VAMP 259 - Page 81

Technical description
2 Protection functions
2.7 Directional overcurrent protection
Idir> (67)
VM259.EN007
VAMP 24h support phone +358 (0)20 753 3264
81
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 directional overcurrent stages
I
dir
>>>, I
dir
>>>> (67)
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
SgrpDI
-
Dix
Vix
LEDx
Vox
Digital signal to select the
active setting group
None
Digital input
Virtual input
LED indicator signal
Virtual output
Set
Force
Off
On
Force flag for status forcing
for test purposes. This is a
common flag for all stages
and output relays, too.
Automatically reset by a 5-
minute timeout.
Set
ILmax
A
The supervised value. Max.
of I
L1
, I
L2
and I
L3
I>>>>
I>>>>>
A
Pick-up value scaled to
primary value
I>>>>
I>>>>>
xIn
Pick-up setting
Set
t>>>
t>>>>
s
Definite operation time (for
definite time only)
Set
Mode
Dir
Undir
Directional (67)
Undirectional (50/51)
Set
Offset

Angle offset in degrees
Set


Measured power angle
U1
%Un
Measured positive sequence
voltage
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