Alstom MiCOM P545 - 1.3.3 Distance elements (only for models with distance option)

Settings P54x/EN ST/La4
MiCOM P543, P544, P545, P546
(ST) 4-17
ST
Setting range
Menu text Default setting
Min. Max.
Step size
DELTA DIRECTION
Delta Status Enabled Disabled or Enabled
Setting used to activate (enable) or turn off (disable) Delta Direction.
To enable (activate) or disable (turn off) delta d
elements. If disabled, the relay uses conventional (no
irection decision used by distance
n delta) directional line.
Delta Char Angle 60° 0° 90° 1°
Setting for the relay characteristic angle used for the delta directional decision.
Dir V Fwd 5 V 1 V 30 V 0.1 V
Setting for the minimum delta voltage change to permit the directional forward decision.
Dir V Rev 4 V 0.5 V 30 V 0.1 V
Setting for the minimum delta voltage change to permit the directional reverse decision.
Dir I Fwd 0.1 x In 0.1 x In 10 x In 0.01 x In
Setting for the minimum d nt change to permit the directional forward decision. elta curre
Dir I Rev 0.08 x In 0.05 x In 10 x In 0.01 x In
Setting for the minimum rrent change to it the dire verse n. delta cu perm ctional re decisio
1.3.3 D
T UP LEMENT line
angles, neutral compensation factors, minimum nt operating levels and line tilting for
r
s
istance elements (only for models with distance option)
he column GRO x DISTANCE E S is used to individually set reaches,
curre
esistive phase faults for each zone if the setting mode is set to ‘Advanced’. In ‘Simple’
etting mode, ‘Distance Elements’ setting can be viewed, but not edited here.
Setting range
Menu text Default setting Step size
Min. Max.
PHASE DISTANCE
Z1 Ph. Reach 8/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for Z1 reach.
Z1 Ph. Angle 70° 20° 90° 1°
Setting of line angle for zone 1.
R1 Ph. Resistive 8/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for Z1 resistive reach. This setting is only visible if Quad is selected.
Z1 Tilt Top Line -3° -30° 30° 1°
Setting of Z1 top reactance line gradient to avoid over-reach for resistive phase faults
under heavy load. Minus angle tilts the reactance line downwards.
Z1 Sensit. Iph>1 0.075 x In 0.05 x In 2 x In 0.01 x In
Current sensitivity setting for Z1 th
operate.
at must be exceeded in faulted phases if Z1 is to
Z2 Ph. Reach 15/In Ω 0.05/In Ω 500/In Ω 0.01/In Ω
Setting for Z2 reach.
Z2 Ph. Angle 70° 20° 90° 1°
Setting of line angle for zone 2.