VAMP 59 - Page 62

2.7 Directional earth fault
protection I0φ> (67N)
2 Protection functions
Technical description
62
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VM59.EN001
Parameter
Value
Unit
Description
Note
InUse
-
Res
Cap
Selected submode in mode
ResCap.
Mode is not ResCap
Submode = resistive
Submode = capacitive
Input
Io1
IoCalc
Io1Peak
X1-7,8,9. See chapter 8.
IL1 + IL2 + IL3
X1-7,8,9 peak mode (I
0
>
only)
Set
Intrmt
s
Intermittent time
Set
Dly20x
s
Delay at 20xIon
Dly4x
s
Delay at 4xIon
Dly2x
s
Delay at 2xIon
Dly1x
s
Delay at 1xIon
A, B, C, D,
E
User's constants for standard
equations. Type=Parameters.
See chapter 2.14.
Set
For details of setting ranges see chapter 9.2.
Set = An editable parameter (password needed)
C = Can be cleared to zero
F = Editable when force flag is on
Recorded values of the latest eight faults
There is detailed information available of the eight latest earth
faults: Time stamp, fault current, elapsed delay and setting
group.
Recorded values of the directional earth fault stages (8 latest
faults) I
0
>, I
0
>> (67N)
Parameter
Value
Unit
Description
yyyy-mm-dd
Time stamp of the recording, date
hh:mm:ss.ms
Time stamp, time of day
Flt
pu
Maximum earth fault current
EDly
%
Elapsed time of the operating time
setting. 100% = trip
Angle

Fault angle of I
0
. U
0
= 0
Uo
%
Max. U
0
voltage during the fault
SetGrp
1
2
Active setting group during fault