VAMP 259 - Page 75

Technical description
2 Protection functions
2.6 Overcurrent stage I> (50/51)
VM259.EN007
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Parameter
Value
Unit
Description
Note
ILmax
A
The supervised value. Max. of
I
L1
, I
L2
and I
L3
I>
A
Pick-up value scaled to
primary value
I>
xIn
Pick-up setting
Set
Curve
DT
IEC
IEEE
IEEE2
RI
PrgN
Delay curve family:
Definite time
Inverse time. See chapter 2.24.
Pre 1996
Set
Type
DT
NI
VI
EI
LTI
Paramet
ers
Delay type.
Definite time
Inverse time. See chapter 2.24.
Set
t>
s
Definite operation time (for
definite time only)
Set
k>
Inverse delay multiplier (for
inverse time only)
Set
Dly20x
s
Delay at 20xIset
Dly4x
s
Delay at 4xIset
Dly2x
s
Delay at 2xIset
Dly1x
s
Delay at 1xIset
A, B, C, D,
E
User's constants for standard
equations. Type=Parameters.
See chapter 2.24.
Set
For details of setting ranges see chapter 9.3.
Set = An editable parameter (password needed)
C = Can be cleared to zero
F = Editable when force flag is on
Parameters of the overcurrent stages I>>, I>>> (50/51)
Parameter
Value
Unit
Description
Note
Status
-
Blocked
Start
Trip
Current status of the stage
F
F
SCntr
Cumulative start counter
C
TCntr
Cumulative trip counter
C
SetGrp
1 or 2
Active setting group
Set