
en 06000376_ansi. vsd
Direction
Element
4 step over current
element
One element for each
step
Harmonic
Restraint
Mode
Selection
ground FaultDirection
harmRestrBlock
enableDir
enableStep1-4
DirectionalMode1-4
TRIP
Element
enableDir
angleValid
Directional Check
operatingCurrent
SwitchOnToFault
pickup step 2 , 3 and 4
signal to
communication
scheme
TRIP
3V0
3I0
Blocking at parallel
transformers
or
CB
pos
or cmd
Element
3I0
DirModeSel
DirModeSel
INPol
ANSI06000376 V1 EN
Figure 211:
Functional overview of EF4PTOC (51N/67N)
7.4.3
Function block
ANSI06000424-2-en.vsd
EF4PTOC (51N67N)
I3P*
V3P*
I3PPOL*
BLOCK
BLKTR
BLK1
BLK2
BLK3
BLK4
MULTPU1
MULTPU2
MULTPU3
MULTPU4
52A
CLOSECMD
OPENCMD
TRIP
TRST1
TRST2
TRST3
TRST4
TRSOTF
PICKUP
PUST1
PUST2
PUST3
PUST4
PUSOTF
PUFW
PUREV
2NDHARMD
ANSI06000424 V2 EN
Figure 212:
EF4PTOC (51N/67N) function block
1MRK505222-UUS C
Section 7
Current protection
413
Technical reference manual
Summary of Contents for Relion 670 series
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