REPAIR,REWINDING OF HYDROGENERATORS

Repairing of Hydro Generators:

Our Services
Repairing of Hydro Generators,Gates Spherical Valves,
   BF valves, Pressure Relief Valves, Governers      etc.,
Repairing of Stator Earth fault of Generators up   to 300MW
Replacement of Stator Coils and Rotor Poles       Coils and Repair to Stator and Rotor of Hydro     Generators up to 300MW
Capital Overhauling of Hydro Generators up to   300MW
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 reboring 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.(Supply of New Stator core      and Coil)
Rotor Pole Changing.

Major Works Carried Out

Supply of New Stator Coils ,Re-Insulation Stator Coils & Rotor Pole Coils for 100MW Generator of Kadamparai PH TANGEDCO Order From BHEL SAS Secunderbad.
Dismantling the damaged runner, Positioning the runner half’s assembly with new coupling hardware ,arrangement of heating ,welding, cooling and annealing ,repairing the damaged runner of 150MW Unit at Srisailam left bank power station Project Order from APGENCO Ltd
Blue matching ,Scrapping and fitting of all bearing with gap setting/load sharing ,centring ,alignment of the Generator turbine along with all other associated works required for satisfactory operation and commissioning of the Unit No.3 of BHEP, Balimela Order from OHPC Ltd
Dismantle, Removal, Repair, Ratification installation of main seal of shutoff Rotary valve and adjustment of Guide vane gaps (Bedding) of Unit No,8(Turbine made of Russia and having Rated output 76MW ) for B.H.E.P ,Balimela Order from OHPC Ltd.
Replacement of MIV Seals(Working Seals) of 50MW Unit-3 at Loktak Power House Order form NHPC Loktak
Rengali.H.E.P Rengali- Unit- 1- R E P Rengali Dam-50 MW Retro- fitting work including repair of stator, Rotor and Runner / Replacement of runner Order From BHEL SAS Secunderbad
KSEB- Idamalayar HEP Unit -1-37.5 MW – Dismantling, Re-Erection and Commissioning of existing Generating unit to introduce new Static Excitation Equipment, Governor Control, HP Lubrication System etc runner Order From BHEL SAS Secunderbad
Stator Fault Rectification of 115MW Unit No.4 Replacing faulty Stator Bars with New Stator bars as per the Detailed Scope of Work at Lower Sileru Power House APGENCO.
Replacement of faulty Coils in 150MW Hydro Generator sin Srisailam PH APGENCO
Rewinding and Re-Insulation of end connections done completely for 23 MW BBC, 11 KV Hydro Generation at Machkund power house – APGENCO
Dismantling & Removal of OLD Stator, Assembling & Retrofitting of New Stator & Other Related Work as Per Scope of Work Testing & Commissioning of unit IV 80MW at upper Kolab Hydro Electric Project Order from BHEL Secunderabad.
Complete Reconditioning of stator bars of 80MW Hydro Generator of Upper Kolab Power House – Orissa State Order from BHEL Secunderbad.
Replacement of damaged stator winding coils and other work in 115 MW Generator Unit-I,II,III,IV at Srisailam Left Bank Power House,APGENCO.
Repair of damaged stator coils with using spare coils and Reinsulate the bottom hang of all the stator coils of 23MW vertical BBC make Hydro Generator at Machkund PH(APGENCO).
Repair / Rectification and Replacement of faulty generator stator coil of 21.6MW Unit-7 at MGHE,KPCL( Including Supply of One No of Stator Coil).
Re insulation and Reconditioning of 20Nos Rotor pole coils of 115MW Unit No-I at LSHE.
Replacement of aged stator core of unit – III 12.5 MW generator by new one – at Mettur Dam Power House,TNEB.
Replacement of all stator coils of 7MW/11KV Generator Unit No. 3 At Pykara power house Singara,TNEB.
Re-insulation of stator coils of unit I10MW/11KV Generator of Mettur Dam Power House,TNEB.
Erection,Testing & Commissioning of Digital Governors and its Associated Equipments at Linganamakki Power House of 2X27.5MW in Karnataka Order from ANDRITZ HYDRO.
Dismantling,Refurbishment ,Re-erection ,Testing & Commissioning of 2X12MW River Bed Generting Units of Bhadra Hydro Electric Project Under R&M Scheme in Karnataka State Order from ANDRITZ HYDRO.
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 at Lower Sileru Power House, APGENCO.
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 at Srisailam Power House,APGENCO.
Realignment of 100 MW Unit 7 at Srisailam was done to reduce abnormal vibration and throw at TGB.
Flashing of permanent magnet of 100MW generator at Srisailam Power House Unit No. 7.
Replacement of new end cap of 11 KV Stator winding of 100 MW at Kadamparai Power House.
Removal of stator coils from core and top & bottom coils were insulated with class 'F.
Rewinding and end connections done completely for 23 MW BBC, 11 KV Hydro Generation at Machkund power house – APGENO.
The seats of 54 “ Spherical values of unit 4,5,6 of 23 MW Hydro Generator at Machkund PH APGENCO were metal built up and mechined and erected again for arresting water leakage.
Abnormal Vibration and frequent thrust bearing failure in 35 MW Solayar PH II TNEB 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.
Renovation, Uprating including stator core replacement and winding of 14 MW Hydro generator 2 Nos at Panniyar Power House, KSEB.
Repair of Hydraulically operated Dam intake gate at Pochampedu Hydro Electric Power House, APGENCO - 3 Nos to arrest water leakages.
Repairs of By pass values and intake gate and providing seals to 7 intake gates of 100MW Srisailam Right Bank Power House.
Repairs of Thrust pads and Realignment of Unit –1 of 18MW Hydro Generator and Unit 5 of 23MW Hydro Generator at Machkund Power House APGENCO.
Manufacture and Supply of Neutral grounding resistance for 11KV - 23 MW Hydro Generator.
Metelising, Machining and Polishing of thrust collar and Rotating disc of 35MW Hydro Generator at Periyar Power House, TNEB.
Replacing Turbine curbring, 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 at Periyar P.H TNEB.
High pressure oil injection system for lifting the rotor of 50MW 11KV GE make Hydro Generator at Pillur P.H Kundah TNEB to increase the life of Thrust bearings.
Flashing of Magnets of PMG of a Hydro - Generator at Servalar power House TNEB.
Repairs of scroll case pressure relief valve of 23MW Generators 4 and 5 at Machkund Power House, APGENCO.
Repairs of Hydraulic Governor of machine -I - 18 MW at Machkund Power House, APGENCO.
Repairs of Hydraulic Governor of Generator at Tungabhadra Dam - APGENCO.
Dismantling, Repairing, Machining, Realigning of stuffing box for hydro generator at Tungabhadra Dam - APGENCO.
Providing Mulsifire system for unit 4 at Periyar Power Hosue,TNEB.
Replacement of Generator rotor poles 2 Nos for 18MW Generator at Machkund Power House, APGENCO.
Replacement of Rotor poles 3 Nos for Donkarayi 22MW Generator APGENCO.
Flashing of Magnets of PMG of a hydro - generator at Servalar power House TNEB.

For More Details send your Enquiries or Call us.

Shree Abirami Enggineering Works.
Plot No: 56, Arunachalam Main Road,
Ambal Nagar, Porur, 
Chennai-600 116.

Phone : +91-44-2482 5906 ,2482  7572, 2482 7769,2482 7256,4383 3142
Telefax : +91-44-2482 7572
Mobile : +91 9444386906,9841044595
E-mail : saew92@gmail.com 
Website : www.abiramiengg.in


Website   : www.abiramiengg.com