Siemens 7VK512

/PERATING INSTRUCTIONS6+
6

#
' #
 #OMMISSIONING USING PRIMARY TESTS
!LL SECONDARY TESTING SETS AND EQUIPMENT MUST BE
REMOVED 2ECONNECT CURRENT AND VOLTAGE TRANSFORM
ERS &OR TESTING WITH PRIMARY VALUES THE LINE MUST BE
ENERGIZED
0RIMARY TESTS SHALL BE PERFORMED ONLY BY
QUALIFIED PERSONNEL WHICH IS TRAINED IN
COMMISSIONING OF PROTECTION SYSTEMS AND
FAMILIAR WITH THE OPERATION OF THE PROTECTED
OBJECT AS WELL AS THE RULES AND REGULATIONS
SWITCHING EARTHING ETC

7ARNING
 -EASURED VOLTAGE CHECKS
#ONNECTIONS TO THE VOLTAGE TRANSFORMERS ARE
CHECKED WITH PRIMARY VALUES /PEN THE LINE ISOLATOR
AND CLOSE THE CIRCUIT BREAKER AS TO &IGURE  4HUS
BOTH VOLTAGE TRANSFORMER SETS RECEIVE THE SAME VOLT
AGE #LOSE THE VOLTAGE TRANSFORMER SECONDARY
MCBS OF BUS
BAR AND FEEDER VOLTAGE
4HE VOLTAGES CAN BE READ OFF ON THE DISPLAY IN THE
FRONT OR VIA THE OPERATING INTERFACE IN BLOCK  AND
COMPARED WITH THE ACTUAL MEASURED VALUES 4HE
SECONDARY VOLTAGES ADDRESSES  AND 
MUST BE EQUAL 4HE VALUES FOR 5 ADDRESS  F
ADDRESS  AND  ADDRESS  MUST BE AL
MOST ZERO ! DEVIATION OF THE LAST INDICATED DIGIT CAN
BE TOLERATED
)F HIGHER DEVIATIONS ARE RECOGNIZED OR EVEN A LARGE
PHASE ANGLE IS INDICATED CHECK AT FIRST THE SETTING OF
ADDRESS  AND CORRECT IF NECESSARY &URTHERMORE
AN ERROR CAN BE PRESENT IN THE SECONDARY WIRING OF
THE VOLTAGE TRANSFORMER CIRCUITS #HECK AND CORRECT
THE CONNECTIONS 2EPEAT MEASUREMENT
2EAD OUT THE PRIMARY VOLTAGE VALUES ADDRESSES
 AND  AND COMPARE WITH THE ACTUAL VALUES
4HESE VALUES ARE RELEVANT ONLY FOR OPERATIONAL MEA
SUREMENT )F DEVIATIONS OCCUR ADDRESSES  AND
 SHOULD BE CHECKED REFER TO 3ECTION 
 #HECKING THE VOLTAGE POLARITY
FOR SYNCHRONISM CHECK
4HIS CHECK SHOULD VERIFY THE CORRECT POLARITY OF THE
VOLTAGE TRANSFORMER CONNECTIONS FOR THE SYNCHRO
NISM AND VOLTAGE CHECK FUNCTION 4HE PROTECTIVE
MCBS OF BOTH VOLTAGE TRANSFORMER SECONDARY CIR
CUITS MUST BE CLOSED
/PEN THE CIRCUIT BREAKER
!T FIRST SET THE SYNCHRO
CHECK FUNCTION TO THE OVER
RIDE PROGRAM IE ADDRESS  /6%22)$%  9%3
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2E
LEASE
 &.O  )F NOT CHECK ALL RELEVANT PARAME
TERS ADDRESS  3ECTION  AND ADDRESS 
3ECTION 
.EXT OPEN THE LINE ISOLATOR AND CLOSE THE CIRCUIT
BREAKER AS TO &IGURE  4HUS BOTH VOLTAGE TRANS
FORMER SETS RECEIVE THE SAME VOLTAGE
5
5
,INE
&IGURE  -EASURED VOLTAGES FOR SYNCHRONISM
CHECK
3ET THE SYNCHRONISM AND VOLTAGE CHECK FUNCTION TO
THE SYNCHRO
CHECK PROGRAM IE ADDRESS 