Unit 3 and 4 Generator Rewind at Hartwell Powerhouse in Hartwell, GA

Unit 3 and 4 Generator Rewind at Hartwell Powerhouse: Intent of the requirement is to perform all work required to rewind two hydroelectric generating units at Hartwell Powerhouse, Hartwell, GA: - Pre-disassembly mechanical and electrical testing, alignment checks, and disassembly of two hydroelectric generating units. - Perform an electromagnetic finite element analysis of the proposed winding and core design to eliminate air-gap flux stator vibrations at fundamental and harmonic frequencies. - Analyze the existing frames for suitability for continued service with the new cores, keybars, and core clamping systems. - Inspect and evaluate the stator frame sole plates, condition of the frame and sole plate interface and develop options to improve the fit and function as necessary, and verify torque of foundation anchors and hold-down bolts - Design, manufacture, and perform voltage endurance testing on 5 prototype coils. - Manufacturer and perform thermal cycle testing on 5 prototype coils. - Manufacture, shop test, prepare and load for shipment, deliver f.o.b. destination, and unload two complete set of stator coils and all accessories. - Remove the old stator windings, stator cores and stator core clamping systems. - Furnish and install new circuit rings, surge rings, neutral current transformers, and surge arresters. - Furnish, install and test two new stator cores, stator windings and accessories. - Clean and inspect rotor, clean and test the rotor field poles winding, reinsulate the rotor field leads, and at the option of the government, refurbish the rotor poles. - Reassemble, perform start-up, commissioning, and testing of the generator including generator special field tests and model validation tests on the excitation and governor systems.

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Electrical, Packaged Generator Assemblies, Engine Generators.