Negative-Sequence Protection With Definite-Time Characteristic Curve - Siemens SIPROTEC 5 Technical Data Manual

11.29 Negative-Sequence Protection with Definite-Time Characteristic
Curve
Setting Values
Reference value for I
Pickup value
Time Delay
Release current
(minimum current
release)
Maximum phase
current (maximum
current limiting)
Times
Pickup times
Dropout times
Dropout Ratio
Pickup value
Operating Ranges
Current range
Frequency range
Tolerances
Pickup value
I /I
2 rated, obj
I /I
2 1
Time delays
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-A, Edition 05.2018

11.29 Negative-Sequence Protection with Definite-Time Characteristic Curve

(I )
2 ref
1 A @ 50 and 100 Irated 0.030 A to 10.000 A
5 A @ 50 and 100 Irated 0.15 A to 50.00 A
1 A @ 50 and 100 Irated 0.030 A to 35.000 A
5 A @ 50 and 100 Irated 0.15 A to 175.00 A
Approx. 35 ms + OOT
Approx. 35 ms + OOT
Approx. 0.95 for I
0.05 x I
rated, obj
10 Hz to 80 Hz
Approx. 2 % of the setting value or 0.8 % absolute value (transformer
mismatching < 4)
Approx. 2 % of the setting value or 4 % absolute value (I
or 250 mA (5 A))
1 % of the setting value or 10 ms
Rated object current I
rated, obj.
Positive sequence current I
1
5.0 % to 999.9 % l /l
2 ref
0.00 s to 60.00 s
/I ≥ 0.3
2 ref
≤ all phase currents ≤ setting value I
Technical Data
Increments of 0.1
Increments of 0.01 s
Increments of 0.001 A
Increments of 0.01 A
Increments of 0.001 A
Increments of 0.01 A
ph, max
> 50 mA (1 A)
1
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