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Technical Data
12.10 Voltage Protection
Tolerances
Voltages
Currents
Time delays
12.10.8
Undervoltage Protection with Any Voltage
Setting Values
Measured value
Method of measurement
Threshold 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, typical
Operate time with time delay = 0 ms, maximum
If you have selected the method of measurement = RMS value, do not set the threshold value under 10 V.
67
68
OOT (Output Operating Time): additional delay of the output medium used, see Chapter
842
Measured phase-to-ground voltage V
Measured phase-to-ground voltage V
Measured phase-to-ground voltage V
Measured phase-to-phase voltage V
Measured phase-to-phase voltage V
Measured phase-to-phase voltage V
Calculated phase-to-phase voltage V
Calculated phase-to-phase voltage V
Calculated phase-to-phase voltage V
Calculated voltage V0
Fundamental component
RMS value
67
0.300 V to 340.000 V
0.00 s to 60.00 s
1.01 to 1.20
0.5 % of the setting value or 0.05 V
1 % of the setting value or 5 mA (I
25 mA (I
= 5 A, f
± 10 %),
rated
rated
valid for protection-class current transformers
1 % of the setting value or 0.1 mA (I
0.5 mA (I
= 8 A, f
± 10 %),
rated
rated
valid for instrument transformers
1 % of the setting value or 10 ms
A
B
C
AB
BC
CA
AB
BC
CA
Increments of 0.001 V
Increments of 0.01 s
Increments of 0.01
150 mV sec.
68
Approx. 25 ms + OOT
at 50 Hz
Approx. 22 ms + OOT at 60 Hz
Approx. 30 ms + OOT at 50 Hz
Approx. 26 ms + OOT at 60 Hz
12.1.4 Relay Outputs
SIPROTEC 5, Merging Unit 6MU85, Manual
C53000-G5040-C074-1, Edition 01.2020
= 1 A) or
rated
= 1.6 A) or
rated
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