Equipment: Allis Chalmers 15 MVA, 60 kV–12470/7200 V transformer with a 1967 TLH-21 tap changer; replace with a certified remanufactured TLH-21 unit.
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What the job is
Repairs: Reseal barrier board and pass-through studs; replace tap changer door and handhold gaskets, valves and gaskets on all six radiators, and seals disturbed during work. Remove and reinstall the 60 kV SMD fuse holder for radiator access; pressure-test the main tank.
Oil handling: Drain 760 gallons of tap changer oil into provided disposal containers. Supply a tanker for 4,348 gallons of main tank oil, process and reuse that oil, vacuum-fill the transformer, and supply 760 gallons of new tap changer oil.
Testing: Perform pre- and post-work bushing/winding power factor, turns ratio, excitation, winding resistance, and dissolved gas/oil quality tests; include post-work SFRA.
Pricing: Include all labor, equipment, and materials, with separate lump sums for field work and TLH-21 components. De-energizing, isolation, grounding, and disposal of discarded oil will be handled by the site owner.
Requirements: California Class A contractor license, current DIR registration, and applicable prevailing wage rates.
XL Eagle