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Tolerances
Voltages
Time delays
12.10.6
Undervoltage Protection with 3-Phase Voltage
Setting Values for Stage Type Definite Time-Undervoltage Protection
Measured value
Method of measurement
Current-flow criterion
Threshold value I>
Threshold value
Time delay
Dropout ratio
Setting Values for Stage Type Inverse Time-Undervoltage Protection
Measured value
Method of measurement
Current-flow criterion
Threshold value I>
Threshold value
Pickup factor
Characteristic constant k
Characteristic constant α
Characteristic constant c
Time multiplier
Additional time delay
Reset time
Operate Curve
T
=T
+ T
op
Inv
add
Where:
T
op
64
If you have selected the Method of measurement = RMS value, do not set the threshold value to less than 10 V.
SIPROTEC 5, Merging Unit 6MU85, Manual
C53000-G5040-C074-1, Edition 01.2020
1 A @ 50 and 100 Irated
5 A @ 50 and 100 Irated
1 A @ 1.6 Irated
5 A @ 1.6 Irated
64
1 A @ 50 and 100 Irated
5 A @ 50 and 100 Irated
1 A @ 1.6 Irated
5 A @ 1.6 Irated
Operate delay
0.5 % of the setting value or 0.05 V
1 % of the setting value or 10 ms
Phase-to-phase
Phase-to-ground
Fundamental component
RMS value
On
Off
0.030 A to 10.000 A
0.15 A to 50.00 A
0.001 A to 1.600 A
0.005 A to 8.000 A
0.300 V to 175.000 V
0.00 s to 60.00 s
1.01 to 1.20
Phase-to-phase
Phase-to-ground
Fundamental component
RMS value
On
Off
0.030 A to 10.000 A
0.15 A to 50.00 A
0.001 A to 1.600 A
0.005 A to 8.000 A
0.300 V to 175.000 V
0.80 to 1.00
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
12.10 Voltage Protection
Increments of 0.001 A
Increments of 0.01 A
Increments of 0.001 A
Increments of 0.001 A
Increments of 0.001 V
Increments of 0.01 s
Increments of 0.01
Increments of 0.001 A
Increments of 0.01 A
Increments of 0.001 A
Increments of 0.001 A
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
839
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