Overvoltage Protection
Setting Ranges / Increments
Pickup Thresholds U>, U>>
30.0 V to 170.0 V
Increments 0.1 V
Dropout Ratios DR
(Stufen U>, U>>)
0.90 to 0.99
Increments 0.01
Time Delays T U>, T U>>
0.00 s to 60.00 s
or ∞ (disabled)
Increments 0.01 s
The set times are pure delay times with definite time protection.
Times
Pickup times U>, U>>
50/60 Hz
approx. 30 ms
16.7 Hz
approx. 70 ms
Dropout times U>, U>>
50/60 Hz
approx. 30 ms
16.7 Hz
approx. 70 ms
Tolerances
Voltage limits
Pickup voltages U>, U>>
1 % of setting value or 0.5 V
Delay Times T
1 % of setting value or 10 ms
Influencing Variables for Pickup
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
Frequency in range 0.95 ≤ f/f
N
≤ 1.05
≤ 1 %
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
≤ 1 %
≤ 1 %
4.15
Technical Data
4.15 Overvoltage Protection
450
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
Содержание SIPROTEC 4 7UT6 Series
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Страница 683: ...Z Zero sequence currents 109 Index SIPROTEC 4 7UT6x Manual 683 C53000 G1176 C230 5 Edition 09 2016 ...
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