Siemens siprotec 7SA522 User Manual page 389

Distance protection
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Manual
Trip
(as required)
Manual Closing via
Binary Input
„>Manual Close"
Pick-up
Trip of Pro-
tection
Function
Automat.
reclosure
(AR)
CB Pole
CB Opera-
tion De-
tector
„&% $ODUP 6XSS"
Alarm:
„Breaker Trip-
ping"
Manual opening
7SA522 Manual
C53000-G1176-C119-2
Close
Trip
CB
Figure 6-128 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 occured after the action time expired).
Figure 6-129 shows time diagrams for manual trip and close as well as for short-circuit
tripping with a single, failed automatic reclosure cycle.
Figure 6-129 Breaker Tripping Alarm Suppression — Sequence Examples
(Signalling Circuit
L+
Voltage)
Operation
Detector
Alarm:
„Breaker tripping"
Short-circuit
AR dead time
Functions
7SA522
FNo 563
&% $ODUP 6XSS
Final trip of protection function
6-241

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