Recorded Values Of The Latest Eight Faults - Allen-Bradley Rockwell Automation 857 User Manual

Table 3.16 – Parameters of the directional earth fault stages I
(cont.)
Parameter Value
Input Io1
Io2
IoCalc
Io1Peak
Io2Peak
Intrmt
Dly20x
Dly4x
Dly2x
Dly1x
A, B, C, D,
E
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

There is detailed information available of the eight latest earth
faults: Time stamp, fault current, elapsed delay and setting
group.
Table 3.17 – Recorded values of the directional earth fault stages (8 latest faults)
I >, I >> (67N)
0 0
Parameter Value
yyyy-mm-dd
hh:mm:ss.ms
Flt
EDly
Angle °
Uo
SetGrp 1
2
Protection Functions
Unit Description
X6-7,8,9. See chapter Error!
Reference source not found..
X6-10,11,12
IL1 + IL2 + IL3
X6-7,8,9 peak mode (I
X6-10,11,12 peak mode (I
s Intermittent time
s Delay at 20xIoset
s Delay at 4xIoset
s Delay at 2xIoset
s Delay at 1xIoset
User's constants for standard
equations. Type=Parameters.
See "Inverse Time Operation".
Unit Description
Time stamp of the recording, date
Time stamp, time of day
pu Maximum earth fault current
% Elapsed time of the operating time setting.
100% = trip
Fault angle of I . –U
0
% Max. U voltage during the fault
0
Active setting group during fault
3-29
>, I >> (67N)
0 0
Note
Set
ϕ> only)
0
ϕ> only)
0
Set
Set
= 0°
0
857-UM001A-EN-P – July 2009