Functions
2.2 Overcurrent Protection 50, 51, 50N, 51N
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
80
2.2.8
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
„50/51 Ph A PU“
1762
50-3 B PU
50-2 B PU
50-1 B PU
51 B PU
„50/51 Ph B PU“
1763
50-3 C PU
50-2 C PU
50-1 C PU
51 B PU
„50/51 Ph C PU“
1764
50N-3 PU
50N-2 PU
50N-1 PU
51N PU
„50N/51NPickedup“
1765
50-3 A PU
50-3 B PU
50-3 C PU
50N-3 PU
„50-3 picked up“
1767
50-2 A PU
50-2 B PU
50-2 C PU
50N-2 PU
„50-2 picked up“
1800
50-1 A PU
50-1 B PU
50-1 C PU
50N-1 PU
„50-1 picked up“
1810
51 A PU
51 B PU
51 C PU
51N PU
(also voltage-controlled /
voltage-restraint)
„51 picked up“
1820
(All pickups)
„50(N)/51(N) PU“
1761
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