-ETHOD OF OPERATION
3*
6
# ' #
3WITCH OVER OF THE PHASE
ROTATION
4HE RELAY PROVIDES THE FACILITY TO CHANGE THE PHASE
ROTATION VIA ENERGIZATION OF A BINARY INPUT
NEGA
TIVE SEQ
&.O
4HIS ALLOWS TO USE ALL PRO
TECTION FUNCTIONS IN CASE THE PHASE ROTATION IS COUN
TER CLOCKWISE WITHOUT INTERCHANGING OF PHASES
7HEN THE PHASE ROTATION IS REVERSED THE RELAY MUST
BE INFORMED ABOUT THIS VIA THE BINARY INPUT /N ENER
GIZATION OF THIS INPUT THE PHASE QUANTITIES OF THE
PHASES , AND , ARE SWAPPED "UT THIS IS RELEVANT
ONLY FOR THE INTERNAL CALCULATION OF THE SYMMETRICAL
COMPONENTS THE PHASE DEDICATED ANNUNCIATIONS
FAULT RECORDINGS AND MEASURED VALUES ARE NOT AF
FECTED
0ROCESSING OF USER DEFINED
ANNUNCIATIONS
&OUR ANNUNCIATIONS ARE AVAILABLE WHICH CAN BE DE
FINED BY THE USER HIMSELF 3IGNALS AND MESSAGES OF
OTHER DEVICES WHICH HAVE NO INTERFACES 0# OR ,3!
INTERFACE CAN BE INCLUDED IN THE ANNUNCIATION PRO
CESSING OF THE DEVICE ,IKE THE INTERNAL ANNUNCI
ATIONS THEY CAN BE ALLOCATED TO SIGNAL RELAYS ,%$S
OR TRIP RELAYS OR TRANSMITTED TO THE FRONT DISPLAY A 0#
OR ,3! %XAMPLES ARE "UCHHOLZ PROTECTION OR TEM
PERATURE MONITOR OR RELAYS WITHOUT SERIAL INTERFACES
#IRCUIT BREAKER TRIP TEST
.UMERICAL PROTECTION CONTROL AND SUPERVISION DE
VICE 3* ALLOWS CHECKING OF THE TRIPPING CIRCUITS
AND THE CIRCUIT BREAKER BY A SIMPLE METHOD "Y
MEANS OF THE INCORPORATED AUTO RECLOSE FEATURE A
42)0 #,/3% TEST SEQUENCE IS POSSIBLE
! PRECONDITION FOR ANY TEST SEQUENCE IS THAT NO PRO
TECTION FUNCTION HAS PICKED UP )F THE CIRCUIT BREAKER
AUXILIARY CONTACTS ADVISE THE RELAY THROUGH A BINARY
INPUT OF THE CIRCUIT BREAKER POSITION THE TEST CYCLE
CAN ONLY BE STARTED WHEN THE CIRCUIT BREAKER IS
CLOSED
!DDITIONALLY FOR A 42)0 #,/3% CYCLE THE CONDI
TIONS FOR AN AUTO RECLOSE SEQUENCE MUST BE FULFILLED
CIRCUIT BREAKER READY AUTO RECLOSE NOT BLOCKED
)NITIATION OF THE TEST SEQUENCE CAN BE GIVEN FROM THE
KEYBOARD OR VIA THE FRONT OPERATOR INTERFACE
4HE TEST SEQUENCE IS MONITORED BY THE POSITION OF
THE BREAKER AS GIVEN BY ITS AUXILIARY CONTACT PRO
VIDED THE AUXILIARY CONTACT IS CONNECTED TO A BINARY
INPUT )F THE BREAKER DOES NOT RESPOND TO A COM
MAND THE TEST SEQUENCE WILL BE INTERRUPTED AND AN
APPROPRIATE INDICATION IS GIVEN 4HE SEQUENCE CAN
BE FOLLOWED ON THE INDICATOR PANEL OR A PERSONAL
COMPUTER
4HE 3* ALSO ALLOWS DIRECT CONTROL OF THE CIRCUIT
BREAKER BY MEANS OF SPECIFIC KEYS DEDICATED TO THE
CONTROL )N CORRESPONDENCE TO THE BLOCKING OF THE AU
TOMATIC RECLOSING FOR MANUAL CLOSING THERE IS ALSO A
BLOCKING FACILITY PROVIDED FOR A CLOSING COMMAND
CARRIED OUT BY THE CONTROL BE IT VIA PARAMETER OR VIA
BINARY INPUT !FTER AN OPENING COMMAND BY THE CON
TROL THE INTERNAL AUTOMATIC RECLOSING WILL NOT BE
STARTED UNDER ANY CONDITION
ONLY FOR MODEL 3*
J JJJJ
JJJJ
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