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
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