Siemens 7SK80 Manual page 368

Technical Data
4.3 Inverse-time Overcurrent Protection
Influencing Variables for Pickup and Dropout
Power supply direct voltage in range 0.8 ≤ V
Temperature in range 23.00 °F (–5 °C) ≤ Θ
Frequency in range of 25 Hz – 70 Hz
Frequency in range of 0.95 ≤ f/f
Frequency in range 0.95 ≤ f/f
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
Transient overreaction during first harmonic measuring technique for τ > 100 ms (with full
displacement)
368
/V
Aux AuxNom
≤ 131.00 °F (55 °C)
amb
≤ 1.05 (f
= 50 Hz or 60 Hz)
Nom Nom
≤ 1.05
Nom
≤ 1.15
E50417-G1140-C344-A5, Release date 11.2012
1 %
0.5 %/10 K
1 %
Increased Toler-
ances
1%
1%
<5 %
SIPROTEC, 7SK80, Manual