2.10 Directional earth fault protection
I0φ> (67N)
2 Protection functions
Technical description
90
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VM259.EN007
Parameter Value
Unit Description
Note
Type
DT
NI
VI
EI
LTI
Parameters
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
Mode
ResCap
Sector
Undir
High impedance earthed nets
Low impedance earthed nets
Undirectional mode
Set
Offset
Angle offset (MTA) for RecCap
and Sector modes
Set
Sector
Default =
88
±°
Half sector size of the trip area
on both sides of the offset
angle
Set
ChCtrl
Res
Cap
DI1…32
VI1..4
Res/Cap control in mode
ResCap
Fixed to Resistive
characteristic
Fixed to Capacitive
characteristic
Controlled by digital input
Controlled by virtual input
Set
InUse
-
Res
Cap
Selected submode in mode
ResCap.
Mode is not ResCap
Submode = resistive
Submode = capacitive
Input
I
0
I
0Calc
I
0Peak
X1:7-8. See chapter 8.
I
L1
+ I
L2
+ I
L3
X1:7-8 peak mode (I
0
> only)
Set
Intrmt
s
Intermittent time
Set
Dly20x
s
Delay at 20xIoset
Dly4x
s
Delay at 4xIoset
Dly2x
s
Delay at 2xIoset
Dly1x
s
Delay at 1xIoset
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