Siemens SIPROTEC easy 7SJ45 Handbuch Seite 78

Manual 7SJ45
Dropout / pickup ratio
Dropout/pickup ratio
Tolerances
Definite time (DT O/C 50/51)
Pickup current I>, I>>, IE>
Delay times T
Inverse time (IEC 51 or ANSI 51)
Pick-up thresholds
Time behavior for 2 ≤ I/I ≤ 20
P
C53000-K1174-C001-7
approx. 0.95 for definite time protection
(DT O/C 50/51)
approx. 0.91 for inverse-time protection
(IEC 51 or ANSI 51)
5 % of the setting value, or 5 % of the
rated value (for thresholds < 1I )
N
1 % or 30 ms
5 % of the setting value, or 5 % of the
rated value (for thresholds < 1I )
N
5 % or 50 ms
Measured value deviations due to various influences
Frequency in range
0.95 < f/f < 1.05:
N
Frequency in range
0.9 < f/f < 1.1:
N
Harmonics:
up to 10% 3rd and 5th harmonic:
Direct components:
Temperature in range -5°C to
70°C
Technical Data
< 2,5%
< 10%
< 1%
< 5%
< 0.5 % / 10 K
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