Name
Values (Range)
Unit
Step
Default
Description
DirMode3
Off
Non-directional
Forward
Reverse
-
-
Non-directional
Directional mode of step 3 off / non-
directional / forward / reverse
I3>
5 - 2500
%IB
1
250
Phase current operate level for step3 in %
of IBase
t3
0.000 - 60.000
s
0.001
0.800
Definite time delay of step 3
DirMode4
Off
Non-directional
Forward
Reverse
-
-
Non-directional
Directional mode of step 4 off / non-
directional / forward / reverse
Characterist4
ANSI Ext. inv.
ANSI Very inv.
ANSI Norm. inv.
ANSI Def. Time
L.T.E. inv.
L.T.V. inv.
L.T. inv.
IEC Norm. inv.
IEC Very inv.
IEC inv.
IEC Ext. inv.
IEC S.T. inv.
IEC L.T. inv.
IEC Def. Time
Reserved
RI type
RD type
-
-
ANSI Def. Time
Selection of time delay curve type for step
4
I4>
5 - 2500
%IB
1
175
Phase current operate level for step 4 in %
of IBase
t4
0.000 - 60.000
s
0.001
2.000
Definite time delay of step 4
k4
0.05 - 999.00
-
0.01
0.05
Time multiplier for the inverse time delay
for step 4
IMin4
5 - 10000
%IB
1
100
Minimum operate current for step4 in % of
IBase
t4Min
0.000 - 60.000
s
0.001
0.000
Minimum operate time for inverse curves
for step 4
Table 75:
OC4PTOC Group settings (advanced)
Name
Values (Range)
Unit
Step
Default
Description
HarmRestrain
Off
On
-
-
Off
Enable block from harmonic restrain
2ndHarmStab
5 - 100
%IFund
1
20
Operate level of 2nd harm restrain op in %
of Fundamental
HarmRestrain1
Off
On
-
-
Off
Enable block of step 1 from harmonic
restrain
HarmRestrain2
Off
On
-
-
Off
Enable block of step 2 from harmonic
restrain
HarmRestrain3
Off
On
-
-
Off
Enable block of step3 from harmonic
restrain
HarmRestrain4
Off
On
-
-
Off
Enable block of step 4 from harmonic
restrain
Section 8
1MRK 504 135-UEN A
Current protection
146
Technical manual
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