Settings P54x/EN ST/La4
MiCOM P543, P544, P545, P546
(ST) 4-63
ST
Setting range
Menu text Default setting
Min. Max.
Step size
ZPT AR Block AR
No action, Block AR or
Initiate AR
Similar application to ZPT AR. Selection for Zone 3 trips.
(Only in models with dis e option) tanc
Z4T AR Block AR
No action, Block AR or
Initiate AR
Similar application to Z4 . Selection for Zo s. T AR ne 4 trip
(Only in models with distance option)
DEF Aided AR Block AR Block AR or Initiate AR
Setting that determines ided Directio AR impact of a nal Earth Fault protection (DEF) on
operation.
(Only in models with distance option)
Dir Aided AR Block AR Block AR or Initiate AR
Setting that determines ided Directio n AR impact of a nal Comparison protection (DEF) o
operation.
(Only in models with distance option)
TOR AR Block AR Block AR or Initiate AR
Setting that determines rip On Recloimpact of T se (TOR) on AR operation.
(Only in models with distance option)
I>1 AR No Action
No action, Block AR or
Initiate AR
Setting that determines impact of the first stage overcurrent protection on AR operation.
>2 AR to I>4 AR
Cells as for >1 AR
Above
IN>1 AR No Action No action, Block AR or Initiate AR
Setting that determines impact of the f
operation.
irst stage earth fault overcurrent protection on AR
N>2 AR to IN>4 AR
Cells as for N>1 AR
Above
ISEF>1 AR No Action
No action, Block AR or
Initiate AR
Setting that determines impact of the first stage sensitive earth fault overcurrent protection
on AR operation.
SEF>2 AR to
ISEF>4 AR Cells as
for SEF>1AR
Above
AR SYS CHECKS
CB1L SC all Disabled Enabled or Disabled
This setting determines whether a system check (e.g. live bus / dead line etc) is required
for any auto-reclose of CB1 as leader. If Enabled, system check is required for some or
all reclosures. If Disabled, system check is not required for any reclosures.
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