/PERATING INSTRUCTIONS
6+
6
# ' #
)F THE SYNCHRONISM AND VOLTAGE CHECK FUNCTION IS
USED NOTE THAT THE FEEDER VOLTAGE IS DESIGNATED WITH
5 IT IS THE REFERENCE VOLTAGE FOR THE DEVICE FUNC
TIONS WHICH OPERATE WITH MEASURED VOLTAGES 4HE
BUS BAR VOLTAGE IS DESIGNATED 5
)F A POWER TRANSFORMER IS INSTALLED BETWEEN THE BUS
BAR AND THE LOCATION OF THE FEEDER VOLTAGE TRANSFORM
ERS THEN THE PHASE DISPLACEMENT ACCORDING TO THE
POWER TRANSFORMER CONNECTION GROUP MUST BE COM
PENSATED 4HIS CAN BE DONE USING THE PARAMETER AD
DRESS
4HE SECONDARY RATED VOLTAGES OF THE VOLTAGE TRANS
FORMERS MUST BE EQUAL !DDITIONALLY THE PRIMARY
RATED VOLTAGES OF THE FEEDER VOLTAGE TRANSFORMERS ON
THE ONE HAND AND THE BUS BAR VOLTAGE TRANSFORM
ERS ON THE OTHER HAND MUST RELATE TO THE TRANSFOR
MATION RATIO OF THE POWER TRANSFORMER
)F NO PHASE SHIFTING ELEMENT ARE INSTALLED BETWEEN
BUS BAR AN FEEDER VOLTAGES LEAVE ADDRESS ON
THE PRESET VALUE /THERWISE IT MUST BE NOTED THAT
THE PHASE DISPLACEMENT COUNTS POSITIVE FROM THE
FEEDER CIRCUIT TO THE BUS BAR CIRCUIT
%XAMPLE
"US BAR
K6 PRIMARY
6 SECONDARY
&EEDER
K6 PRIMARY
6 SECONDARY
! POWER TRANSFORMER SHOULD BE INSTALLED BETWEEN
BUS BAR VOLTAGE TRANSFORMERS AND FEEDER VOLTAGE
TRANSFORMERS
0OWER TRANSFORMER
K6 K6
CONNECTION GROUP $YN
4HE CONNECTION GROUP OF THE POWER TRANSFORMER IS
DEFINED FROM THE UPPER VOLTAGE SIDE TO THE LOWER VOLT
AGE SIDE 4HE FEEDER VOLTAGE TRANSFORMERS WHICH
ARE THE REFERENCE VOLTAGES FOR THE PROTECTION RELAY
ARE INSTALLED ON THE LOWER VOLTAGE SIDE OF THE POWER
TRANSFORMER 4HUS THE PHASE DISPLACEMENT ACCORD
ING TO THE CONNECTION GROUP NUMERAL IE
}
^
MUST BE ENTERED AS NEGATIVE VALUE
3ETTING WILL BE ADDRESS
0() 5 5
^
5
5 ! . ' ,
^
0HASE DISPLACEMENT BETWEEN 5 FEEDER VOLTAGE AND
5 BUS BAR VOLTAGE FOR SYNCHRONISM CHECK
3MALLEST SETTING VALUE
^
,ARGEST SETTING VALUE
^
4HE CLOSING TIME OF THE CIRCUIT BREAKER ADDRESS
IS NECESSARY IF THE SYNCHRO CHECK FUNCTION OF THE
RELAY IS USED ALSO FOR ASYNCHRONOUS SWITCHING )N THIS
CASE THE RELAY CALCULATES THE IDEAL CLOSING INSTANT
SUCH THAT THE TWO VOLTAGES BUS BAR AND FEEDER ARE
IN SYNCHRONISM AT THE INSTANT WHEN THE BREAKER
POLES CONTACT EACH OTHER
5NDER ADDRESS THE MINIMUM CLOSE COMMAND
DURATION CAN BE SET 4HIS TIME IS THEN VALID FOR ALL
FUNCTIONS OF THE DEVICE WHICH CAN CLOSE THE CIRCUIT
BREAKER )T MUST BE LONG ENOUGH TO ENSURE RELIABLE
CLOSURE OF THE CIRCUIT BREAKER !N EXCESSIVELY LONG
TIME DOES NOT PRESENT ANY DANGER SINCE THE CLOSING
COMMAND WILL BE INTERRUPTED AT ONCE ON OCCURRENCE
OF A RENEWED TRIP COMMAND
4
# "
# , / 3 %
S
#IRCUIT BREAKER
CLOSING
TIME RELEVANT ONLY IN CASE
ASYNCHRONOUS SWITCHING IS USED IN CONNECTION WITH
SYNCHRO CHECK
3MALLEST SETTING VALUE
,ARGEST SETTING VALUE
S
S
4
# , / 3 %
S
-AXIMUM DURATION OF
CLOSE
COMMAND
3MALLEST SETTING VALUE
,ARGEST SETTING VALUE
S
S
