Overvoltage Protection - Siemens SIPROTEC 4 7VE61 Manual

4.5

Overvoltage Protection

Setting Ranges/Increments
Measured Quantity
Pickup thresholds U>, U>>
Dropout ratio U>, U>>
Time Delays T U>, T U>>
The set times are pure delay times.
Operating Times
Pickup times/dropout times
Tolerances
Pickup voltages U<, U<<
Delay times T
Influencing Variables for Pickup Values
Power supply direct voltage in range 0.8 ≤ U
Temperature in range –5 °C ≤ Θ
Frequency in range 0.95 ≤ f/f
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017
Fundamental component of one of the undervoltage
voltages connected to the measuring inputs (selectable)
30.0 V to 200.0 V
0.90 to 0.99
0.00 s to 60.00 s
or ∞ (ineffective)
approx. 55 ms at f
approx. 48 ms at f
approx. 145 ms at f
1 % of setting value or 0.5 V
1 % of setting value or 10 ms
/U ≤ 1.15
Aux AuxN
≤ 55 °C
amb
≤ 1.05
N
4.5 Overvoltage Protection
Increments 0.1 V
Increments 0.01
Increments 0.01 s
= 50 Hz
N
= 60 Hz
N
= 16.7 Hz
N
≤ 1 %
≤ 0.5 %/10 K
≤ 1 %
≤ 1 %
≤ 1 %
Technical Data
207