NCTPS I ES Circle EM I Dn S Dn IV Stator rewinding of 6 6KV 3500KW 1485 RPM 371A Boiler Feed Pump motor 2A Sl No 32304 P 401 01 4

STATOR REWINDING (6.6KV) GVPI: Charges towards stripping out of old winding, cleaning the slots, conducting hot spot tests to find out the core damages, removing the stator core pack from the stator yoke by hydraulic press using special jigs and fixtures, rewinding the stator using class ‘F’ enameled polymica covered electrolyte grade rectangular copper conductors for rewinding coils as per the original shape and dimension by using special jigs and dies, pre-staggering the coil with thermopreg, insulating the slot protection tapes and stress grading tapes, inserting the slot portion using semi copper insulating materials, applying corona protection tapes and stress grading tapes, inserting the coils in to the slot, banding the overhang portions in the surge ring, forming the end connection, fixing 12 nos RTD’s prehearing, Global Vacuum Pressure Impregnating the winding with core pack in vaccum chamber using suitable poly epoxy resin, baking, testing re-fixing the core pack into the stator yoke with special jigs and fixtures in hydraulic press, providing flexible silicon cables, applying finishing varnishes including assembling, no load trial run and measuring all no load parameters.

STATOR CORE RESTACKING: Charges towards mounting the stator body in hydraulic press, removing the core pack from stator body with special tools and machineries after heating the stator yoke with special heating arrangements, segregating the damaged stator core from core pack, removing the old burnt core plate varnishes by chemical treatment, cleaning, removing the surface links, varnishing the stampings, in re-varnishing cum conveyor oven to cure the core plate varnish, staggering the core with special tools and machineries, looking and repositioning the core pack to the stator body by hydraulic press and finally conducting the flux loop test to ascertain the restacked core healthiness, cleaning and polishing the slots ready to feeding.

To & Fro Transport Charges

Buy back of copper scrap retrieved from the motor