Siemens SIPROTEC 7UT633*-* N series - Page 477

4.16 Frequency Protection
477
7UT613/63x Manual
C53000-G1176-C160-2
Dropout ratio
Tolerances
Influencing Variables for Pickup
Dropout Ratio
for Undervoltage Blocking
approx. 1.10
Frequencies f>, f<
Undervoltage blocking
Delay times T(f<, f<)
10 mHz (at U = U
N
, f = f
N
)
1 % of the setting value or 0.5 V
1 % of the setting value or 10 ms
Power supply direct voltage in range
0.8 ≤ U
H
/U
HN
≤ 1.15
1 %
Temperature in range
–5 °C ≤ Θ
amb
≤ 55 °C
0.5 %/10 K
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
1 %
1 %