Operate time for 2 ≤ I/I threshold value ≤ 20 5 % of the reference (calculated) value
+2 % current tolerance or 30 ms
Dropout time for 2 ≤ I/threshold value I ≤ 0.90 5 % of the reference (calculated) value
+2 % current tolerance or 30 ms
Influencing Variables for Threshold Values
Transient excess pickup in method of measurement =
fundamental component, for τ > 100 ms (with
complete unbalance)
< 5 %
Technical Data
11.16 Overcurrent Protection, Ground
SIPROTEC 5, Low-Impedance Busbar Protection, Manual 947
C53000-G5040-C019-C, Edition 04.2021
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