Siemens siprotec 7SA6 User Manual

Functions
6-302 7SA6 Manual
C53000-G1176-C156-2
Figure 6-155 Breaker tripping alarm suppression — sequence examples
Trip Dependent
Messages
Thelatchingoffaultmessages,allocatedtothedeviceLEDsandthestorageofspon-
taneous messages after tripping may be made dependant on whether the device has
issued a trip command. This information is then not output if during a system distur-
bance one or more protection functions have picked up, but no tripping by the 7SA6
resulted because the fault was cleared by a different device (e.g. on another line). In
this manner, these messages are restricted to faults occurring on the protected feeder
(“no trip – no flag”).
Figure 6-156 shows the logic diagram of this function.
Figure 6-156 Logic diagram of the trip dependent messages
Switching
Statistics
The number of trips initiated by the device 7SA6 are counted. If the device is capable
of single-pole tripping, a separate counter for each circuit breaker pole is provided.
Protection
pick-up
Protection
trip
Auto-reclosure
(AR)
CBOperation
Detector
Alarm: “Breaker
Tripping”
Manual trip
(as required)
Manual Close via
binary input
“>Manual Close”
CB Pole
„CB Alarm
Supp“
AR dead time
Fault inception
Manual opening Final trip of protection function
&
0610
with PICKUP
with TRIP
FltDisp.LED/LCD
Relay TRIP
„1“
Relay Drop Out
Reset LED and Spontaneous alarms

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English