Figure 2-3. Generator Load Terminal Board Connections

Figure 2-2. Grounding Procedures (Sheet 3 of 3)

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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TM 5-6115-545-12 TO-35C2-3-444-1 NAVFAC P-8-626-12 TM-00038G-12 WARNING LETHAL VOLTAGES ARE PRESENT AT THE LOAD CONNECTION BOARD OF THE GENERATOR SET DURING OPERATION. DO NOT ATTEMPT TO CON- NECT OR DISCONNECT LOAD LEADS WHILE THE GENERATOR SET IS OPERATING. DO NOT ATTEMPT TO CONNECT OR DISCONNECT LOAD LEADS WITH THE GENERATOR SET SHUTDOWN AND THE LOAD CONNECTED TO ANOTHER POWER SOURCE, OR WHILE THE GENERATOR SET IS PARALLELED TO ANOTHER THAT IS OPERATING. WHEN MAKING ANY ELECTRICAL CONNECTIONS, MAKE SURE THE DC CONTROL CIRCUIT BREAKER (FIG. 2-5) IS OPEN AND THE NEGATIVE BATTERY TERMINAL IS DISCONNECTED. TO PREVENT WATER AND MOISTURE DAMAGE TO CABLE, ROUTE THE POWER CABLE THROUGH THE LEATHER OR CANVAS BOOT. AFTER THE END OF THE BLACK INSULATION IS INTO THE BOOT, SECURE THE BOOT AROUND THE CABLE BY PULLING THE DRAW STRING. NEXT ROUTE THE CABLES OVER THE TERMINAL BOARD. THEN DOWN AND AROUND TO THE PROPER TERMINAL. NOTE ONE OR MORE SINGLE-PHASE LOADS CAN BE SERVED ALONE OR IN COMBINATION WITH 3-PHASE LOADS, BUT THE LOAD ON ANY ONE PHASE MUST NOT EXCEED 33 PERCENT OF THE CURRENT RATING OF THE ENGINE GENERATOR SET (PHASE BALANCE IS 5 PERCENT). STEP 1. 208V OR 416V SINGLE-PHASE LOAD CONNECTIONS. USING WRENCH PROVIDED, CONNECT FIRST LOAD TO L1 AND L2. CONNECT SECOND LOAD TO L2 AND L3. CONNECT THIRD LOAD TO L1 AND L3. STEP 2. 120V OR 240V SINGLE-PHASE LOAD CONNECTIONS. CONNECT FIRST LOAD TO L1 AND L0. CONNECT SECOND LOAD TO L2 and L0. CONNECT THIRD LOAD TO L3 AND L0. STEP 3. 3-PHASE LOAD CONNECTIONS. THE PHASE SEQUENCE OF THE ENGINE GENERATOR SET OUTPUT IS L1-L2-L3 AND INSURE THAT THE EXTERNAL LOAD IS APPROPRIATELY CONNECTED. Figure 2-3. Generator Load Terminal Board Connections Change 14 2 - 8

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