Figure 2-10.1. Parallel Operation of Tactical Utility Generator Sets (Load Sharing and Load Transfer) (Sheet 4 of 4)

Figure 2-l0.l. Parallel Operation of Tactical Utility Generator Sets (Load Sharing and Load Transfer) (Sheet 3 of 4)

Section V. OPERATION UNDER UNUSUAL CONDITIONS - TM-5-6115-545-12_121

TM-5-6115-545-12 Power Unit Utility Pack Gas Turbine Engine Driven (Air Research Model PPU85-5) Non-Winterized and (Air Research Model PPU85-4) Winterized Manual
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STEP 1. THE SET IN OPERATION SHALL BE DESIGNATED AS “ON-LINE” AND THE SETS PLACED IN PARALLEL OPERATION SHALL BE DESIGNATED “ON-COMING.” STEP 2. PLACE THE OPERATIONS SWITCH (FIGURE 2-5) ON BOTH SETS IN THE PARALLEL OPER- ATION POSITION. CAUTION DO NOT CLOSE THE CIRCUIT BREAKER SWITCH AFTER STARTING THE “ON-COMING” SET AS SERIOUS DAMAGE TO ONE OR BOTH GENERATOR SETS MAY RESULT. STEP 3. REFER TO FIGURE 2-6 AND 2-7 (DO NOT PERFORM STEP 8 OF FIGURE 2-7), AND START THE “ON-COMING” SET. STEP 4. NOTE THE VOLTAGE INDICATED ON THE “ON-LINE” SET. ADJUST THE VOLTAGE OF THE “ON-COMING” SET TO THE VOLTAGE NOTED ON THE “ON-LINE” SET. STEP 5. ADJUST THE FREQUENCY OF THE “ON-COMING” SET TO A HIGHER VALUE THAN THAT OF THE “ON-LINE” SET. STEP 6. SLOWLY REDUCE LIGHTS FLASH AT 2 TO 3 THE FREQUENCY OF THE “ON-COMING” SET UNTIL THE SECOND INTERVALS. SYNCHRONIZING CAUTION DO NOT PLACE THE CIRCUIT BREAKER SWITCH OF THE “ON-COMING” SET IN THE CLOSE POSITION WHILE THE SYNCHRONIZING LIGHTS ARE LIT AS DAMAGE TO ONE OR BOTH GENERATOR SETS MAY RESULT. STEP 7. CAREFULLY WATCH THE SYNCHRONIZING LIGHTS OF THE “ON-COMING” SET. AT THE INSTANT BOTH LIGHTS GO DARK, MOVE THE CIRCUIT BREAKER SWITCH OF THE “ON-COMING” TO THE CLOSE POSITION. STEP 8. ADJUST THE VOLTAGE AND FREQUENCY RHEOSTATS OF BOTH SETS UNTIL LOAD AND RENT ARE DIVIDED EQUALLY BETWEEN THE TWO GENERATOR SETS,AS EXPLAINED IN FIGURE 2-10.1, PARAGRAPH A, STEPS 7 AND 8. SET CUR- STEP 9. MOVE THE CIRCUIT BREAKER SWITCH OF THE “ON-LINE” SET TO THE OPEN POSITION. STEP 10. PLACE THE OPERATIONS SWITCH OF THE “ON-COMING” SET TO THE SINGLE UNIT OPER- ATION POSITION. STEP 11. READJUST VOLTAGE AND FREQUENCY OF THE “ON-COMING” SET AS NECESSARY. STEP 12. REFER TO FIGURE 2-8 AND STOP THE “ON-LINE” SET. Figure 2-10.1. Parallel Operation of Tactical Utility Generator Sets (Load Sharing and Load Transfer) (Sheet 4 of 4) Change 12 2-26.7/(2-26.8 blank)

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