Siemens SIPROTEC 4 User Manual page 490

Technical Data
4.17 Ground Fault Detection (Sensitive/Insensitive)
Direction Determination for all Types of Ground Fault with cos φ / sin φ Measurement
Direction determination
Measuring principle
Measuring release RELEASE DIRECT.
(current component perpendicular to directional limit
line)
for sensitive transformer
for normal 1-A transformer
for normal 5-A transformer
Dropout ratio
Measuring method
Directional limit line PHI CORRECTION
Dropout delay RESET DELAY
Limitation of the directional areas using α1 and α2
Angle tolerance
Direction Determination for all Types of Ground Fault with V0 ϕ / I0 ϕ Measurement
Direction determination
Measuring principle
50Ns-1 element
Minimum voltage 50Ns-1 Vmin
V0 measured 7SJ64
V0 measured 7SJ62
3V0 calculated
Phase angle 50Ns-1 Phi
Delta phase angle 50Ns-1 DeltaPhi
50Ns-2 element
Minimum voltage50Ns-2 Vmin
V0 measured 7SJ64
V0 measured 7SJ62
3V0 calculated
Phase angle 50Ns-2 Phi
Delta phase angle 50Ns-2 DeltaPhi
Angle tolerance
Angle Correction
Angle correction for cable converter in two operating points F1/I1 and F2/I2:
Angle correction F1, F2 (for grounded system)
490
- Ι and V gemessen
N N
- 3Ι and 3V berechnet
0 0
Real/reactive power measurement
0.001 A to 1.200 A
0.05 A to 30.00 A
0.25 A to 150.00 A
approx. 0.80
cos φ and sin φ
-45.0° to +45.0°
0 s to 60 s
1° to 15°
3°
- Ι and V measured
N N
- 3Ι and 3U calculated
0 0
V0 / Ι0–phase angle measurement
0,4 V to 50 V
1.8 V to 50 V
10 V to 90 V
- 180° to 180°
0° to 180°
0.4 V to 50 V
1.8 V to 50 V
10 V to 90 V
- 180° to 180°
0° to 180°
3°
0.0° to 5.0°
C53000-G1140-C207-8, Edition 08.2016
Increments
0.001 A
Increments
0.01 A
Increments
0.05 A
Increments 0.1°
Increments 1 s
Increments 1°
Increments
0,1 V
Increments
0,1 V
Increments 1 V
Increments 1°
Increments 1°
Increments
0.1 V
Increments
0.1 V
Increments 1 V
Increments 1°
Increments 1°
Increments 0.1°
SIPROTEC 4, 7SJ62/64, Manual