tranSFer to StandByWhen the standby coil is energized it pulls the transfer switch mechanism to a overcenter position towards thestandby power source side, the transfer switch mechanically snaps to the standby position. On closure of themain contacts to the standby power source side, limit switches SW2 and SW3 are mechanically actuated to “arm”the circuit for re- transfer to utility power source side.Generator power from E1 and E2 is now connected to the customer load through T1 and T2.Page 65NEUTRALCONNECTIONSWITCHSW3NOC1COMSW2VR1NC NCCOMC2VR2NOTR115B231747 93 69F2CIRCUIT 10BLACK (MAIN 1)CONTROLTRANSFERRED (MAIN 2)NEUTRAL (WHITE)NEUTRAL (WHITE)230F1N2N115B23BLACKREDN2N115B240VAC TOTO GENERATOROUTPUTPANELMAIN DISTRIBUTIONT1T2T1 T2E2E2E2E2E1E1N1AN1AN2AN2ABBBBBE1E1E1N1AN1AN1A15B23E1E2205205126126E2N1AN2AN2AAN2A240VACOUTPUTGENERATORTS TOCONTROL PANELABSW1LCCIRCUIT 9CIRCUIT 6CIRCUIT 5CIRCUIT 2CIRCUIT 1CIRCUIT 3CIRCUIT 4CIRCUIT 7CIRCUIT 8CIRCUIT 11CIRCUIT 12CIRCUIT 13CIRCUIT 14CIRCUIT 16CIRCUIT 1514 CIRCUIT LOAD CENTER12 CIRCUIT LOAD CENTER10 CIRCUIT LOAD CENTER8 CIRCUIT LOAD CENTERT1T1F30WIRE-WIREBLK +REDBC016 CIRCUIT LOAD CENTERBC-BATTERY CHARGERN-NEUTRALTR1-TRANSFER RELAYSW2,SW3-LIMIT SWITCHESTB1-TERMINAL STRIPF1,F2,F3-5A, 600V FUSEC1-UTILITY COIL & RECTIFIERC2-GENERATOR COIL & RECTIFIERSW1-AUTOMATIC TRANSFER SWITCH(16 CIRCUIT SHOWN FOR REFERENCE ONLY)LC-CIRCUIT BREAKER (LOADS)LEGENDSENSINGUTILITYINSIDEGROUND (GREEN)GROUND (GREEN)UTILITYGENERATORGROUNDDCTRANSFER SWITCH sEctioN 3.2oPEratioNal aNalYsisPart 3Figure 6. Generator Powering Load.0G9266revA.indd 65 10/15/2008 11:27:27 AM
