Siemens 7VK512

/PERATING INSTRUCTIONS6+
6
#
' #

39.#(2  9%3 AND  /6%22)$%  ./ 3TART
SYNCHRONISM CHECK BY ENERGIZING THE BINARY START
TO MEASURE INPUT &.O  3YNC 3TART  4HE
SYNCHRO
CHECK FUNCTION MUST ISSUE THE RELEASE
COMMAND ANNUNCIATION
3YNC2ELEASE  &.O
 )F NOT CHECK AGAIN THE CONNECTIONS )F MEA
SUREMENT IS CARRIED OUT OVER A TRANSFORMER CHECK
ADDRESS  TOO THIS PARAMETER MATCHES THE CON
NECTION GROUP OF THE TRANSFORMER )F THE PARAMETERS
ARE CORRECT CHECK AND CORRECT THE POLARITY OF THE VOLT
AGE TRANSFORMER CONNECTIONS
3ET THE SYNCHRONISM CHECK FUNCTION TO THE DEAD
BUS CHECK PROGRAM IE ADDRESS  55 
9%3 AND  39.#(2  ./ 3WITCH VOLTAGE TRANS
FORMER MCB OF THE BUS
BAR VOLTAGE TO TRIPPED PO
SITION 3TART BY ENERGIZING THE BINARY START
TO MEA
SURE INPUT &.O 
3YNC 3TART  .O RELEASE
COMMAND OCCURS #LOSE VOLTAGE TRANSFORMER MCB
OF THE BUS
BAR VOLTAGE
/PEN CIRCUIT BREAKER 3ET THE SYNCHRONISM CHECK
FUNCTION TO THE DEAD
LINE CHECK PROGRAM IE AD
DRESS  55  9%3 AND  55 
./ 3TART BY ENERGIZING THE BINARY START
TO MEA
SURE INPUT &.O 
3YNC 3TART  4HE SYN
CHRO
CHECK FUNCTION MUST ISSUE THE RELEASE COM
MAND ANNUNCIATION
3YNC2ELEASE  &.O  )F
NOT CHECK AGAIN CAREFULLY ALL CONNECTIONS AND PA
RAMETERS RELATING TO THE SYNCHRONISM AND VOLTAGE
CHECK FUNCTION ACCORDING TO 3ECTION 
3WITCH VOLTAGE TRANSFORMER MCB OF THE FEEDER VOLT
AGE TO TRIPPED POSITION 3TART BY ENERGIZING THE
BINARY START
TO MEASURE INPUT &.O  3YNC
3TART
 .O RELEASE COMMAND OCCURS #LOSE VOLT
AGE TRANSFORMER MCB OF THE FEEDER VOLTAGE
2E
CHECK AND RE ADJUST ADDRESSES  TO 
IN CASE THEY WERE ALTERED FOR THESE TESTS
 -EASURING THE CIRCUIT BREAKER
CLOSING TIME
)F ASYNCHRONOUS SWITCHING IS TO BE ALLOWED THE CIRCUIT
BREAKER CLOSING TIME IS MEASURED AND SET CORRECTLY
IN ADDRESS  SEE ALSO 3ECTION  ! SUITABLE
ARRANGEMENT IS SHOWN IN &IGURE 
4HE TIME METER IS SET TO THE  S RANGE AND TO A RESOLU
TION OF  MS #LOSE THE CIRCUIT BREAKER MANUALLY THE
TIME METER IS STARTED AT THE SAME TIME 4HE VOLTAGE
5 APPEARS WHEN THE POLES OF THE CIRCUIT BREAKERS
ARE CLOSED THE TIME METER IS THEN STOPPED 4HE TIME
INDICATED ON THE METER IS THE CIRCUIT BREAKER CLOSING
TIME
4HE EXPERIMENT MUST BE REPEATED IF THE TIME METER
DOES NOT STOP BECAUSE OF AN UNFAVOURABLE CLOSING
INSTANT

Õ
3TOP
4IME
METER
3TART
5
5
"US BAR
&EEDER
&IGURE  -EASURING THE CIRCUIT BREAKER CLOSING TIME