Siemens SIPROTEC 7UT63 series - Page 151

2.4 Time Overcurrent Protection for Phase and Residual Currents
151
7UT613/63x Manual
C53000-G1176-C160-2
Figures 2-65 and 2-66 show the logic diagrams for the high-set stages I>> and
3I0>>.
Figure 2-65 Logic diagram of the high-set stages I>> for phase currents (simplified)