Name Values (Range) Unit Step Default Description
2ndHarmStab 5 - 100 % 1 20 Operate level of 2nd harmonic curr in %
of fundamental curr
BlkParTransf Off
On
- - Off Enable blocking at energizing of parallel
transformers
UseStartValue IN1>
IN2>
IN3>
IN4>
-
- IN4> Current level blk at parallel transf (step1,
2, 3 or 4)
SOTF Off
SOTF
UnderTime
SOTF&UnderTime
-
- Off SOTF operation mode (Off/SOTF/
Undertime/SOTF&Undertime)
ActivationSOTF Open
Closed
CloseCommand
-
- Open Select signal to activate SOTF: CB-
Open/ -Closed/ -Close cmd
StepForSOTF Step 2
Step 3
- - Step 2 Select start from step 2 or 3 to start
SOTF
HarmBlkSOTF Off
On
- - Off Enable harmonic restrain function in
SOTF
tSOTF 0.000 - 60.000 s 0.001 0.200 Time delay for SOTF
t4U 0.000 - 60.000 s 0.001 1.000 Switch-onto-fault active time
ActUnderTime CB position
CB command
- - CB position Select signal to activate under time (CB
Pos / CB Command)
tUnderTime 0.000 - 60.000 s 0.001 0.300 Time delay for under time
DirMode1 Off
Non-directional
Forward
Reverse
-
- Non-directional Directional mode of step 1 (Off, Non-dir,
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
Programmable
RI type
RD type
- - ANSI Def. Time Time delay characteristic for step 1
IN1> 1 - 2500 %IB 1 100 Residual current operate level for step 1
in % of IBase
t1 0.000 - 60.000 s 0.001 0.000 Def time delay or add time delay for
inverse char of step 1
k1 0.05 - 999.00 - 0.01 0.05 Time multiplier for the step 1 selected
time characteristic
Table continues on next page
1MRK 505 384-UEN A Section 6
Current protection
Breaker protection REQ650 2.2 IEC 107
Technical manual
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