Siemens SIPROTEC 4 Manual page 58

Functions
2.2 Overcurrent Protection 50, 51, 50N, 51N
[7sj6x-hochstromst-i-fuer-ph-20061212, 1, en_US]
Figure 2-4
If parameter MANUAL CLOSE is set to 50-2 instant. or 50-3 instant. and manual close detection is
used, a pickup causes instantaneous tripping, even if the element is blocked via binary input.
The same applies to 79 AR 50-2 inst. or 79 AR 50-3 inst.
58
Logic diagram for 50-2 high-set element for phases
SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017