Siemens 6MD85, Manual

Page: 566 / 1256

Closing Indication and Close Command
After the expiration of the dead time, the Automatic reclosing function will be in the closing state.
The closing state can depend on the following influences, see
Figure 7-45 :
•
through a synchrocheck if the circuit breaker was opened during the 3-pole dead time
•
Through the readiness of the circuit breaker signaled through the binary input
•
Through a binary input for delaying the close command (
>Delay close cmd.
)
The
Close cmd. indication
is a requirement for the assignment of the actual close command to the
circuit breaker.
The mentioned criteria must not be fulfilled directly after expiration of the dead time. If a dead-time prolonga-
tion is set, the mentioned criteria will be checked during the prolongation. With the release of the closing indi-
cation, the automatic reclosing function will switch to the reclaim time state.
[loeinsha-141111-01.tif, 1, en_US]
Figure 7-45 Cyclic Reclosing Function: Logic for the Closing Indication
7.2.4.14
Protection and Automation Functions
7.2 Automatic Reclosing Function
566 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017