/PERATING INSTRUCTIONS
6%
6
# ' #
#HECKING THE MEASURED VOLTAGE CIRCUITS
4HE PHASE SEQUENCES AND CONNECTION OF THE VOLT
AGES TO BE PARALLELED MUST BE CHECKED 4HE CHECKS
MAY BE CARRIED OUT IN DIFFERENT MANNERS DEPENDING
ON THE ASSIGNMENT OF THE VOLTAGE TRANSFORMERS
)F THE SYNCHRONIZE LOCATION HAS VOLTAGE TRANSFORMERS
TO BOTH SIDES OF THE CIRCUIT BREAKER &IGURE THE
VOLTAGE CHECKS CAN BE CARRIED OUT SIMPLY ON THESE
VOLTAGE TRANSFORMERS
5
5
'ENERATOR
A
B
&IGURE -EASURED VOLTAGES FOR SYNCHRONIZING
7ITH THE CIRCUIT BREAKER B OPEN THE VOLTAGE TRANS
FORMER ON THE BUS BAR SIDE IS POWERED BY THE NET
WORK CLOSE ISOLATOR A
4HE VOLTAGE IS READ OUT ON THE PARALLELING DEVICE IN
THE OPERATIONAL MEASURED VALUES UNDER ADDRESS
AS
5,,
AND COMPARED WITH THE ACTUAL VOLTA
GE .OTE THAT THE DISPLAYED MEASURED VOLTAGE 5 IS
INFLUENCED BY THE MATCHING FACTOR 55 TOO
4HE PHASE SEQUENCE IS SUBSEQUENTLY CHECKED )F
TWO PHASE TO PHASE VOLTAGES ARE CONNECTED ON
THE DEVICE THE PHASE ROTATION CAN ALSO BE READ OUT IN
THE OPERATIONAL MEASURED VALUES UNDER ADDRESS
AS
5 #,/#+7)3%
OR
5 #/5.4%2 #,/#+
4HE SECONDARY WIRING TO THE PARALLELING DEVICE IS ALSO
CHECKED IN THIS MANNER
/PEN BUS BAR ISOLATOR A
4HE GENERATOR VOLTAGE IN THE 6% IS READ OUT IN THE
OPERATIONAL MEASURED VALUES UNDER ADDRESS
AS
5,,
AFTER RUNNING UP THE GENERATOR AND
COMPARED WITH THE ACTUAL VOLTAGE
4HE PHASE SEQUENCE CHECK IS SUBSEQUENTLY CARRIED
OUT WITH THE GENERATOR VOLTAGE THE PHASE SEQUENCE
OF THE GENERATOR VOLTAGE MUST BE THE SAME AS THAT OF
THE NETWORK VOLTAGE )F TWO PHASE TO PHASE VOLT
AGES ARE CONNECTED ON THE DEVICE THE PHASE ROTA
TION CAN BE READ OUT IN THE OPERATIONAL MEASURED VAL
UES UNDER ADDRESS AS
5 #,/#+7)3%
OR
5
#/5.4%2 #,/#+
4HE SECONDARY WIRING TO THE PAR
ALLELING DEVICE IS CHECKED IN THIS MANNER
3UBSEQUENT CHECKING OF THE SECONDARY VOLTAGE CIR
CUITS IS CARRIED OUT IN THAT IDENTICAL VOLTAGES ARE
APPLIED TO THE TWO VOLTAGE TRANSFORMERS 4HE GENERA
TOR FEEDER MUST BE ISOLATED FROM THE BUS BAR 4HE
CIRCUIT BREAKER B IS CLOSED SO THAT THE TWO VOLTAGES
5 AND 5 ARE IDENTICAL
#ONVINCE YOURSELF USING THE OPERATIONAL MEASURED
VALUES OF THE 6% UNDER ADDRESS THAT WITHIN
THE MEASURED TOLERANCES
THE TWO VOLTAGES
5,,
AND
5,,
ARE THE
SAME
THE TWO FREQUENCIES
F
AND
F
ARE THE SAME
THE VOLTAGE DIFFERENCE
DELTA5
IS ZERO
THE FREQUENCY DIFFERENCE
DELTA&
IS ZERO
THE ANGLE DIFFERENCE
PHI
IS ZERO
4HE 6% CARRIES OUT A PHASE SEQUENCE CHECK IF
TWO PHASE TO PHASE VOLTAGES ARE CONNECTED TO IT
THE SAME PHASE SEQUENCE MUST BE INDICATED UNDER
ADDRESS FOR BOTH VOLTAGES
5
PHASE SEQUENCE EQUAL TO
5
PHASE SE
QUENCE
)N THE CASE OF SEVERAL PARALLELING LOCATIONS THE EX
AMINATION MUST BE CARRIED OUT FOR EACH LOCATION IF THE
VOLTAGES ALSO CHANGE TOGETHER WITH THE LOCATIONS
