ABB Relion 670 Series Technical Reference Manual page 421

Line differential protection ansi
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1MRK505222-UUS C
7.4.5
Table 202:
EF4PTOC (51N67N) Group settings (basic)
Name
Values (Range)
Operation
Disabled
Enabled
IBase
1 - 99999
VBase
0.05 - 2000.00
AngleRCA
-180 - 180
polMethod
Voltage
Current
Dual
VPolMin
1 - 100
IPolMin
2 - 100
RNPol
0.50 - 1000.00
XNPol
0.50 - 3000.00
INDirPU
1 - 100
2ndHarmStab
5 - 100
BlkParTransf
Disabled
Enabled
Use_PUValue
ST1
ST2
ST3
ST4
SOTF
Disabled
SOTF
UnderTime
SOTF&UnderTime
SOTFSel
Open
Closed
CloseCommand
StepForSOTF
Step 2
Step 3
Table continues on next page
Technical reference manual
Name
Type
PUFW
BOOLEAN
PUREV
BOOLEAN
2NDHARMD
BOOLEAN
Setting parameters
Unit
Step
-
-
A
1
kV
0.05
Deg
1
-
-
%VB
1
%IB
1
ohm
0.01
ohm
0.01
%IB
1
%
1
-
-
-
-
-
-
-
-
-
-
Description
Forward directional pickup signal
Reverse directional pickup signal
2nd harmonic block signal
Default
Description
Disabled
Disable/Enable Operation
3000
Base value for current settings
400
Base value for voltage settings
65
Relay characteristic angle (RCA)
Voltage
Type of polarization
1
Minimum voltage level for polarization in % of
VBase
5
Minimum current level for polarization in % of
IBase
5.00
Real part of source Z to be used for current
polarisation
40.00
Imaginary part of source Z to be used for
current polarisation
10
Residual current level for directional element
in % of IBase
20
Second harmonic restrain operation in % of
IN magnitude
Disabled
Enable blocking at parallel transformers
ST4
Current pickup blocking at parallel transf
(step1, 2, 3 or 4)
Disabled
SOTF operation mode (Off/SOTF/Undertime/
SOTF&Undertime)
Open
Select signal that shall activate SOTF
Step 2
Selection of step used for SOTF
Section 7
Current protection
415

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