4 Technical Data
266
7ST6 Manual
E50417-G1176-C251-A3
4.2
Distance Protection
Distance Measurement
Pickup Values for Zone Z2 and Z3
Characteristic
Polygonal or combined
Setting ranges
I
Ph
> = min. current, phases
for I
N
= 1 A 0.10 A to 2.00 A
0.1 to 2.0 * I
N
for I
N
= 5 A 0.50 A to 10.00 A
R1, X1, Z1, R1 Reverse, X1 Reverse, Z1
Reverse, R1, X1, Z1, R2, X2, Z2, R2 Re-
verse, X2 Reverse, Z2 Reverse, R3, X3,
Z3, R3 Reverse, X3 Reverse, Z3 Re-
verse, R1B, X1B, Z1B, R1B Reverse,
X1B Reverse, Z1B Reverse, R1L, X1L,
Z1L, R1L Reverse, X1L Reverse, Z1L
Reverse, ROR, XOR ZOR, ROR Re-
verse, XOR Reverse, ZOR Reverse, X1
Stroke, Z1 Stroke, X2 Stroke, Z2 Stroke,
X3 Stroke, Z3 Stroke,
For I
N
= 1 A 0.2
Ω
to 250
Ω
For I
N
= 5 A 0.04
Ω
to 50
Ω
ALPHA Z1, ALPHA Z2, ALPHA Z3
Angle limitation zone Z1, Z2, Z3 right
–70
°
to 75
°
Increments 1
°
BETA Z1, BETA Z2, BETA Z3
Angle limitation zone Z1, Z2, Z3 left
70
°
to 145
°
Increments 1
°
GAMMA Z1, GAMMA Z2, GAMMA Z3
Angle limitation zone Z1, Z2, Z3 left under axis R
–70
°
to 40
°
Increments 1
°
Z2 DI/DT di/dt function
0; 0.1..1.0 I/IN;
∞
Increments 0.1 I/IN
Z2 DU/DT du/dt function
0; 0.1..1.0 U/UN;
∞
Increments 0.1 U/UN
Z2 U< U< function
0.5; 0.1..1.0 U/UN;
∞
Increments 0.1 U/UN
Z3 DI/DT di/dt function for zone Z2
0; 0.1..1.0 I/IN;
∞
Increments 0.1 I/IN
Z3 DU/DT du/dt function for zone Z2
0; 0.1..1.0 U/UN;
∞
Increments 0.1 U/UN
Z3 U< U< function for zone Z2
0.5; 0.1..1.0 U/UN;
∞
Increments 0.1 U/UN
Measuring tolerances for sinusoidal measured values
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