Siemens SIPROTEC 7SJ531 - Page 92

-ETHOD OF OPERATION3*
6
#
' #

 #LOSING OF THE CIRCUIT BREAKER
7HEN THE CIRCUIT BREAKER IS CLOSED ONTO A FAULTY LINE
UNDELAYED TRIPPING IS NORMALLY REQUIRED &OR THIS PUR
POSE THE
MANUAL CLOSE PARAMETERS ARE FORESEEN
DURING #,/3% CONTROL FOR THE REACTION OF THE RELAY )T
CAN BE SELECTED FOR THE OVERCURRENT TIME PROTECTION
AND FOR THE DIRECTIONAL OVERCURRENT TIME PROTECTION
WHETHER THE ) STAGES OR THE )DEFINITE TIME OR )
P
INVERSE TIME STAGES SHALL OPERATE IN THIS CASE IN
STANTANEOUSLY OR WITH THE PARAMETERIZED TIME DELAY
)F IT IS REQUIRED THAT IN PARALLEL TO THE CIRCUIT BREAKER
CONTROL BY THE RELAY 3* OPERATION SHALL ALSO BE
POSSIBLE BY MEANS OF A CONTROL
DISCREPANCY
SWITCH THE LATTER HAS TO BE CONNECTED WITH THE BINARY
INPUT FOR -!.5!,
#,/3).' TOGETHER WITH THE COR
RESPONDING MARSHALLING OF THE BINARY INPUT 4HE INTE
GRATED MANUAL
CLOSE LOGIC IN THE 3* DISTIN
GUISHES FOR A CLOSING COMMAND BETWEEN AN EXTERNAL
CONTROL COMMAND AN INTERNAL CONTROL COMMAND AND
AN AUTOMATIC RECLOSING BY THE INTERNAL !2 FUNCTION
4HE BINARY INPUT -!.5!,
#,/3).' CAN THUS BE
CONNECTED DIRECTLY TO THE CLOSING COIL
S CONTROL CIR
CUIT )F HOWEVER EXTERNAL CLOSING COMMANDS ARE
POSSIBLE WHICH SHALL NOT ACTIVATE THE MANUAL
CLOSE
FUNCTION EG AN EXTERNAL !2 RELAY THEN THE BINARY
INPUT -!.5!,
#,/3).' HAS TO BE ENERGIZED BY A
SEPARATE AUXILIARY CONTACT OF THE CONTROL
DISCREPAN
CY SWITCH
 4RIPPING OF THE CIRCUIT BREAKER
4RIPPING OF THE CIRCUIT BREAKER IS ALWAYS POSSIBLE
WHEN THE REQUIRED SWITCHING AUTHORIZATION EVENTU
ALLY BY CODEWORD INPUT IS GIVEN 4HE INTERNAL
!2
FUNCTION IS NOT ACTIVATED )F THERE IS AN EXTERNAL !2
RELAY IT WOULD BE STARTED AND WOULD RESULT IN DIRECT
RECLOSING OF THE CIRCUIT BREAKER )N ORDER TO AVOID THIS
ANY EXTERNAL AUTO
RECLOSING MUST BE BLOCKED VIA AN
INPUT &OR THIS PURPOSE THIS BLOCKING INPUT HAS TO BE
CONNECTED WITH AN ACCORDINGLY PARAMETERIZED ALARM
RELAY OF THE 3*
4HE FOLLOWING ABBREVIATIONS ARE POSSIBLE FOR THE ANNUNCIATION TEXTS EG
#" 1 2" /0 #,/3% 
$ESIGNATION 3ELECTION $ESCRIPTION
4YPE OF SWITCHING ELEMENT #" CIRCUIT BREAKER
PART  PROCESS OBJECT $# DISCONNECTOR
$ESIGNATION OF SWITCHING EL
1 ACC $). 
PART  PROCESS OBJECT 1 REFER ALSO TO &IGURE 
TO
1NN
3WITCHING SOURCE ," LOCAL BINARY INPUT
,$ LOCAL PERSONAL COMPUTER VIA $)'3)q
,+ LOCAL INTEGRATED OPERATION PANEL
2" REMOTE BINARY INPUT
2$ REMOTE VIA $)'3)q
2+ REMOTE VIA ,3!
-ODE /0 OPERATION CONTROL COMMAND
PART  CAUSE &" STATE FEEDBACK SIGNAL
2ESULT  POSITIVE EXPECTED
PART  CAUSE NEGATIVE NOHT EXPECTED
3WITCHING DIRECTION #,3 SWITCH ON CLOSE SWITCHING DEVICE
VALUE 420 SWITCH OFF TRIP SWITCHING DEVICE
4ABLE  !NNUNCIATIONS DURING SWITCHING AND THEIR MEANING
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