Siemens 7SJ82 Manual page 1499

Siprotec 5 overcurrent protection
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Dropout time
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
Negative-sequence current I
Warning delay
Time for 2 ≤ I
/I
2
Influencing Variables for the Thresholds
Harmonics
– Up to 10 % 3rd harmonic
– Up to 10 % 5th harmonic
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
rated
2
≤ 20
2Perm
12.24 Unbalanced-Load Protection
Approx. 50 ms or better
According to specified tolerances
Slightly expanded tolerances
Inactive
Approx. 3 % of setting value or 0.030 A at I
Approx. 3 % of setting value or 0.150 A at I
1 % of the setting value or 10 ms
5 % of reference (calculated) value or 100 ms ±
(1 % current tolerance or 10 mA) at I
5 % of reference (calculated) value or 100 ms ±
(1 % current tolerance or 50 mA) at I
≤ 1 %
≤ 1 %
Technical Data
= 1 A
rated
= 5 A
rated
= 1 A
rated
= 5 A
rated
1499

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