Application Notes P54x/EN AP/La4
MiCOM P543, P544, P545 & P546
(AP) 6-79
AP
5.4.2 CONFIGURATION menu:
In the CONFIGURATION column, the following should all be set to Enabled :-
Distance (09 0B)
System Checks (09 23)
Auto-Reclose (09 24)
5.4.3 CT & VT RATIOS menu:
In the CT & VT RATIOS c
olumn, the following should be set :-
Main VT Primary (0A 01): set nominal system primary ph-ph voltage (500 kV);
Main VT Sec’y (0A 02): set 110 V;
CB1 CS VT Prim’y (0A 03): set nominal system primary ph-ph voltage (500 kV);
CB1 CS VT Sec’y (0A 04): set 110 V;
CB2 CS VT Prim’y (0A 05): set nominal system primary ph-ph voltage (500 kV);
CB2 CS VT Sec’y (0A 06): set 110 V;
CS Input (0A 0F): set A-N;
CB1 CS VT PhShft (0A 21): set -30 degrees (this creates a “compensated” Bus1 phase
angle normally in phase with the selected CS Input);
CB1 CS VT Mag (0A 22): set 0.58 (this creates a “compensated” Bus1 voltage
magnitude normally equal to that of the selected CS Input);
CB2 CS VT PhShft (0A 23): set -30 degrees (this creates a “compensated” Bus2 phase
angle normally in phase with the selected CS Input);
CB2 CS VT Mag (0A 24): set 0.58 (creates a “compensated” Bus2 voltage magnitude
normally equal to that of the selected CS Input);
Note: VT secondary voltage settings in this section of the menu are always
set in terms of phase to phase values, even when the actual inputs
are taken from phase to neutral VT terminals.
5.4.4 GROUP 1 LINE PARAMETERS menu:
In the GROUP 1 LINE PA
RAMETERS column, the following should be set :-
CB1Tripping Mode (30 0C): set 1 and 3 Pole;
CB2Tripping Mode (30 0E): set 3 Pole.
5.4.5 GROUP 1 DISTANCE menu:
In the GROUP 1 DISTANCE column, appropriate settings should be applied and the
elements enabled as per the operational requirements. Operation of the zone 1 tripping
and/or the operation of the aided schemes will initiate auto-reclose.
5.4.6 GROUP 1 PHASE DIFF menu:
In the GROUP 1 PHASE DIFF column, appropriate settings should be applied and the
elements enabled as per the operational requirements. Operation of phase differential
tripping will initiate auto-reclose.
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