Functions
2.14 Automatic Reclosing System 79
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
252
Figure 2-96 Timing diagram showing two unsuccessful reclosing shots
Initiation
Initiation of the automatic reclosing function can be caused by internal protection functions or externally via
binary inputs. The automatic reclosing system can be programmed in such manner that any of the elements of
Table 2-18 can initiate (Starts 79), not initiate (No influence), or block reclosing (Stops 79):
Table 2-18 Initiating automatic reclosure
On initiation, the automatic reclosure function is informed that a trip command was issued and the respective
reclosing program is now being executed.
The binary input messages 2715 „>Start 79 Gnd“ and 2716 „>Start 79 Ph“ for starting an automatic
reclosure program can also be activated via CFC (fast PLC task processing). Automatic reclosure can thus be
initiated via any messages (e.g. protective pickup) if address 7164 BINARY INPUT is set to Starts 79.
Non-directional start Directional start Start other
50-1 67-1 SENS. GROUND FLT (50Ns, 51Ns)
50N-1 67N-1 46
50-2 67-2 BINARY INPUT
50-3
50N-2 67N-2
50N-3
51 67-TOC
51N 67N-TOC
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