Frequency Operating Range
0.9 ≤ f/f
rated
≤ 1.1
According to specified tolerances
10 Hz ≤ f < 0.9 f
rated
1.1 f
rated
< f ≤ 90 Hz
Slightly expanded tolerances
f < 10 Hz
f > 90 Hz
Active with reduced sensitivity
Tolerances
Currents, method of measurement = fundamental
component
1 % of the setting value or 5 mA (I
rated
= 1 A)
or 25 mA (I
rated
= 5 A)
Currents, method of measurement = RMS value
(33 % part of harmonic, referring to fundamental component)
Up to 30th harmonic
1 % of the setting value or 5 mA (I
rated
= 1 A)
or 25 mA (I
rated
= 5 A)
Up to 50th harmonic, f
rated
= 50 Hz
3 % of the setting value or 20 mA (I
rated
= 1 A)
or 100 mA (I
rated
= 5 A)
Up to 50th harmonic, f
rated
= 60 Hz
4 % of the setting value or 20 mA (I
rated
= 1 A)
or 100 mA (I
rated
= 5 A)
Time delays
1 % of the setting value or 10 ms
Direction-determination angle error
1º
Influencing Variables for Threshold Values
Transient excess pickup in method of measurement =
fundamental component, for τ > 100 ms (with
complete unbalance)
< 5 %
Stage with Inverse-Time Characteristic Curve
Setting Values for the Function Direction Determination
Method for direction determination
Zero sequence
Negative sequence
–
Minimum V0 or V2 threshold
0.150 V to 20.000 V
0.001 V
Rotation angle of the reference voltage
-180° to 180°
1°
Forward range
0° to 180°
1°
Setting Values
Direction mode
Forward
Reverse
–
Method of measurement
Fundamental component
RMS value
–
Threshold value
1 A @ 100 Irated
0.030 A to 35.000 A
Increments of 0.001 A
5 A @ 100 Irated
0.15 A to 175.00 A
Increments of 0.01 A
Type of characteristic curve
Characteristic curves according to IEC and ANSI
Dropout
Disk emulation
Instantaneous
–
11.18.2
Technical Data
11.18 Directional Overcurrent Protection, Ground
SIPROTEC 5, Low-Impedance Busbar Protection, Manual
953
C53000-G5040-C019-C, Edition 04.2021