Siemens SIPROTEC 7SD80 Manual page 88

Functions
2.4 Backup Overcurrent
Pickup Logic and Tripping Logic
The pickup signals of the individual phases (or ground) and of the individual elements are interlinked in such a
way that both the phase information and the element which has picked up are indicated (Table 2-1).
Table 2-2 Pickup signals of the single phases
Internal indication
67-1 PU A
67-2 PU A
67-TOC PU A
67-1 PU B
67-2 PU B
67-TOC PU B
67-1 PU C
67-2 PU C
67-TOC PU C
67-1 PU N
67-2 PU N
67-TOC PU N
67-1 PU A
67-1 PU B
67-1 PU C
67-1 PU N
67-2 PU A
67-2 PU B
67-2 PU C
67-2 PU N
67-TOC PU A
67-TOC PU B
67-TOC PU C
67-TOC PU N
(All pickups)
The trip is signaled specifically for each element, e.g. „67(N)-B2 TRIP".
Behavior during Measuring Voltage Failure
An element-specific parameter, e.g. 67(N)-B1 on FFM allows you to define how the directional overcurrent
protection acts when the measuring voltage fails. The overcurrent protection then works either Non-
Directional or it is .
88
Display
2-30
2-31
2-30
2-31
2-30
2-31
2-30
2-31
2-30
2-30
„67(N)-B2 PICKUP"
2-30
2-30
„67(N)-B1 PICKUP"
2-31
2-31
„67(N)-TOC PICK."
2-31
2-31
Output indication
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
No.
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