VAMP 59 - Page 52

2.5 Overcurrent protection I>
(50/51)
2 Protection functions
Technical description
52
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VM59.EN001
Parameter
Value
Unit
Description
Note
t>
s
Definite operation time (for
definite time only)
Set
k>
Inverse delay multiplier (for
inverse time only)
Set
Dly20x
s
Delay at 20xImode
Dly4x
s
Delay at 4xImode
Dly2x
s
Delay at 2xImode
Dly1x
s
Delay at 1xImode
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
Parameters of the overcurrent stages I>>, I>>> (50/51)
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
Fx
Digital signal to select the
active setting group
None
Digital input
Virtual input
LED indicator signal
Virtual output
Function key
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
IL1, IL2 and IL3
I>>, I>>>
A
Pick-up value scaled to
primary value
I>>, I>>>
xImode
Pick-up setting
Set
t>>, t>>>
s
Definite operation time
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