Siemens SIPROTEC 4, User Manual

Page: 499 / 734

Functional Limits
Power measurement 3-phase for
Ι
Nom
= 1 A With current system > 0.03 A
for
Ι
Nom
= 5 A With current system > 0.15 A
Power measurement 1-phase for
Ι
Nom
= 1 A Phase current > 0.03 A
for Ι
Nom
= 5 A
Phase current > 0.15 A
Times
Pickup times:
Current, voltage (phase quantities)
2 times pickup value
10 times pickup value
approx. 30 ms
approx. 20 ms
Current, voltage (symmetrical components)
2 times pickup value
10 times pickup value
approx. 40 ms
approx. 30 ms
Power
typical
maximum ((small signals and thresholds)
approx. 120 ms
approx. 350 ms
Power factor 300 to 600 ms
Frequency approx. 100 ms
Frequency change df/dt for 1.25 times pickup value approx. 220 ms
Voltage change dV/dt for 2 times pickup value approx. 220 ms
Binary input approx. 20 ms
Dropout times:
Current, voltage (phase quantities)
< 20 ms
Current, voltage (symmetrical components) < 30 ms
Power
typical
maximum
< 50 ms
< 350 ms
Power factor < 300 ms
Frequency < 100 ms
Frequency change < 200 ms
Voltage change < 220 ms
Binary input < 10 ms
Tolerances
Pickup thresholds:
Current
for
Ι
Nom
= 1 A 0.5% of setting value or 10 mA
for
Ι
Nom
= 5 A 0.5% setting value or 50 mA
Current (symmetrical components) for
Ι
Nom
= 1 A 1% of setting value or 20 mA
for
Ι
Nom
= 5 A 1% of setting value or 100 mA
Current (
Ι
2
/
Ι
1
) 1% of setting value
Voltage 1% of setting value or 0.2 V
Voltage (symmetrical components) 2% of setting value or 0.2 V
Voltage change dV/dt 5 % of setting value or 2 V/s (7SJ62)
5 % of setting value or 1.5 V/s (7SJ64)
Technical Data
4.23 Flexible Protection Functions
SIPROTEC 4, 7SJ62/64, Manual 499
C53000-G1140-C207-8, Edition 08.2016