Name Values (Range) Unit Step Default Description
DirModeSel1 Disabled
Non-directional
Forward
Reverse
- - Non-directional Directional mode of step 1 (off, non-
directional, forward, reverse)
Characterist1 ANSI Ext. inv.
ANSI Very inv.
ANSI Norm. inv.
ANSI Mod. 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 Time delay curve type for step 1
Pickup1 1 - 2500 %IB 1 100 Residual current pickup for step 1 in % of IBase
t1 0.000 - 60.000 s 0.001 0.000 Independent (definite) time delay of step 1
TD1 0.05 - 999.00 - 0.01 0.05 Time multiplier for the dependent time delay
for step 1
IMin1 1 - 10000 %IB 1 100 Minimum operate current for step1in% of IBase
t1Min 0.000 - 60.000 s 0.001 0.000 Minimum operate time for inverse curves for
step 1
HarmRestrain1 Disabled
Enabled
- - Enabled Enable block of step 1 from harmonic restrain
DirModeSel2 Disabled
Non-directional
Forward
Reverse
- - Non-directional Directional mode of step 2 (off, non-
directional, forward, reverse)
Pickup2 1 - 2500 %IB 1 50 Residual current pickup for step 2 in % of IBase
t2 0.000 - 60.000 s 0.001 0.400 Independent (definite) time delay of step 2
IMin2 1 - 10000 %IB 1 50 Minimum operate current for step 2 in % of
IBase
HarmRestrain2 Disabled
Enabled
- - Enabled Enable block of step 2 from harmonic restrain
DirModeSel3 Disabled
Non-directional
Forward
Reverse
- - Non-directional Directional mode of step 3 (off, non-
directional, forward, reverse)
Pickup3 1 - 2500 %IB 1 33 Residual current pickup for step 3 in % of IBase
t3 0.000 - 60.000 s 0.001 0.800 Independent (definite) time delay of step 3
IMin3 1 - 10000 %IB 1 33 Minimum operate current for step 3 in % of
IBase
Table continues on next page
Section 7 1MRK 505 277-UUS C
Current protection
86
Technical Manual
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