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12.29
Overvoltage Protection with 3-Phase Voltage
Setting Values for Stage Type Definite-Time Overvoltage Protection
Measured value
Method of measurement
Pickup mode
Pickup value
118
Time delay
Dropout ratio
Setting Values for Stage Type Inverse-Time Overvoltage Protection
Measured value
Method of measurement
Pickup mode
Pickup value
Pickup factor
Characteristic constant k
Characteristic constant α
Characteristic constant c
Time multiplier
Additional time delay
Reset time
Operate Curve for Stage Type Inverse-Time Overvoltage Protection
Where
T
Operate delay
op
T
Inverse-time delay
inv
T
Additional time delay (parameter Additional time delay)
add
Where
T
Inverse-time delay
inv
T
Time multiplier (parameter Time dial)
p
V
Measured voltage
118
If you have selected the method of measurement = RMS value, do not set the threshold value under 10 V.
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
12.29 Overvoltage Protection with 3-Phase Voltage
Phase-to-phase
Phase-to-ground
Fundamental component
RMS value
1 out of 3
3 out of 3
0.300 V to 340.000 V
0.00 s to 300.00 s
0.90 to 0.99
Phase-to-phase
Phase-to-ground
Fundamental component
RMS value
1 out of 3
3 out of 3
0.300 V to 340.000 V
1.00 to 1.20
0.00 to 300.00
0.010 to 5.000
0.000 to 5.000
0.05 to 15.00
0.00 s to 60.00 s
0.00 s to 60.00 s
Technical Data
Increments of 0.001 V
Increments of 0.01 s
Increments of 0.01
Increments of 0.001 V
Increments of 0.01
Increments of 0.01
Increments of 0.001
Increments of 0.001
Increments of 0.01
Increments of 0.01 s
Increments of 0.01 s
1507
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