Siemens SIPROTEC 5 6MU85 - Page 38

Up to 50th harmonic, f
rated
= 50 Hz 2 % of the setting value or 10 mA (I
rated
= 1 A)
or 50 mA (I
rated
= 5 A), (f
rated
± 10 %)
Up to 50th harmonic, f
rated
= 60 Hz 3 % of the setting value or 20 mA (I
rated
= 1 A)
or 100 mA (I
rated
= 5 A), (f
rated
± 10 %)
Currents, method of measurement = RMS value
with filter for the gain of harmonics (including compensation of the amplitude attenuation
40
(33 % harmonics, in relation to the fundamental component)
Up to 30 harmonic 1.5 % of the setting value or 10 mA (I
rated
= 1 A)
or 50 mA (I
rated
= 5 A), (f
rated
± 10 %)
41
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), (f
rated
± 10 %)
42
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), (f
rated
± 10 %)
43
Operate time for 2 ≤ I/I threshold value ≤ 20 5 % of the reference (calculated) value
+2 % current tolerance or 30 ms
Dropout time for I/I threshold value ≤ 0.90 5 % of the reference (calculated) value
+2 % current tolerance or 30 ms
Time delays 1 % of the setting value or 10 ms
Influencing Variables for Thresholds
Transient excess pickup in method of measurement =
fundamental component, for τ > 100 ms (with
complete unbalance)
< 5 %
40
In case that the filter response exactly matches the user-defined gain factors
41
In case that the user-defined gain factor is set below 3. The tolerance increases, if the gain factor is larger.
42
In case that the user-defined gain factor is set below 7. The tolerance increases, if the gain factor is larger.
43
In case that the user-defined gain factor is set below 7. The tolerance increases, if the gain factor is larger.
Technical Data
12.6 Overcurrent Protection, Phases
SIPROTEC 5, Merging Unit 6MU85, Manual 815
C53000-G5040-C074-1, Edition 01.2020