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Table 3.5 – Parameters of the Directional Overcurrent Stages I
Parameter
Value
Status
-
Blocked
Start
Trip
Trip Time
SCntr
TCntr
SetGrp
1 or 2
SGrpDI
-
DIx
VIx
LEDx
VOx
Force
Off
On
ILmax
Iϕ>, Iϕ>>
I >, I >>
xImode
Curve
DT
IEC
IEEE
IEEE2
RI
PrgN
Type
DT
NI
VI
EI
LTI
Parameter
s
t>
k>
Dly20x
Dly4x
Dly2x
Dly1x
Mode
Dir
Undir
Offset
Protection Functions
Unit
Description
Current status of the stage
S
Estimated time to trip
Cumulative start counter
Cumulative trip counter
Active setting group
Digital signal to select the active setting
group
None
Digital input
Virtual input
LED indicator signal
Virtual output
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.
A
The supervised value. Max. of IL1, IL2 and
IL3
A
Pick-up value scaled to primary value
Pick-up setting
Delay curve family:
Definite time
Inverse time. See "Inverse Time
Operation".
Delay type.
Definite time
Inverse time. See "Inverse Time
Operation".
s
Definite operation time (for definite time
only)
Inverse delay multiplier (for inverse time only)
s
Delay at 20xIset
s
Delay at 4xIset
s
Delay at 2xIset
s
Delay at 1xIset
Directional mode (67)
Undirectional (50/51)
°
Angle offset in degrees
3-13
>, I
>> (67)
dir
dir
Note
F
F
Clr
Clr
Set
Set
Set
Set
Set
Set
Set
Set
Set
Set
857-UM001A-EN-P – July 2009
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