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[lo-ip-stufe-amz-iec-20101108, 1, en_US]
Figure 2-28
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
Internal indication
50-2 PU A
50-1 PU A
50-3 PU A
51 PU A
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
Logic diagram of the 51 element (inverse time overcurrent protection) - Example for IEC char-
acteristic
Pickup signals of the single phases
Display
Figure 2-26
Output indication
5X-B Pickup ØA
Functions
2.4 Backup overcurrent
(Table
2-1).
No.
7162
75
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