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3-52
Protection Functions
857-UM001A-EN-P – July 2009
Table 3.28 – Parameters of the overvoltage stages U>, U>>, U>>> (59)
Parameter
Value
Status
-
Blocked
Start
Trip
SCntr
TCntr
SetGrp
1 or 2
SGrpDI
-
DIx
VIx
LEDx
VOx
Force
Off
On
Umax
U>, U>>,
U>>>
U>, U>>,
U>>>
t>, t>>, t>>>
RlsDly
Hyster
3 (default)
For details of setting ranges see "Protection Stages" in Chapter 10.
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
Detailed information is available on the eight latest faults: Time
stamp, fault voltage, elapsed delay and setting group.
Recorded values of the overvoltage stages (8 latest faults)
U>, U>>, U>>> (59)
Parameter
Value
yyyy-mm-dd
hh:mm:ss.ms
Flt
EDly
SetGrp
1
2
Unit
Description
Current status of the stage
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.
V
The supervised value. Max. of U12,
U23 and U31
V
Pick-up value scaled to primary value
%Un
Pick-up setting relative to U
s
Definite operation time
s
Release delay (U> stage only)
%
Dead band size i.e. hysteresis
Unit
Description
Time stamp of the recording, date
Time stamp, time of day
%Un
Maximum fault voltage
%
Elapsed time of the operating time setting.
100% = trip
Active setting group during fault
Note
F
F
C
C
Set
Set
Set
Set
N
Set
Set
Set
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