P54x/EN ST/La4 Settings
(ST) 4-18
MiCOM P543, P544, P545, P546
ST
Setting range
Menu text Default setting
Min. Max.
Step size
R2 Ph. Resistive 15/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for Z2 resistive reach.
Z2 Tilt Top Line -3° -30° 30° 1°
Setting of Z2 top reactance line gradient.
Z2 Sensit. Iph>2 0.075 x In 0.05 x In 2 x In 0.01 x In
Zone 2 nt sensitivity. curre
Z3 Ph. Reach 25/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for Z3 reach.
Z3 Ph. Angle 70° 20° 90° 1°
Setting of line angle for zone 3.
Z3’ Ph. Rev Reach 1/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for Z3 offset (reverse) reach. This setting is only visible if ‘Z3 Offset’ is enabled in
‘GROUP x DISTANCE SETUP’.
R3 Ph. Res Fwd. 25/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for Z3 resistive reach that defines Quad’s right hand line.
R3 Ph. Res Rev. 1/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for Z3 resistive re that defines Quad’s left hand line. s is settable only if ach Thi
Phase Chars. is Quad and Z3 offset is enabled otherwise is fixed to 25% of the right hand
blinder.
Z3 Tilt Top Line -3° -30° 30° 1°
Setting of Z3 top reactance line gradient.
Z3 Sensit. Iph>3 0.050 x In 0.05 x In 2 x In 0.01 x In
Zone 3 current sensitivity.
ZP Ph. Reach 20/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for ZP reach.
ZP Ph. Angle 70° 20° 90° 1°
Setting of line angle for P. zone
RP Ph. Resistive 20/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for ZP resistive reach.
ZP Tilt Top Line -3° -30° 30° 1°
Setting of ZP top reactance line gradient.
ZP Sensit. Iph>P 0.05 x In 0.05 x In 2 x In 0.01 x In
Zone P current sensitivity.
Z4 Ph. Reach 15/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for Z4 reach. This is a common setting for Z4 time delayed and Z4 high speed
elements used in blocking schemes and for current reversal guard.
Z4 Ph. Angle 70° 20° 90° 1°
Setting of line angle for zone 4.
R4 Ph. Resistive 15/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for ZP resistive reach.
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