Siemens 7SC80 Manual page 548

Technical Data
4.15 Ground Fault Detection (Sensitive/Insensitive)
Dropout Time Curves with Disk Emulation acc. to. IEC
Acc. to IEC 60255-3 or BS 142, Section 3.5.2 (see also
The dropout time curves apply to (Ι/Ι
Pickup Threshold IEC
IEC without disk emulation
IEC with disk emulation
IEC Tolerances
Pickup/dropout thresholds Ι
Pickup time for 2 ≤ Ι/Ι
Dropout time forΙ/Ι
548
) ≤ 0.90
EEp
approx. 1.05 · setting value Ι
approx. 0.95 · pickup value
approx. 0.90 · setting value Ι
2 % of setting value or 10 mA for Ι
EEp
≤ 20 5 % of reference value + 2 % current tolerance, or 30 ms
EEp
5 % of reference value + 2 %, or 30 ms
≤ 0.90
EEp
Figure 4-1 and Figure 4-2)
for Ι /Ι ≥ 0.3; this corresponds to
EEp EEp N
EEp
= 1 A or 50 mA for Ι
N
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
= 5 A
N