Siemens siprotec 7SA6 User Manual page 460

Functions
6-278
Prior to the command, with the internal automatic reclosure in the ready state, the
contact in open so that no signal from the circuit-breaker is forwarded. This is only the
case if the device is equipped with internal automatic reclosure and if this was taken
into consideration when configuring the protection functions (Section 5.1, address
).
Also when closing the breaker via the binary input "!0DQXDO &ORVH" (FNo ) or
via the integrated automatic reclosure the contact is interrupted so that no breaker
alarm can be sent.
Further optional closing commands which are not sent via the device cannot be taken
into consideration. Closing commands for control can be linked to the alarm
suppression via the user-defined logic functions (CFC).
Close Trip
CB
Figure 6-144 Breaker tripping alarm suppression
If the device issues a final trip command, the contact remains closed. This is the case,
during the reclaim time of the automatic reclosure cycle, when the automatic reclosure
is blocked or switched off or, due to other reasons is not ready for automatic reclosure
(e.g. tripping only occurred after the action time expired).
Figure 6-145 shows time diagrams for manual trip and close as well as for protection
tripping with an unsuccessful automatic reclosure.
(Signalling Circuit
L+
Voltage)
Operation
Detector
Alarm:
"Breaker tripping"
7SA6
FNo 563
&% $ODUP 6XSS
7SA6 Manual
C53000-G1176-C133-1