Siemens SIPROTEC 4 7UT6 Series Manual page 437

Reset Curves with Disk Emulation according to ANSI
For illustrations of possible reset time characteristics see
The dropout times constants apply to (Ι
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
Figure 4-16
/Ι ) ≤ 0.90
2 2p
4.8 Unbalanced Load Protection
and Figure 4-17on the left-hand side.
Technical Data
437