Siemens SIPROTEC 5 7VE85 Manual page 52

Technical Data
12.10 Overcurrent Protection, Ground
Frequency Operating Range
0.9 ≤ f/f ≤ 1.1
rated
10 Hz ≤ f < 0.9 f
1.1 f < f ≤ 80 Hz
rated
f < 10 Hz
f > 80 Hz
Tolerances
3I0 measured via I4
fundamental component
3I0 measured via I4
(33 % harmonics, in relation to fundamental component)
Up to 30th harmonic
Up to 50th harmonic, f
Up to 50th harmonic, f
Operate time for 2 ≤ I/I threshold value ≤ 20
Dropout time for I/I threshold value ≤ 0.90
Influencing Variables for Thresholds
Transient excess pickup in method of measurement =
fundamental component, for τ > 100 ms (with
complete unbalance)
Operate Curves and Dropout-Time Characteristic Curves According to IEC
Extension of the operate time during operation with
transformer inrush-current detection
58 Insignificantly increased tolerances will occur during the calculation of 3I0, maximum factor of 2
59 Insignificantly increased tolerances will occur during the calculation of 3I0, maximum factor of 2
752
rated
58 , method of measurement =
59 , method of measurement = RMS value
= 50 Hz
rated
= 60 Hz
rated
According to specified tolerances
Slightly expanded tolerances
Active
1 % of the setting value or 5 mA (I
or 25 mA (I = 5 A), (f
rated rated
1 % of the setting value or 5 mA (I
or 25 mA (I = 5 A), (f
rated rated
3 % of the setting value or 20 mA (I
or 100 mA (I = 5 A), (f
rated rated
4 % of the setting value or 20 mA (I
or 100 mA (I = 5 A), (f
rated rated
5 % of the reference (calculated) value
+2 % current tolerance or 30 ms
5 % of the reference (calculated) value
+2 % current tolerance or 30 ms
< 5 %
Approx. 10 ms
SIPROTEC 5, Paralleling Device, Manual
C53000-H5040-C071-1, Edition 05.2018
= 1 A)
rated
± 10 %)
= 1 A)
rated
± 10 %)
= 1 A)
rated
± 10 %)
= 1 A)
rated
± 10 %)