GE MiCOM P40 Agile Technical Manual page 142

P44x/EN ST/Hb6
(ST) 4-68
Menu text
GROUP 1 – AUTORECLOSE
1P Trip Mode
Number of shots, single pole trip mode (displayed if "A/R single pole" is enabled ('CB
Control' column)).
This setting is enabled if the first fault is a single phase fault. The first shot is a single mode
high speed autoreclose shot and, if the relay has been set to allow more than one reclose,
then the second, third and fourth shots are converted to three-pole time-delayed
autoreclose trips.
3P Trip Mode
Number of shots, three-pole trip mode (displayed if "A/R Three pole" is enabled ('CB
Control' column)).
This cell sets three-pole autoreclose shots. Up to four three-pole autoreclose shots are
settable (1 high speed and three time-delayed autoreclose shots).
1P - Dead Time 1
3P - Dead Time 1
Single-/ Three-pole dead time is displayed if "A/R single / Three pole" is enabled ('CB
Control' column).
This setting is enabled if the first fault is a multi phase fault. Dead Times 1 (1P or 3P) set the
dead time for the first high speed shot of the single pole or three-pole reclosure.
Dead Time 2
Dead Time 3
Dead Time 4
Dead Times for second, 3
adjustable. The CB close signal is given at the end of this time-delay.
Reclaim Time
Set the reclaim time. The reclaim time starts when the CB is closed. The reclaim time
should be set according to the fault incidence, the CB spring charging time, the switchgear
maintenance and the tZ2 zone delay.
Reclose Time Delay
Set the time-delay before CB reclosure. The Reclose time-delay maintains the linked
reclose contact closed for a time sufficient to ensure reliable CB mechanism operation
Discrimination Time
The discrimination time-delay is used to differentiate between an evolving fault from a
second fault in the power system and a long circuit breaker operation.
A/R Inhibit Wind
(CB healthy application)
The "A/R Inhibit Wind" timer setting can be used to prevent autoreclose being initiated when
the CB is manually closed onto a fault. Autoreclose is disabled for the AR Inhibit Wind
following manual CB Closure.
Default setting
1 1 – Single
1/3 – Single/Three
1/3/3 – Single/Three/Three
1/3/3/3 – Single/Three/Three/Three
1 3 – Three
3/3 – Three/Three
3/3/3 – Three/Three/Three
3/3/3/3 – Three/Three/Three/Three
1s 0.1s
1s 0.1s
60s 1s
180s 1s
180s 1s
rd th
and 4 shot (when set). The dead times are independently
180s 1s
0.1s 0.1s
5s 0.1s
5s 1s
MiCOM P40 Agile P442, P444
Setting range
Min Max
5s
60s
3600s
3600s
3600s
600s
10s
5s
3600s
Setting
Step size
0.01s
0.01s
1s
1s
1s
1s
0.1s
0.01s
1s