Hydro Generators

Servicing Hydro-Generators in Hydro-Electricity projects :

Hydro Generators are susceptible to irregular water flow and sometimes prone to failure of their rotor and stator windings. SAEW has acquired immense knowledge and expertise in rewinding the stator and rotor windings and rendered their services in many Hydro-electric power stations in India.

Our Services:

  • Repairing of Hydro Generators,Gates Spherical Valves, BF valves, Pressure Relief Valves, Governors etc.,
  • Repairing of Stator Earth fault of Generators up to 150MW
  • Replacement of Stator Coils and Rotor Poles Coils and Repair to Stator and Rotor of Hydro Generators up to 150MW
  • Capital Overhauling of Hydro Generators up to 150MW
  • Replacement of Core with New Core at Site
  • Providing end caps for 11KV Stator Coils.
  • Flashing of Permanent Magnet Generator.
  • Reconditioning and Replacement of Turbine Runner in Hydro stations.
  • Replacement of Top head cover, Inner head cover, Bottom cover – Curbring, Labrinth ring etc., (including supply).
  • Rebabitting and erection of guide bearings, Thrust pads.
  • Erection of Thrust bearing, lower guide bearing, Turbine guide bearing etc. Alignment, reducing vibration and throw etc.
  • Reconditioning of guide vanes, bushes Top and Bottom/site re-boring etc and Budding of guide vane.
  • Cleaning and PressureTesting of oil cooler and Air cooler Alignment and Dynamic balancing of Hydro Generator and Turbines.
  • Providing high pressure oil injection system to lift the rotor of hydro Generator before starting and stopping to increase the life span of Thrust pads.
  • Repairing of Spherical Valves and BF valves.
  • Repair and Replacement of Musical note Rubber seals at Dam intake gates, and arresting water leaks.
  • Stator Rewinding.
  • Rotor Pole Changing.

Some of the projects where our skilled team rectified the defects :

Customer Project Nature of work done
Lower Sileru Power House Stator Fault Rectification of 115MW Unit No.4 replacing faulty Stator Bars with New Stator bars
Srisailam Power House Replacement of faulty Coils in 150MW Hydro Generators
Lower Sileru Power House Rectifying Stator Earth fault in 115MW Hydro Generator by Replacement of Coil
Machkund power house Rewinding and Re-Insulation of end connections done completely for 23 MW BBC, 11 KV Hydro Generator
Kolab Hydro Electric Project (Secunderabad) Dismantling & Removal of OLD Stator, Assembling & Retrofitting of New Stator & Other Related Work & Testing & Commissioning of unit IV 80MW
Upper Kolab Power House Complete Reconditioning of stator bars of 80MW Hydro Generator .
Srisailam Left Bank Power House Replacement of damaged stator winding coils and other work in 115 MW Generator Unit-I,II,III,IV
Machkund Power House Repair of damaged stator coils with using spare coils and re-insulating the bottom hang of all the stator coils of 23MW vertical BBC make Hydro Generator
MGHE Repair / Rectification and Replacement of faulty generator stator coil of 21.6MW Unit-7 (Including Supply of One No of Stator Coil)
Lower Sileru Power House Re-insulation and Reconditioning of 20Nos Rotor pole coils of 115MW Unit No-I
Mettur Dam Power House Replacement of aged stator core of unit – III 12.5 MW generator by new one.
Pykara power house Replacement of all stator coils of 7MW/11KV Generator Unit No. 3
Linganamakki Power House Erection, Testing & Commissioning of Digital Governors and its Associated Equipments at of 2X27.5MW in Karnataka
Andritz Hydro Bhadra Hydro Electric Project Dismantling, Refurbishment ,Re-erection ,Testing & Commissioning of 2X12MW River Bed Generating Units of Under R&M Scheme in Karnataka
Andritz Hydro Mettur Dam Power House Repairing, reassembling Turbine, labyrinth ring, Runner cone, turbine guide bearing, lower guide bearing, Thrust bearing etc and realigning and Dynamic balancing & commissioning of 115MW-11KV Hydro generator I and III
Srisailam Power House Repairing, Reassembling all the bearings, improving IR value of stator and rotor windings, testing and commissioning of 100 MW unit 5 of BHEL make Hydro generator
Srisailam Power House Repairing, Reassembling all the bearings, improving IR value of stator and rotor windings, testing and commissioning of 100 MW unit 5 of BHEL make Hydro generator
Srisailam Power House Realignment of 100 MW Unit 7 was done to reduce abnormal vibration and throw at TGB
Srisailam Power House Flashing of permanent magnet of 100MW generator at Unit No. 7
Kadamparai Power House Replacement of new end cap of 11 KV Stator winding of 100 MW
Machkund power house Rewinding and end connections done completely for 23 MW BBC, 11 KV Hydro Generation
Machkund power house The seats of 54 “ Spherical values of unit 4,5,6 of 23 MW Hydro Generator were metal built up and machined and erected again for arresting water leakage
Solaiyar Power House Abnormal Vibration and frequent thrust bearing failure in 35 MW Generator was set right by resetting all the bearing thrust Lower and T.G.B and Realigning the Generator and reducing the shaft Throw at Turbine guide bearing
Panniyar Power House Renovation & upgrading, including stator core replacement and winding of 14 MW Hydro generator 2 Nos.
Pochampedu Hydro Electric Power House Repair of Hydraulically operated Dam intake gate 3 Nos to arrest water leakages
Srisailam Right Bank Power House Repairs of bypass values and intake gate and providing seals to 7 intake gates of 100MW project.
Machkund Power House Repairs of Thrust pads and Realignment of Unit –1 of 18MW Hydro Generator and Unit 5 of 23MW Hydro Generator
Manufacture and Supply of Neutral grounding resistance for 11KV - 23 MW Hydro Generator
Metalising, Machining and Polishing of thrust collar and Rotating disc of 35MW Hydro Generator at, TNEB
Periyar Power House Replacing Turbine bottom head cover, Top head cover, Top labrinth ring, assembling carbon gland, TGB,LGB,Thrust pad, UGB and alignment of 35MW, 11KV Hydro generator 2 Nos
Pillur Power House, Kundah High pressure oil injection system for lifting the rotor of 50MW 11KV GE make Hydro Generator to increase the life of Thrust bearings
Servalar power House Flashing of Magnets of PMG of a Hydro - Generator
Machkund Power House Repairs of scroll case pressure relief valve of 23MW Generators 4 and 5
Machkund Power House Repairs of Hydraulic Governor of machine -I - 18 MW
Tungabhadra Dam Repairs of Hydraulic Governor of Generator
Tungabhadra Dam Dismantling, Repairing, Machining, Realigning of stuffing box for hydro generator
Periyar Power House Providing Multi-fire system for unit 4
Machkund Power House Replacement of Generator rotor poles 2 Nos for 18MW Generator
Donkarayi 22MW Power House Replacement of Rotor poles 3 Nos
Servalar power House Flashing of Magnets of PMG of a hydro generator