
Technical Data
4.3 Inverse-Time Overcurrent Protection 51(N)
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
326
Tolerances
Influencing Variables for Pickup and Dropout
Pickup/dropout thresholds
I
p
,
I
Ep
2% of setting value or 10 mA for
I
Nom
= 1 A, or 50 mA for
I
Nom
= 5 A
Pickup time for 2
≤
I
/
I
p
≤
20
5 % of reference (calculated) value + 2 % current tolerance,
respectively 30 ms
Dropout time for
I
/
I
p
≤
0.90
5 % of reference (setpoint) value + 2 % or 30 ms
Power supply direct voltage in range 0.8
≤
V
PS
/V
PSNom
≤
1.15
1 %
Temperature in range 23.00 °F (-5 °C)
≤
Θ
amb
≤
131.00 °F (55 °C)
0.5 %/10 K
Frequency in range 0.95
≤
f/f
Nom
≤
1.05
1 %
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
1%
1%
Transient overreaction during fundamental harmonic measuring procedure for
τ
> 100 ms
(with full displacement)
<5 %
Содержание SIPROTEC 7SJ61
Страница 368: ...Technical Data 4 22 Dimensions SIPROTEC 7SJ61 Manual C53000 G1140 C210 1 Release date 02 2008 368 ...
Страница 436: ...Appendix A 11 Measured Values SIPROTEC 7SJ61 Manual C53000 G1140 C210 1 Release date 02 2008 436 ...
Страница 438: ...Literature SIPROTEC 7SJ61 Manual C53000 G1140 C210 1 Release date 02 2008 438 ...
Страница 450: ...Glossary SIPROTEC 7SJ61 Manual C53000 G1140 C210 1 Release date 02 2008 450 ...
Страница 454: ...Index SIPROTEC 7SJ61 Manual C53000 G1140 C210 1 Release date 02 2008 454 ...