Siemens SIPROTEC, Руководство пользователя

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Technical Data
4.6 Distance Protection (optional)
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
593
Pickup (optional)
Overcurrent Pickup
Overcurrent
I ph>> for I
N
= 1 A 0.25 A to 10.00 A Increments 0.01 A
for I
N
= 5 A 1.25 A to 50.00 A
Dropout to pickup ratio Approx. 0.95
Measuring tolerances for sinusoidal measured values
±
5 %
Voltage and angle-dependent current pickup (U/ I /
ϕ
) (selectable)
Characteristic Different stages with settable inclinations
Minimum current I ph> for I
N
= 1 A 0.10 A to 4.00 A Increments 0.01 A
for I
N
= 5 A 0.50 A to 20.00 A
Current in fault angle range I
ϕ
for I
N
= 1 A 0.10 A to 8.00 A Increments 0.01 A
for I
N
= 5 A 0.50 A to 40.00 A
Undervoltage phase-earth Uphe
(segregated for
I
ph>,
I ϕ
> and
I
ph>>)
20 V to 70 V Increments 1 V
Undervoltage phase-phase Uphph
(segregated for
I ph>, I
ϕ
> and I ph>>)
40 V to 130 V Increments 1 V
Lower threshold angle
ϕ
> 30° to 60° In increments of 1°
Upper threshold angle
ϕ
< 90° to 120° In increments of 1°
Dropout to pickup ratio
I ph>, I f> Approx. 0.95
Uphe, Uphph Approx. 1.05
Measuring tolerances for sinusoidal measured values
Values of U,
I
±
5 %
Angle
ϕ ±
3°
Impedance starting (selectable)
Minimum current
I ph> for I
N
= 1 A 0.05 A to 4.00 A Increments 0.01 A
for I
N
= 5 A 0.25 A to 20.00 A
The thresholds of the zone set to the highest level are relevant taking into consideration the corresponding direction
Dropout/pickup ratio
Approx. 1.05