Internal Inspection of Shell Form Westinghouse 30MVA Arc Furnace Transformer. Included new gaskets on all tank connections, replaced loose blocking, testing, rewiring tap changer control, and vacuum filling with new oil.
Transformer was taken apart and prepared for shipment at a facility – primary bushings removed – secondary bushings protected for truck shipment – supervised rigging and load out.
IET trailer parked by transformer that was being serviced. A raccoon had climbed up on the top of the unit and caused a flash over destroying all the primary and secondary bushings. We replaced all the bushings, removed the radiators and replaced all flange gaskets as the unit had numerous leaks, then vacuum filled, tested and returned to service.