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 %)
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
Influencing Variables for Thresholds
Transient excess pickup in method of measurement =
fundamental component, for τ > 100 ms (with
complete unbalance)
< 5 %
Operate Curves and Dropout-Time Characteristic Curves According to IEC
Extension of the operate time during operation with
transformer inrush-current detection
Approx. 10 ms
Technical Data
12.14 Overcurrent Protection, 1-Phase
1470 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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