Siemens SIPROTEC 7SK80 - Pickup Logic and Tripping Logic

Functions
2.2 Overcurrent Protection 50, 51, 50N, 51N
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A4, Release date 08.2010
67
2.2.7 Pickup Logic and Tripping Logic
The pickup annunciations of the individual phases (or Ground) and the individual elements are combined with
each other in such a way that the phase information and the Element that has picked up are issued.
Table 2-3 Pickup annunciations of the overcurrent protection
In the trip signals, the Element which initiated the tripping is also indicated.
Internal Annunciation Figure Output Annunciation FNo.
50-3 A PU
50-2 A PU
50-1 A PU
51 A PU
2-6
2-8
2-12
„50/51 Ph A PU“ 1762
50-3 B PU
50-2 B PU
50-1 B PU
51 B PU
2-6
2-8
2-12
„50/51 Ph B PU“ 1763
50-3 C PU
50-2 C PU
50-1 C PU
51C PU
2-6
2-8
2-12
„50/51 Ph C PU“ 1764
50 N-3 PU
50 N-2 PU
50 N-1 PU
51N PU
2-7
2-10
2-13
„50N/51NPickedup“ 1765
50-3 A PU
50-3 B PU
50-3 C PU
„50-3 picked up“ 1767
50N-3 PU „50N-3 picked up“ 1768
50-2 A PU
50-2 B PU
50-2 C PU
2-6
2-6
2-6
2-7
„50-2 picked up“ 1800
50N-2 PU 2-7 „50N-2 picked up“ 1831
50-1 A PU
50-1 B PU
50-1 C PU
2-8
2-8
2-8
2-7
„50-1 picked up“ 1810
50N-1 PU 2-7 „50N-1 picked up“ 1834
51 A PU
51 B PU
51 C PU
2-12
2-12
2-12
„51 picked up“ 1820
51N PU 2-13 „51N picked up“ 1837
(All pickups) „50(N)/51(N) PU“ 1761