Siemens SIPROTEC 7SJ531 - Page 83

-ETHOD OF OPERATION3*
6

#
' #
3*
3*
4RIP CIRCUIT
FAILURE
,

,
") 
") 
42
#,/3%
42)0
42 4RIP RELAY OF 3*
OR ANY OTHER PROTECTION RELAY
") "INARY INPUT OF 3*
4# #IRCUIT BREAKER TRIP COIL
!UX #" AUXILIARY CONTACTS
5
CV
#ONTROL VOLTAGE
.O 4RIP RELAY
 OPEN
 OPEN
 CLOSED
 CLOSED
#" POSITION
#,/3%$
/0%.
#,/3%$
/0%.
")  ") 
(,
((
,,
,(
")  ,
")  ,
&AILURE
4RIP CIRCUIT
( (
&IGURE  0RINCIPLE OF TRIP CIRCUIT SUPERVISION WITH TWO BINARY INPUTS
N
N NUMBER OF REPEATED STATUS CHECKS  
#" AUXILIARY CONTACTS ILLUSTRATED
FOR CLOSED BREAKER

5
CV
!UX
!UX
4#
#"
OR ANY OTHER
PROTECTION RELAY
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