20
6.6 FOR FIXED MOUNTED BREAKERS ONLY:
REMOVE EMERGENCY OPERATING HANDLE FROM
ELECTRICALLY OPERATED BREAKERS. CLOSE BREAKER
COMPARTMENT DOOR. ENERGIZE ONLY BREAKER CONTROL
SOURCE(S) IF SEPARATE CONTROL POWER IS PROVIDED, OR MAIN
POWER SOURCE IF USED FOR CONTROL POWER AS WELL. FOR THE
LATTER, ISOLATE THE LOAD IF POSSIBLE. CLOSE AND OPEN BREAKER
SEVERAL TIMES. ENSURE THAT REMOTE CONTROL, PROTECTION,
MONITORING AND ANNUNCIATING CIRCUITS ARE FUNCTIONING AS
INTENDED. AFTER COMPLETION Of TEST OPERATIONS, BREAKER IS
READY FOR FULL SERVICE.
6.7 FOR DRAWOUT MOUNTED BREAKERS ONLY:
CHECK THE MAIN AND SECONDARY DRAWOUT CONTACTS TO
SEE THAT THEY ARE CLEAN AND FREE FROM FOREIGN MATERIAL.
PUT ELECTRICALLY OPERATED BREAKER, OR MANUALLY OPERATED
BREAKER WITH SHUNT TRIP COIL IN "TEST" POSITION. BEFORE
LOWERING THE DRAWOUT GATE ENSURE BREAKER CLOSING
SPRING IS DISCHARGED (REFER To 4.10 CLOSING SPRING DISCHARGE
AND DRY RUNS).
ENERGIZE BREAKER CONTROL SOURCE(S). BREAKER
COMPARTMENT DOOR MAY BE LEFT OPEN FOR BETTER
OBSERVANCE OF BREAKER OPERATION BUT BE AWARE THAT
CONTROL POWER IS CONNECTED AND CIRCUITS AND DEVICES ARE
ALIVE.
CLOSE AND OPEN BREAKER SEVERAL TIMES. ENSURE
THAT ALL MANUAL AND ELECTRICAL FEATURES ARE
FUNCTIONING PROPERLY.
ENSURE THAT REMOTE CONTROL, PROTECTION,
MONITORING AND ANNUNCIATING CIRCUITS REQUIRED TO BE
OPERATIONAL IN "TEST" POSITION ARE FUNCTIONING. CLOSE
BREAKER COMPARTMENT DOOR. CRANK BREAKER TO
"OPERATING" POSITION. OPERATE BREAKER TO VERIFY OPERATION
OF REMOTE PROVISIONS IN "OPERATING" POSITION.
THE BREAKER IS NOW READY FOR FULL SERVICE.
FIG. 6.5 BLOCKING THE DOOR INTERLOCK LEVER
1 . DOOR INTERLOCK LEVER
2. WOODEN BLOCK HOLDINC LEVER II OPERATED OR "IN"
POSITION
ACTUATE ALL TRIPPING DEVICES MANUALLY TO ESTABLISH
THAT THEY OPERATE PROPERLY.
THESE INCLUDE STANDARD AND OPTIONAL DEVICES:
MANUAL TRIP BUTTON -- PUSH TO TRIP
DRAWOUT GATE -- LOWER GATE TO TRIP
TRIP COILS -- RAISE PLUNGER BY HAND FROM BENEATH TO TRIP
UNDERVOLTAGE TRIP -- PUSH THE SOLENDOID PLUNGER FULLY
INTO THE SOLENOID, CLOSE THE BREAKER THEN RELEASE
THE PLUNGER TO TRIP
--CHECK THE DELAY IF TIMER IS INSTALLED
ANTI-SINGLE-PHASE DEVICE -- RAISE EACH SOLENOID PLUNGER
FROM BENEATH TO TRIP, RESETTING EACH BLOWN FUSE
INDICATOR WHEN FINISHED
FACEPLATE KEY INTERLOCK -- TURN KEY TO TRIP
CELL KEY INTERLOCK -- PUSH IN PLUNGER AT REAR OF BREAKER
TO TRIP
MECHANICAL INTERLOCK -- UPPER PLUNGER SHOULD EXTEND WHEN
BREAKER IS CLOSED. PUSH IN LOWER PLUNGER TO TRIP
DOOR INTERLOCK -- REMOVE BLOCKING DEVICE TO TRIP
OVERLOAD LOCKOUT -- RAISE TRIP COIL PLUNGER FROM BENEATH
TO TRIP, PUSH IN FACEPLATE BUTTON TO RESET.
REMOVE BLOCKING DEVICES FROM UNDER VOLTAGE TRIP AND
DOOR INTERLOCK BEFORE CONTINUING.
