Ground Fault Detection (Sensitive/Insensitive) - Siemens SIPROTEC 4 User Manual

Technical Data

4.17 Ground Fault Detection (Sensitive/Insensitive)

4.17 Ground Fault Detection (Sensitive/Insensitive)
Displacement Voltage Pickup for All Types of Ground Faults
Displacement voltage, measured
Displacement voltage, calculated
Pickup delay T-DELAY Pickup
Additional tripping delay
64-1 DELAY
Operating time
Dropout value
Measurement tolerance
V > (measured)
0
3V > (calculated)
0
Operating time tolerances
Phase Detection for Ground Faults on an Ungrounded System
Measuring Principle
V (Ground Fault Phase)
PHASE MIN
V (Healthy Phase)
PHASE MAX
Measurement Tolerance acc. to VDE 0435, Part
303
Ground Fault Pickup for All Types of Ground Faults (Definite Time Characteristic)
Pickup current 50Ns-2 PICKUP
for sensitive transformer
for normal 1-A transformer
for normal 5-A transformer
Time Delay 50Ns-2 DELAY
Pickup current 50Ns-1 PICKUP
for sensitive transformer
for normal 1-A transformer
for normal 5-A transformer
Time Delay 50Ns-1 DELAY
Dropout Time Delay 50Ns T DROP-OUT
484
V > 1.8 V to 170.0 V or
0
∞(disabled) (7SJ62)
V > 0.4 V to 200.0 V or
0
∞(disabled) (7SJ64)
3V > 10.0 V to 225.0 V
0
0 s to 320.00 s or ∞
0.10 s to 40000.00 s or ∞ (disabled)
approx. 50 ms
0.95 or (pickup value – 0.6 V)
3 % of setting value or 0.3 V
3 % of setting value or 3 V
1 % of setting value or 10 ms
Voltage measurement (phase-ground)
10 V to 100 V
10 V to 100 V
3 % of setting value or 1 V
0.001 A to 1.500 A
0.05 A to 35.00 A
0.25 A to 175.00 A
0.00 s to 320.00 s or ∞ (disabled)
0.001 A to 1.500 A
0.05 A to 35.00 A
0.25 A to 175.00 A
0.00 s to 320.00 s or ∞ (disabled)
0.00 s to 60.00 s
C53000-G1140-C207-8, Edition 08.2016
Increments
0.1 V
Increments
0.1 V
Increments
0.01 s
Increments
0.01 s
Increments 1 V
Increments 1 V
Increments
0.001 A
Increments
0.01 A
Increments
0.05 A
Increments
0.01 s
Increments
0.001 A
Increments
0.01 A
Increments
0.05 A
Increments
0.01 s
Increments 0.01
s
SIPROTEC 4, 7SJ62/64, Manual