ARMY TM 9-6115-604-12
NAVY NAVFAC P-8-633-12
STEP 3
SET
ISOCHRONOUS/FREQUENCY
DROOP
SWITCH
TO
FREQUENCY
DROOP
ON
ON-LINE
GENERATOR SET AND EACH INCOMING GENERATOR SET THIS SWITCH IS ON CABINET B IN THE
CONTROL ROOM OF EACH GENERATOR SET.
STEP 4
ON-LINE SET: SET MASTER SWITCH TO START AND RELEASE TO RUN. (THE ENGINE WILL
AUTOMATICALLY CRANK FOR 15 SECONDS AND REST FOR 15 SECONDS UNTIL THE ENGINE HAS
STARTED, FOR A TOTAL OF FOUR CRANK CYCLES )
STEP 5
ON-LINE SET: ADJUST FREQ ADJ RHEOSTAT FOR A FREQUENCY METER READING OF 50 HERTZ OR
60 HERTZ, AS APPLICABLE.
STEP 6
ON-LINE SET: SET GEN/BUS VOLTMETER SWITCH TO GEN 3-1.
STEP 7
ON-LINE SET: ADJUST VOLT ADJ RHEOSTAT FOR AN AC KILOVOLTS READING OF 4 16 KILOVOLTS
(FOR 60 HERTZ OPERATION) OR 3 8 KILOVOLTS (FOR 50 HERTZ OPERATION).
STEP 8
ON-LINE SET: SET GEN/BUS VOLTMETER SWITCH TO GEN 2-3, THEN GEN 1-2 VERIFY THAT AC
KILOVOLTS READING IS THE SAME AT ALL THREE SETTINGS.
STEP 9
ON-LINE SET: SET PARALLEL SWITCH TO SINGLE SET, SINGLE SET INDICATOR WILL LIGHT.
STEP 10 ON-LINE SET: SET BREAKER CONTROL SWITCH TO CLOSE. CLOSED INDICATOR WILL LIGHT.
STEP 11 ON-LINE SET: SET PARALLEL SWITCH TO PARALLEL. PARALLEL INDICATOR WILL LIGHT.
STEP 12 INCOMING SET: SET MASTER SWITCH TO START AND RELEASE TO RUN (THE ENGINE WILL
AUTOMATICALLY CRANK FOR 15 SECONDS AND REST FOR 15 SECONDS UNTIL THE ENGINE HAS
STARTED, FOR A TOTAL OF FOUR CRANK CYCLES ).
STEP 13 INCOMING SET: ADJUST FREQ ADJ RHEOSTAT FOR A FREQUENCY METER READING OF 50 HERTZ
OR 60 HERTZ, AS APPLICABLE.
STEP 14 INCOMING SET: SET GEN/BUS VOLTMETER SWITCH TO GEN 3-1.
STEP 15 INCOMING SET: ADJUST VOLT ADJ RHEOSTAT FOR AN AC KILOVOLTS READING OF 4 16 KILOVOLTS
(FOR 60 HERTZ OPERATION) OR 3 8 KILOVOLTS (FOR 50 HERTZ OPERATION).
STEP 16 INCOMING SET: SET GEN/BUS VOLTMETER SWITCH TO GEN 2-3, THEN GEN 1-2. VERIFY THAT AC
KILOVOLTS READING IS THE SAME AT ALL THREE SETTINGS.
STEP 17 INCOMING SET: CHECK PHASE SEQUENCE USING PHASE SEQ. SEL. SW AND 1-2-3-AND 3-2-1
INDICATOR LIGHTS. ENSURE THAT SETS ARE IN PHASE BEFORE PROCEEDING.
STEP 18 INCOMING SET: SET PARALLEL SWITCH TO PARALLEL. PARALLEL INDICATOR WILL LIGHT.
STEP 19 INCOMING SET: SET SYNCHROSCOPE SWITCH TO ON SYNCHROSCOPE WILL BEGIN ROTATING AND
LIGHTS WILL BEGIN BLINKING.
STEP 20 INCOMING SET: ADJUST FREQ ADJ RHEOSTAT UNTIL SYNCHRONIZING LIGHTS ARE BLINKING VERY
SLOWLY. AND SYNCHROSCOPE NEEDLE IS ROTATING SLOWLY IN THE CLOCKWISE (FAST)
DIRECTION.
STEP 21 INCOMING SET: ADJUST VOLT ADJ RHEOSTAT USING GEN/BUS VOLTMETER SWITCH AND AC
KILOVOLTS METER UNTIL GEN AND BUS VOLTAGES ARE IDENTICAL.
STEP 22 INCOMING SET: WHEN SYNCHRONIZING LIGHTS ARE DARK AND SYNCHROSCOPE NEEDLE IS IN 12
O'CLOCK POSITION, SET BREAKER CONTROL SWITCH TO CLOSE. CLOSED INDICATOR WILL LIGHT.
STEP 23 INCOMING SET: SET SYNCHROSCOPE SWITCH TO OFF.
STEP 24 ALL SETS: ADJUST VOLT ADJ AND FREQ ADJ RHEOSTATS TO BALANCE THE LOAD ON ALL SETS AS
INDICATED BY THE KILOVAR AND AC KILOWATTS METERS ADJUST VOLT ADJ TO EFFECT KILOVARS
ADJUST FREQ ADJ TO EFFECT KILOWATTS.
STEP 25 IF ADDITIONAL GENERATOR SETS ARE TO BE PARALLELED, REPEAT STEP 12 THROUGH STEP 24,
ABOVE, FOR EACH SET.
STEP 26 ALL SETS: LOAD CHANGES WILL AFFECT VOLTAGE AND FREQUENCY OF DROOP-PARALLELED
SETS EQUALLY. TO VARY FREQUENCY OR VOLTAGE OUTPUT OF DROOP-PARALLELED SETS,
ADJUST FREQ ADJ OR VOLT ADJ RHEOSTATS THE SAME WAY (INCREASE OR DECREASE) ON BOTH
SETS.
STEP 27 ALL SETS: PERIODICALLY (NOT LESS THAN ONCE PER HOUR) MONITOR ENGINE AND GENERATOR
INDICATORS TO ENSURE CONTINUED OPERATION.
STEP 28 ALL SETS: PERFORM 'DURING OPERATION" PREVENTIVE MAINTENANCE CHECKS AND SERVICES
AS SPECIFIED IN Table 3-2.
STEP 29 TO STOP ENGINE REFER TO Figure 2-26.
Figure 2-24. Remote Droop Parallel Operation (Sheet 2 of 2)
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