Overvoltage Protection With Positive-Sequence Voltage - Siemens SIPROTEC 5 Technical Data Manual

Technical Data

11.18 Overvoltage Protection with Positive-Sequence Voltage

11.18 Overvoltage Protection with Positive-Sequence Voltage
Setting Values
Pickup value
Time delay
Dropout ratio
Dropout
The greater dropout differential (= | pickup value – dropout value |) of the following 2 criteria
applies:
Dropout differential derived from the parameter Dropout ratio
If this parameter is not available, a dropout ratio of 95 % applies for the overvoltage and of 105 % for the
undervoltage functionality.
Minimum absolute dropout differential
Times
Operate time with time delay = 0 ms
Dropout time
Frequency Operating Range
0.9 ≤ f/f ≤ 1.1
rated
10 Hz ≤ f < 0.9 f
1.1 f < f ≤ 80 Hz
rated
f < 10 Hz
f > 80 Hz
Tolerances
Voltages
Time delays
72 OOT (Output Operating Time): additional delay of the output medium used, see Chapter
1170
rated
0.300 V to 200.000 V
0.00 s to 60.00 s
0.90 to 0.99
150 mV sec.
Approx. 25 ms + OOT 72 at 50 Hz
Approx. 22 ms + OOT at 60 Hz
Approx. 20 ms + OOT
According to specified tolerances
Slightly expanded tolerances
Active
0.5 % of the setting value or 0.05 V
1 % of the setting value or 10 ms
11.1.4 Relay Outputs
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-A, Edition 05.2018
Increments of 0.001 V
Increments of 0.01 s
Increments of 0.01