Siemens SIPROTEC 4 7SJ61 Manual page 148

Functions
2.11 Automatic Reclosing System 79
The following figure shows an example of a timing diagram showing for two unsuccessful reclosing shots,
with no additional reclosing of the circuit breaker.
The number of reclose commands initiated by the automatic reclosure function are counted. A statistical
counter is available for this purpose for the first and all subsequent reclosing commands.
[ablaufdiagramm-2-malige-wiedereinschaltung-erfolglos-260602-kn, 1, en_US]
Figure 2-59
Initiation
Initiation of the automatic reclosing function can be caused by internal protection functions or externally via
binary inputs. The automatic reclosing function can be programmed in such manner that any of the elements
of the following Table can initiate (Starts 79), not initiate (No influence), or block reclosing (Stops
79):
Table 2-10
Initiating time overcurrent
protection
50N-1
50N-2
50N-3
51NEp
On initiation, the automatic reclosure function is informed that a trip command was issued and the respective
reclosing program is now being executed.
148
Timing diagram showing two unsuccessful reclosing shots
Initiating automatic reclosure
Start sens. ground fault
50-1
50-2
50-3
51p
50Ns-1 Negative Sequence Protection 46
50Ns-2
51Ns
C53000-G1140-C210-6, Edition 05.2016
Start other
BINARY INPUT
SIPROTEC 4, 7SJ61, Manual