Function Limits
Power measurement three-phase
for Ι
Nom
= 1 A
Positive sequence system current > 0.03 A
for Ι
Nom
= 5 A
Positive sequence system current > 0.15 A
Power measurement single-phase
for Ι
Nom
= 1 A
Phase current > 0.03 A
for Ι
Nom
= 5 A
Phase current > 0.15 A
Relationship Ι
2
/Ι
1
measurement for Ι
Nom
= 1 A
Positive or negative sequence system current > 0.1 A
for Ι
Nom
= 5 A
Positive or negative sequence system current > 0.5 A
Times
Pickup times:
Current, voltage (phase quantities)
for 2 times the setting value
for 10 times the setting value
approx. 30 ms
approx. 20 ms
Current, voltage (symmetrical components)
for 2 times the setting value
for 10 times the setting value
approx. 40 ms
approx. 30 ms
Power
typical
maximum (small signals and threshold values)
approx. 120 ms
approx. 350 ms
Power factor 300 to 600 ms
Frequency approx. 100 ms
Frequency change for 1.25 times the setting value approx. 220 ms
Voltage change dV/dt for 2 times the setting 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 < 200 ms
Binary input < 10 ms
Tolerances
Pickup thresholds:
Current
for Ι
Nom
= 1 A
3% of setting value or 15 mA
for Ι
Nom
= 5 A
3% of setting value or 75 mA
Current (symmetrical components)
for Ι
Nom
= 1 A
4% of setting value or 20 mA
for Ι
Nom
= 5 A
4% of setting value or 100 mA
Current (Ι
2
/Ι
1
)
4% of setting value
Voltage 3% of setting value or 0,2 V
Voltage (symmetrical components) 4% of setting value or 0,2 V
Technical Data
4.20 Flexible Protection Functions
SIPROTEC 4, 7SJ80, Manual 407
E50417-G1140-C343-A8, Edition 12.2017
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