P54x/EN PL/La4 Programmable Logic
(PL) 7-38
MiCOM P543, P544, P545 & P546
PL
DDB no. English text Source Description
980 ZoneP CN Element Distance Elements Zone P CN ground fault element
981 ZoneP AB Element Distance Elements Zone P AB phase fault element
982 ZoneP BC Element Distance Elements Zone P BC phase fault element
983 ZoneP CA Element Distance Elements Zone P CA phase fault element
984 Zone4 AN Element Distance Elements Zone 4 AN ground fault element
985 Zone4 BN Element Distance Elements Zone 4 BN ground fault element
986 Zone4 CN Element Distance Elements Zone 4 CN ground fault element
987 Zone4 AB Element Distance Elements Zone 4 AB phase fault element
988 Zone4 BC Element Distance Elements Zone 4 BC phase fault element
989 Zone4 CA Element Distance Elements Zone 4 CA phase fault element
990 to 995 Not used
996 DEF Forward Directional Earth Fault
DEF forward (directional earth fault aided
scheme detector)
997 DEF Reverse Directional Earth Fault
DEF reverse (directional earth fault aided
scheme detector)
998 Delta Dir FWD AN Delta Directional Element Delta directional scheme forward AN detection
999 Delta Dir FWD BN Delta Directional Element Delta directional scheme forward BN detection
1000 Delta Dir FWD CN Delta Directional Element Delta directional scheme forward CN detection
1001 Delta Dir FWD AB Delta Directional Element Delta directional scheme forward AB detection
1002 Delta Dir FWD BC Delta Directional Element Delta directional scheme forward BC detection
1003 Delta Dir FWD CA Delta Directional Element Delta directional scheme forward CA detection
1004 Delta Dir Rev AN Delta Directional Element Delta directional scheme reverse AN detection
1005 Delta Dir Rev BN Delta Directional Element Delta directional scheme reverse BN detection
1006 Delta Dir Rev CN Delta Directional Element Delta directional scheme reverse CN detection
1007 Delta Dir Rev AB Delta Directional Element Delta directional scheme reverse AB detection
1008 Delta Dir Rev BC Delta Directional Element Delta directional scheme reverse BC detection
1009 Delta Dir Rev CA Delta Directional Element Delta directional scheme reverse CA detection
1010 Phase Select A Phase Selector Phase selector - phase A pickup
1011 Phase Select B Phase Selector Phase selector - phase B pickup
1012 Phase Select C Phase Selector Phase selector - phase C pickup
1013 Phase Select N Phase Selector Phase selector - neutral indication
1014 P Swing Detector Powerswing Blocking Power swing detected
1015 PSB Fault Powerswing Blocking Power swing block fault
1016 I(2)/I(1)> A Inrush Detector
2nd harmonic current ratio exceeds threshold
on phase A (may be used to block any
instantaneous distance elements that reach
through the reactance of a power transformer)
1017 I(2)/I(1)> B Inrush Detector
2nd harmonic current ratio exceeds threshold
on phase B (may be used to block any
instantaneous distance elements that reach
through the reactance of a power transformer)
1018 I(2)/I(1)> C Inrush Detector
2nd harmonic current ratio exceeds threshold
on phase C (may be used to block any
instantaneous distance elements that reach
through the reactance of a power transformer)
1019 I(2)/I(1)> N Inrush Detector
2nd harmonic current ratio exceeds threshold
on neutral current measurement (may be used
to block any instantaneous distance elements
that reach through the reactance of a power
transformer)
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