VAMP 59 - Page 70

2.9 Zero sequence voltage
protection U0> (59N)
2 Protection functions
Technical description
70
VAMP 24h support phone +358 (0)20 753 3264
VM59.EN001
Parameters of the residual overvoltage stages
U
0
>, U
0
>> (59N)
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
Uo
%
The supervised value relative
to Un/3
Uo>, Uo>>
%
Pick-up value relative to
Un/3
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
Recorded values of the latest eight faults
There are detailed information available of the eight latest
faults: Time stamp, fault voltage, elapsed delay and setting
group.
Recorded values of the residual overvoltage stages
U
0
>, U
0
>> (59N)
Parameter
Value
Unit
Description
yyyy-mm-dd
Time stamp of the recording, date
hh:mm:ss.ms
Time stamp, time of day
Flt
%
Fault voltage relative to Un/3
EDly
%
Elapsed time of the operating time
setting. 100% = trip
SetGrp
1
2
Active setting group during fault