Siemens SIPROTEC 4 7SD80 Manual page 288

Line differential protection
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Technical Data
4.16 Flexible Protection Functions
Times
Influencing Variables for Pickup Values
Auxiliary DC voltage in range 0.8 ≤ V
Temperature in range –5 °C (23 °F) ≤ Θ
Frequency in the range of 25 Hz to 70 Hz
Frequency in the range of 0.95 ≤ f/f
Frequency outside range 0.95 ≤ f/f
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
288
/V
≤ 1,15
Aux
AuxNom
≤ 55 °C (131 °F)
amb
≤ 1.05 (f
= 50 Hz or 60 Hz)
Nom
Nom
≤ 1.05
Nom
1% of setting value or 10 ms
1 %
0.5 %/10 K
1 %
Increased tolerances
1 %
1 %
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018

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