Programmable Logic P54x/EN PL/La4
MiCOM P543, P544, P545 & P546
(PL) 7-151
DDB #744
Zone 1 N Start
DDB #748
Zone 2 N Start
DDB #752
Zone 3 N Start
DDB #760
Zone 4 N Start
DDB #777
IN>1 Start
DDB #778
IN>2 Start
DDB #780
IN>4 Start
1
Any Ground Start >> page8
DDB #1013
Phase Select N
DDB #522
Any Trip
&
DDB #036
Input L5
DDB #1013
Phase Select N
DDB #522
Any Trip
Pulse
10
0
&
1
DDB #959
Started Phase N
DDB #444
Reset Relays/LED
DDB #781
ISEF>1 Start
DDB #782
ISEF>2 Start
DDB #783
ISEF>3 Start
DDB #784
ISEF>4 Start
Any Ground Start >> page8
Any Ground Start >> page8
DDB #756
Zone P N Start
Any Phase Start >> page8>>page6 Any Phase Start
N Phase Start >> page8 then page 9 then page 10
This logic ensures correct N
indications for faults involving
ground. The pulse prevents pole
scatter affecting the N
indication.
This logic clears all latched indications
at the start of Any Trip
This reset
controls: Reset
latched relays,
Reset latched
LEDs.
DDB #1385
AR In Service &
DDB #779
IN>3 Start
PL
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