VAMP 259 - Page 89

Technical description
2 Protection functions
2.10 Directional earth fault protection
I0φ> (67N)
VM259.EN007
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89
Parameters of the directional earth fault stages
I
0
>, I
0
>> (67N)
Parameter
Value
Unit
Description
Note
Status
-
Blocked
Start
Trip
Current status of the stage
F
F
TripTime
s
Estimated time to trip
SCntr
Cumulative start counter
Clr
TCntr
Cumulative trip counter
Clr
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
Io
IoCalc
IoPeak
pu
The supervised value
according the parameter
"Input" below.
(I
0
> only)
(I
0
> only)
IoRes
pu
Resistive part of I
0
(only when
"InUse"=Res)
IoCap
pu
Capacitive part of I
0
(only
when "InUse"=Cap)
Io>
A
Pick-up value scaled to
primary value
Io>
pu
Pick-up setting relative to the
parameter "Input" and the
corresponding CT value
Set
Uo>
%
Pick-up setting for U
0
Set
Uo
%
Measured U
0
Curve
DT
IEC
IEEE
IEEE2
RI
PrgN
Delay curve family:
Definite time
Inverse time. See chapter 2.24.
Set