
Functions
2.2 Overcurrent Protection 50, 51, 50N, 51N
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
51
Figure 2-5
Logic diagram for 50N-2 high-set element
If parameter
MANUAL CLOSE
is set to
50N-2 instant.
or
50N-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 AR 50N-2 inst.