/PERATING INSTRUCTIONS
3$
6
# ' #
0UTTING THE RELAY INTO OPERATION
!LL SETTING VALUES SHOULD BE CHECKED AGAIN IN CASE
THEY WERE ALTERED DURING THE TESTS 0ARTICULARLY CHECK
THAT ALL DESIRED PROTECTION FUNCTIONS HAVE BEEN PRO
GRAMMED IN THE CONFIGURATION PARAMETERS ADDRESS
BLOCKS AND REFER TO 3ECTION AND ALL DE
SIRED PROTECTION FUNCTIONS HAVE BEEN SWITCHED
/.
4HE COUNTERS FOR CIRCUIT BREAKER OPERATION STATISTICS
SHOULD BE ERASED ADDRESS BLOCK REFER TO 3ECTION
0USH THE KEY
-3
ON THE FRONT 4HE DISPLAY SHOWS
THE BEGINNING OF THE ANNUNCIATION BLOCKS 4HUS IT IS
POSSIBLE THAT THE MEASURED VALUES FOR THE QUIESCENT
STATE OF THE RELAY CAN BE DISPLAYED SEE BELOW
4HESE VALUES HAD BEEN CHOSEN DURING CONFIGURATION
REFER TO 3ECTION UNDER THE ADDRESSES
AND
3TORED INDICATIONS ON THE FRONT PLATE SHOULD BE RESET
BY PRESSING THE PUSHBUTTON 2%3%4 ,%$ ON THE
FRONT SO THAT FROM THEN ON ONLY REAL FAULTS ARE INDI
CATED &ROM THAT MOMENT THE MEASURED VALUES OF
THE QUIESCENT STATE ARE DISPLAYED $URING PUSHING
THE 2%3%4 BUTTON THE ,%$S ON THE FRONT WILL LIGHT UP
EXCEPT THE "LOCKED ,%$ THUS A ,%$ TEST IS PER
FORMED AT THE SAME TIME
#HECK THAT ALL MODULES ARE PROPERLY INSERTED 4HE
GREEN ,%$ MUST BE ON ON THE FRONT THE RED ,%$ MUST
NOT BE ON
#LOSE HOUSING COVER
!LL TERMINAL SCREWS
EVEN THOSE NOT IN USE
MUST
BE TIGHTENED
)F A TEST SWITCH IS AVAILABLE THEN THIS MUST BE IN THE
OPERATING POSITION
4HE LINE DIFFERENTIAL PROTECTION RELAY IS NOW READY FOR
OPERATION
Summary of Contents for 7SD502
Page 148: ... PPENDIX 3 6 PPENDIX ENERAL DIAGRAMS ONNECTION DIAGRAMS 4ABLES ...
Page 176: ... 3 6 ...
