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

Technical Data

4.11 Negative Sequence Protection 46-1, 46-2 (Definite Time Characteristic)

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