Siemens 7SC80 Manual page 539

Dropout Value
IEC and ANSI (without Disk Emulation)
ANSI with Disk Emulation
Tolerances
Dropout value 46-TOC Drop-Out
Time for Ι /Ι ≤ 0.90
2 2p
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)
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
4.12 Negative Sequence Protection 46-TOC (Inverse Time Characteristic)
approx. 1.05 Ι , setting value, which is approx. 0.95 · pickup
2p
threshold Ι
2
approx. 0.90 Ι setting value
2p
3 %of setting value, or 15 mA for Ι
2p
or 75 mA for Ι
5 % of set point value + 2 % current tolerance, or 30 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
= 1 A
Nom
= 5 A
Nom
1 %
0.5 %/10 K
1 %
increased tolerances
1 %
1 %
<5 %
Technical Data
539