Siemens SIPROTEC easy 7SJ45 User Manual

Manual 7SJ45 Technical Data
C53000-K1174-C001-7 78
Dropout / pickup ratio
Tolerances
Definite time (DT O/C 50/51)
Inversetime(IEC51orANSI51)
Measured value deviations due to various influences
Dropout/pickup ratio approx. 0.95 for definite time protection
(DT O/C 50/51)
approx. 0.91 for inverse-time protection
(IEC 51 or ANSI 51)
Pickup current I>, I>>, IE> 5 % of the setting value, or 5 % of the
rated value (for thresholds < 1I
N
)
Delay times T 1 % or 30 ms
Pick-up thresholds 5 % of the setting value, or 5 % of the
rated value (for thresholds < 1I
N
)
Time behavior for 2 ≤ I/I
P
≤ 20 5 % or 50 ms
Frequency in range
0.95 < f/f
N
< 1.05: < 2,5%
Frequency in range
0.9 < f/f
N
<1.1: <10%
Harmonics:
up to 10% 3rd and 5th harmonic: < 1%
Direct components: < 5%
Temperature in range -5°C to
70°C < 0.5 % / 10 K

Siemens SIPROTEC easy 7SJ45 Specifications

General

Brand	Siemens
Model	SIPROTEC easy 7SJ45
Category	Protection Device
Language	English