TM 9-6115-662-13&Pc.d.e.f.g.h.On operating generator set (generator 1), set UNIT-PARALLEL switch (16, figure 2-9) toPARALLEL.Start generator set 2. Adjust voltage and frequency to match generator set 1.At switch box, set generator set 2 ON-OFF switch (3 or 6) to ON (Switch box STATUS and ONLINE lights for both generator sets should be lit).At generator set 2 control panel:(1)(2)(3)(4)Set UNIT-PARALLEL switch (16) to PARALLEL. Both SYNCHRONIZING LIGHTS (12)should be going bright to dark together.CAUTIONIf synchronizing lights on generator set 2 do not go bright and dark inunison, the phasing is wrong. Shut down generator sets and check thatload cables are connected properly. Failure to observe this caution canresult in damage to generator sets.Increase frequency until SYNCHRONIZING LIGHTS (12) blink together one or more times persecond.Decrease frequency until SYNCHRONIZING LIGHTS (12) blink together once every 3-4seconds.While both synchronizing lights are dark, position and hold AC CIRCUIT INTERRUPTERswitch of generator set 2 in-the CLOSED position until indicator lights. SYNCHRONIZINGLIGHTS should go out (both generators are now operating in parallel).Once both of the generator sets are on line and supplying power to the load in parallel, performthe following steps to transfer the load.(1) At the control panel of the generator set that is to be taken off line (generator set 1), set theAC CIRCUIT INTERRUPTER switch to the OPEN position. Set UNIT-PARALLEL switch toUNIT, MASTER SWITCH to OFF. (At switch box, STATUS and ON-LINE lights for generatortaken off line should go off.)(2) At the control panel of the running generator set (generator set 2), place the UNIT-PARALLELswitch to UNIT. The load has now been transferred.Perform the generator PMCS listed as DURING for generator set 2 and AFTER for generator set1.2-40
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