Functions
2.2 Overcurrent Protection 50, 51, 50N, 51N
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
71
Figure 2-10 Logic diagram of the inverse-time overcurrent protection element for phases
If parameter MANUAL CLOSE is set to 51 instant. and manual close detection applies, the trip is initiated
as soon as the pickup conditions arrive, even if the element is blocked via a binary input. The same applies to
79AR 51 inst.
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