Siemens SIPROTEC 4 7UT6 Series Manual page 452

Technical Data
4.16 Frequency Protection
Tolerances
Frequencies f>, f<
Undervoltage blocking
Delay times T (f<, f<)
Influencing Variables for Pickup
Power supply direct voltage in range
0.8 ≤ U /U ≤ 1.15
H HN
Temperature in range –5 °C ≤ Θ
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
452
10 mHz (at U = U , f = f
N
1 % of the setting value or 0.5 V
1 % of the setting value or 10 ms
≤ 55 °C
amb
)
N
1 %
0.5 %/10 K
1 %
1 %
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016