Overvoltage Protection; Siprotec 4, 7Ut6X, Manual - Siemens SIPROTEC 4 7UT6 Series Manual

Technical Data

4.15 Overvoltage Protection

4.15 Overvoltage Protection
Setting Ranges / Increments
Pickup Thresholds U>, U>>
Dropout Ratios DR
(Stufen U>, U>>)
Time Delays T U>, T U>>
The set times are pure delay times with definite time protection.
Times
Pickup times U>, U>>
Dropout times U>, U>>
Tolerances
Voltage limits
Pickup voltages U>, U>>
Delay Times T
Influencing Variables for Pickup
Power supply direct voltage in range
0.8 ≤ U /U ≤ 1.15
H HN
Temperature in range –5 °C ≤ Θ
Frequency in range 0.95 ≤ f/f
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
450
30.0 V to 170.0 V
0.90 to 0.99
0.00 s to 60.00 s
or ∞ (disabled)
50/60 Hz
16.7 Hz
50/60 Hz
16.7 Hz
1 % of setting value or 0.5 V
1 % of setting value or 10 ms
≤ 1 %
≤ 55 °C ≤ 0.5 %/10 K
amb
≤ 1.05 ≤ 1 %
N
≤ 1 %
≤ 1 %
Increments 0.1 V
Increments 0.01
Increments 0.01 s
approx. 30 ms
approx. 70 ms
approx. 30 ms
approx. 70 ms

SIPROTEC 4, 7UT6x, Manual

C53000-G1176-C230-5, Edition 09.2016