Siemens SIPROTEC 7SJ80

[zusam-wirk-steuer-synchro-fkt-061115, 1, en_US]
Figure 2-114 Interaction of control and synchrocheck function
With Automatic Reclosing
The automatic reclosing (AR) function can also interact with the synchrocheck function. They are linked via the
device control. The selection is made via configuration in the automatic reclosing and synchrocheck function.
The AR parameters (7138 Internal SYNC) determine whether working with SYNC function group 1 or - in
the case of external synchronization - without SYNC function group. The switch to be used is defined in func-
tion group 1. The switchgear component indicated in the AR parameters (7137 Cmd.via control) and the
SYNC function group must be identical. If no SYNC function group is entered in the AR parameters, the close
command of the AR function is carried out asynchronously via the switchgear component indicated in the AR
parameters. Equally, the CLOSE command
79 Close (message 2851) allows only asynchronous switching. If,
for example, circuit breaker Q0 is configured as object to be switched synchronously, a CLOSE command of
the AR function will address this breaker and assign it a CLOSE command which will be processed by the
control. As this breaker requires synchronization, the control launches the synchrocheck function and awaits
release. If the configured conditions of the SYNC function group are fulfilled, the release is granted and the
control issues the CLOSE command.
[anbind-awe-an-synchro-fkt-061115, 1, en_US]
Figure 2-115 Connection of the automatic reclosing function to the synchrocheck function
Functions
2.20 Synchrocheck
266 SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017