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not relevant from the protection perspective, because during an intermittent fault many ignition pulses occur
and the counter threshold is certainly reached.
At address 3404 Monitoring time you set the monitoring time after detection of the direction pulse in the
direction parameterized at 3402. If the time has expired before the number set at 3403 No. of pulses has
been reached, the associated counter is reset. This time is a criterion for the disappearing of the intermittent
fault.
At address 3406 Pickup you can set the criterion for the pickup of the function. For with Vgnd/3V0> pickup
takes place as soon as the threshold Vgnd> / 3V0> has been exceeded, regardless of whether a real inter-
mittent ground fault is present or not. For with oper. dir., recording starts when a direction pulse in the
direction parameterized at 3402 has been detected.
2.13.3
Settings
Addr.
Parameter
3401
Dir. Interm. EF
3402
Direction
3403
No. of pulses
3404
Monitoring time
3405
Vgnd> / 3V0>
3406
Pickup
2.13.4
Information List
No.
Information
6951
>dIEF block
6961
dIEF OFF
6962
dIEF blocked
6963
dIEF active
6972
dIEF pick up
6973
dIEF TRIP
6974
No.forward=
6975
No.reverse=
6976
No.undef.=
6979
dIEF ALARM
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
Setting Options
OFF
ON
ON with GF log
Alarm Only
Forward
Reverse
2 .. 50
0.04 .. 10.00 sec
2.0 .. 100.0 V
with Vgnd/3V0>
with oper. dir.
Type of In-
formation
SP
>Block directional interm. E/F prot.
OUT
Dir. Interm. E/F prot. is switched off
OUT
Dir. Interm. E/F prot. is blocked
OUT
Dir. Interm. E/F prot. is active
OUT
dIEF: pick up
OUT
dIEF: Trip
VI
dIEF: No. of detected forward pulses =
VI
dIEF: No. of detected reverse pulses =
VI
dIEF: No. of detected undefined pulses =
OUT
dIEF: Alarm
2.13 Dir. Intermittent earth fault protection
Default Setting
OFF
Dir. Intermittent earth fault protec-
tion
Forward
Direction to be protected
5
Pulse no. for detecting the interm.
E/F
2.00 sec
Monitoring time after pickup de-
tected
20.0 V
Vgnd> measured / 3V0> calculat-
ed
with Vgnd/3V0>
Pickup of the function
Comments
Functions
Comments
217
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