Siemens SIPROTEC 4 7SJ61 User Manual

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
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 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 automatic reclosure
Initiating time overcurrent
protection
Start sens. ground fault Start other
50-1 50Ns-1 Negative Sequence Protection 46
50N-1 50Ns-2 BINARY INPUT
50-2 51Ns
50N-2
50-3
50N-3
51p
51NEp
On initiation, the automatic reclosure function is informed that a trip command was issued and the respective
reclosing program is now being executed.
Functions
2.11 Automatic Reclosing System 79
148 SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016

Siemens SIPROTEC 4 7SJ61 Specifications

General

Brand	Siemens
Model	SIPROTEC 4 7SJ61
Category	Relays
Language	English