplier is in use for
step1
ENMULT2 BOOLEAN 0 When activated, the current multiplier is in use for
step2
ENMULT3 BOOLEAN 0 When activated, the current multiplier is in use for
step3
ENMULT4 BOOLEAN 0 When activated, the current multiplier is in use for
step4
CBPOS BOOLEAN 0 Breaker position
CLOSECB BOOLEAN 0 Breaker close command
OPENCB BOOLEAN 0 Breaker open command
Table 173: EF4PTOC Output signals
Name
Type Description
TRIP BOOLEAN General trip signal
TRIN1 BOOLEAN Trip signal from step 1
TRIN2 BOOLEAN Trip signal from step 2
TRIN3 BOOLEAN Trip signal from step 3
TRIN4 BOOLEAN Trip signal from step 4
TRSOTF BOOLEAN Trip signal from earth fault switch onto fault function
START BOOLEAN General start signal
STIN1 BOOLEAN Start signal step 1
STIN2 BOOLEAN Start signal step 2
STIN3 BOOLEAN Start signal step 3
STIN4 BOOLEAN Start signal step 4
STSOTF BOOLEAN Start signal from earth fault switch onto fault
function
Table continues on next page
1MRK502052-UEN B Section 8
Current protection
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Technical manual