Hibbs ElectroMechanical, Inc. has nearly 20 years of experience repairing/rewinding rotating exciters from 340 KW to 3105 KW.
Upon arrival at the Hibbs ElectroMechanical facility, the motor/exciter including skid will be disassembled, all parts cleaned, components electrically tested, parts mechanically inspected and measured. After the initial testing and inspection, an electronic In-Process Failure Analysis Report will be submitted for work authorization.
Pre-Planning with use of a Gantt Chart can be developed to establish a repair timeline focusing on specific milestones.
Formulation of Gantt Chart
- Can be integrated into site plan and updated
- Disassemble all parts
- Clean all parts
- Inspect and measure bearings
- Inspect, measure, and polish bearing journals
- After cleaning perform electrical tests (Insulation Resistance, Polarization Index, HiPot and Surge) on fields, interpoles, armature and electrical accessories
- Undercut commutator
- Rewind / Main Exciter / Polot Exciter (if applicable) / Armature with Equalizers / Fields / Interpoles / Pole-Face Windings
- Replace all mounting insulators on Buss (G-10 or G-11)
- Assemble and laser align all components
- Repair / Replace all insulating boards for the Main Generator, Buss and Brush Rigging
- Replace Sealtite Conduit
- Replace Control wiring – SIS Instrument wire 105C
- Replace Fuse Holders
- Replace Terminal Strips
- Replace wiring to lights on skid
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Replace RTD’s and thermocouples
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Clean and Inspect in line oil strainers and orifices
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Gearbox Inspection
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Flush Gearbox
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Inspect gears for alignment and damage
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Check Backlash
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Rockwell Hardness test of gears
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Check Oiler
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Assemble and laser align all components
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Partial / Full load test (500 VDC / 1000 AMP max) after assembly including laser alignment to the test-stand drive, motor vibration analysis, bearing temperature stabilization, voltage and current output
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The exciter assembly will be painted and wrapped for shipment