Siemens 7SC80 - Negative Sequence Protection 46-1, 46-2 (Definite Time Characteristic)

Negative Sequence Protection 46-1, 46-2 (Definite Time
Characteristic)
Setting Ranges/Increments
Unbalanced load elements 46-1,
46-2
for Ι
Nom
= 1 A
0.10 A to 3.00 A or ∞ (disabled) Increments
0.01 A
for Ι
Nom
= 5 A
0.50 A to 15.00 A or ∞ (disabled)
Delay times 46-1 Delay, 46-2 Delay 0.00 s to 60.00 s or ∞ (disabled) Increments
0.01 s
Dropout time delays 46 T DROP-OUT 0.00 s to 60.00 s Increments 0.01
s
Functional Limit
Functional limit
for Ι
Nom
= 1 A
All phase currents ≤ 10 A
for Ι
Nom
= 5 A
All phase currents ≤ 50 A
Times
Pickup times
Dropout times
approx. 35 ms
approx. 35 ms
Dropout Ratio
Element characteristic 46-1, 46-2
approx. 0.95 for Ι
2
/Ι
Nom
≥ 0.3
Tolerances
Pickup values 46-1, 46-2
3 % of setting value or 15 mA for Ι
Nom
= 1 A or 75 mA for Ι
Nom
= 5 A
Time delays 1 % or 10 ms
Influencing Variables for Pickup and Dropout Values
Auxiliary direct voltage in the range of 0.8 ≤ V
PS
/V
PSNom
≤ 1.15 1 %
Temperature in the range of 23.00 °F (-5 °C) ≤ Θ
amb
≤ 131.00 °F (55 °C) 0.5 %/10 K
Frequency in the range of 25 Hz to 70 Hz
Frequency in the range of 0.95 ≤ f/f
Nom
≤ 1.05 (f
Nom
= 50 Hz or 60 Hz) 1 %
Frequencies outside the range of 0.95 ≤ f/f
Nom
≤ 1.05 increased tolerances
Harmonics
- up to 10 % 3. harmonic
- up to 10 % 5. harmonic
1 %
1 %
Transient overreaction for τ > 100 ms (with full displacement) <5 %
4.11
Technical Data
4.11 Negative Sequence Protection 46-1, 46-2 (Definite Time Characteristic)
536 SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017