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Technical Data
4.6 Distance Protection (optional)
Distance measurement
Characteristic
Setting ranges of polygon:
I
> = min. current phases
Ph
X = reactance reach
R = resistance tolerance phase-phase
RE = resistance tolerance phase-earth
= line angle
ϕ
Line
= angle of distance protection characteristic
ϕ
Dist
= tilt angle for 1st zone
α
Pol
Direction determination for polygonal characteristic:
For all types of faults
Directional sensitivity
Each zone can be set to operate in forward or reverse direction, non-directional or ineffective.
Setting ranges of the MHO characteristic:
I
> = min. current, phases
PH
Z
= impedance reach
r
= line angle
ϕ
Line
= angle of distance protection characteristic
ϕ
Dist
Polarization
Each zone can be set to operate in forward or reverse direction or ineffective.
Load trapezoid:
R
= minimum load resistance
Load
= maximum load angle
ϕ
Load
Dropout ratio
– Currents
– Impedances
Measured value correction
Measuring tolerances for sinusoidal measured values
594
Polygonal or MHO characteristic (depending on ordered vari-
ant); 6 independent zones and 1 controlled zone
for I
= 1 A
0.05 A to 4.00 A
N
for I
= 5 A
0.25 A to 20.00 A
N
for I
= 1 A
0.050 Ω to 600,000 Ω
N
for I
= 5 A
0.010 Ω to 120,000 Ω
N
for I
= 1 A
0.050 Ω to 600,000 Ω
N
for I
= 5 A
0.010 Ω to 120,000 Ω
N
for I
= 1 A
0.050 Ω to 600,000 Ω
N
for I
= 5 A
0.010 Ω to 120,000 Ω
N
10° to 89°
30° to 90°
0° to 30°
With phase-true, memorized or cross-polarized voltages
Dynamically unlimited
Stationary approx. 1V
for I
= 1 A
0.05 A to 4.00 A
N
for I
= 5 A
0.25 A to 20.00 A
N
for I
= 1 A
0.050 Ω to 200,000 Ω
N
for I
= 5 A
0.010 Ω to 40,000 Ω
N
10° to 89°
30° to 90°
With memorized or cross-polarized voltages
for I
= 1 A
0.050 Ω to 600,000 Ω; ∞
N
for I
= 5 A
0.010 Ω to 120,000 Ω; ∞
N
20° to 60°
Approx. 0.95
Approx. 1.06
Mutual impedance matching for parallel lines (order option)
Increments 0.01 A
Increments 0.001 Ω
Increments 0.001 Ω
Increments 0.001 Ω
Increments 1°
Increments 1°
Increments 1°
Increments 0.01 A
Increments 0.001 Ω
Increments 1°
Increments 1°
Increments 0.001 Ω
Increments 1°
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
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