Projects and Case Studies

Looking to extend the lifespan of your asset? 

Australian Winders combines technology and the best technicians to maximise asset longevity.

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Kangaroo Valley Hydro Generator Overhaul

Inspection, repairs and testing to improve power generation

Australian Winders were engaged by Origin energy to undertake a thorough inspection of their U3 Hydro Generator at the Kangaroo Valley Power Station in NSW, Australia. The inspections found the following issues which Australian Winders proposed to be rectified in the next outage: 50% hollow or loose stator wedges, loose and inconsistent stator and rotor core clamping, damage to winding insulation, damage to iron core (loose/separated core packs). Australian Winders were then contracted to carry out the works which included: Dry ice blasting of the rotor and stator core, EL-CID testing stator core, resonance testing stator core bolts, remove all stator and rotor core bolts, clean threads, grease and reinstall and torque to correct resonance settings, weld new core nut locking tabs, removal of loose stator wedges, top bar contact resistance tests and corona protection restoration, repair iron core damage, re-wedge stator, full wedge hardness tests and map, installation of new air gap sensors and flux probe, final electrical tests and paint. This project was successfully completed within the allocated timeframe.
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Turbo Generator Rewind & Repair

Routine rewind and repair for large Siemens generator

Australian Winders supplies manpower to Siemens USA to assist them on their major rewind and repair projects both in the USA and across the globe. Some of these projects include:
  • Repairs/modifications, Kuosheng Taiwan
  • Strip and rewind 180MW Siemens/Westinghouse Aero Pac turbo generator at Calpine, Hermiston USA
  • Strip and rewind x3 240 MW Siemens Aeropac turbo generator at South Point Power station Arizona, USA
  • Turbogen rewind,Thomas Hill, Missouri,USA
  • Turbogen rewind ,Ginna Nuclear power plant , NY,USA
  • Turbogen Rewind, Amarillo, Texas USA
  • Turbogen rewind Cunningham Power station, New Mexico USA
  • Turbogen re-wedge, Ironwood, Pennsylvania,USA
  • Generator inspection / repair / blocking install (6 units) Jangmoon, South korea
  • Generator inspection / repair / blocking install (3 units) Dangjin, South Korea
  • Turbogen rewind Salem NJ, USA
Mining

Mining Mill Drive Installation, Repair and Partial Rewind

Mill Drive Installation

Complete installation of a gearless mill drive in numerous sites worldwide, repair and partial rewind done in Chile and Australia for Siemens.
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Toshiba 720MW Turbo-Generator Rewinds

Rewind & Upgrades

Toshiba 660MW-720MW water cooled rewind and upgrades Bayswater and Mount Piper power stations NSW 6 week rewind durations Generator windings reaching design end of life
  • Removal of existing windings
  • Clean conditions setup and Foreign Material Exclusion (FME)
  • New winding install – bottom bars and top bars
  • Bar seating (hose moulding) and bakeout
  • Connection brazing (oxy propane)
  • Brazing checks / SCW system leak checks
  • Wedging and lateral wedges (side ripple)
  • Anti-tracking varnish, gas baffles and monitoring systems
  • Electrical testing
All four rewinds were completed within allocated timeframe, no LTIs recorded and all tests met the acceptance criteria.

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