TM 9-4940-568-345-127This task covers:a. General Informationb. Testing Exciter Statorc. Testing Exciter Rectifier Bridge (Rotating Rectifier Assembly)d. Testing Exciter Rotore. Testing Main Rotor (Generator Field)f. Testing Main Statorg. Testing PMG ExciterINITIAL SETUPEquipment ConditionFRS unloaded, (TM 9-4940-568-10)Batteries disconnected, (TM 9-4940-568-10)Tools and Special ToolsMultimeter (Item 12, Appendix F)Socket Set, 3/8 in. (Item 52, Appendix F)Wheatstone Bridge (Item 73, Appendix F)Wrench, Torque 3/8 in. Drive (0 to 60 N.m) (Item 85, Appendix F)5-22. GENERATOR TESTING.Materials/PartsHeat-Shrink Compound (Item 48, Appendix B)a.General Information.These tests can be performed without removing the generator.Accidental starting of the generator set while working on it can cause severe personal injury ordeath. Prevent accidental starting by disconnecting the starting battery cables (negative [–] first).Arcing can ignite the explosive hydrogen gas given off by batteries, causing severe personal injury.Arcing can occur if the negative (–) battery cable is connected and a tool being used to connect ordisconnect the positive (+) battery cable accidentally touches the frame or other grounded metalpart of the set. To prevent arcing, always remove the negative (–) cable first, and reconnect it last.Always disconnect a battery charger from its AC source before disconnecting thebattery cables. Otherwise, disconnecting the cables can result in voltage spikes highenough to damage the DC control circuits of the set.
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
