Siemens siprotec 7SA522 User Manual

Functions
6-2417SA522 Manual
C53000-G1176-C119-2
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
7SA522
Close
CB
&%$ODUP6XSS
FNo 563
Trip
L+
(Signalling Circuit
Voltage)
Alarm:
„Breaker tripping“
Operation
Detector
Pick-up
Trip of Pro-
tection
Function
Automat.
reclosure
(AR)
CB Opera-
tion De-
tector
Alarm:
„Breaker Trip-
ping“
M
anua
l
Trip
(as required)
Manual Closing via
Binary Input
„>Manual Close“
CB Pole
„&%$ODUP6XSS“
AR dead time
Short-circuit
Manual opening Final trip of protection function

Siemens siprotec 7SA522 Specifications

General

Brand	Siemens
Model	siprotec 7SA522
Category	Protection Device
Language	English