Bottom Coil fitment & Winding under progress
Bottom Coil fitment & Winding under progress
Bottom Coil fitment & Winding under progress
Bottom Coil fitment & Winding under progress
After complete fitment of bottom coils
After complete fitment of Top & Bottom coils
Conducting Nitrogen Pressure test for coils
After brazing of Series I Joints
Tig brazing of tubes & Teflon tube fitment under progress
Tig brazing of tubes & Teflon tube fitment under progress
Tig brazing of tubes & Teflon tube fitment under progress
Insulating of I joints, Copper Tubing & Teflon tubes
Insulating of I joints, Copper Tubing & Teflon tubes
Insulating of I joints, Copper Tubing & Teflon tubes
Applying winding finishing coating for complete stator winding
After completion of winding, testing & ready for assembling of generator e
After completion of winding, testing & ready for assembling of generator
210 MW 15.75 KV 3000 RPM BHEL make Steam Turbine Generator Client: M/s.Dr. Narla Tata Rao Thermal Power Station, Vijayawada, A.P Removing of damaged Half coils from the STG Stator
210 MW 15.75 KV 3000 RPM BHEL make Steam Turbine Generator Client: M/s.Dr. Narla Tata Rao Thermal Power Station, Vijayawada, A.P Repair & Brazing of I Joint for Generator Stator Bars
210 MW 15.75 KV 3000 RPM BHEL make Steam Turbine Generator Client: M/s.Dr. Narla Tata Rao Thermal Power Station, Vijayawada, A.P After Complete Overhauling of Generator Rotor

188 MVA 15 KV 3000 RPM TOSHIBA make Steam Turbine Generator Client: M/s.Ministry Of Electricity & Water, Kuwait Toshiba, Japan & A.G.G.Kuwait Photograph of Copper Particle Countermeasure Work

GENERATOR ROTOR

REMOVAL OF RETAINING RING
REMOVAL OF ROTOR WEDGES
REMOVAL OF ROTOR COILS
REMOVAL OF ROTOR COILS
CLEANING OF ROTOR SHAFT
NDT OF ROTOR SHAFT
NDT OF RETAINING RING
ANNEALING OF ROTOR COILS
CLEANING OF ROTOR COILS
SPOT BRAZING OF ROTOR COILS
SETTING UP OF CLEAN ROOM
ASSEMBLING OF ROTOR COILS
CLAMPING OF ROTOR COILS
DRY-OUT OF ROTOR COILS
ASSEMBLING OF ROTOR WEDGES
ASSEMBLING OF DISTANCE BLOCKS
ASSEMBLING OF R.RING INSULATION
FITTING OF RETAINING RINGS
VARNISHING OF RETAINING RINGS
CONNECTING OF LEADS
LEAK TEST OF ROTOR LEAD SEAL
LOCKING OF ROTOR WEDGES
LOW SPEED BALANCING TEST

30 MVA 11 KV 3000 RPM SIEMENS MAKE STG Rotor Complete Rewinding Client: : M/s Sree Rayalseema Alkalis & Allied Chemicals Ltd

Old damaged winding after removing of Retaining Rings

 

 

Layer to layer flash over
After complete removing of winding Retaining Rings
After complete removing of winding Retaining Rings
After complete cleaning & applying moisture proof varnish
Winding under Progress
Winding under Progress
Winding under Progress
Winding under Progress
30.2MVA, 11KV Siemens Make Generator Client: M/s Ultratech Cements Ltd, Awarpur, Maharashtra. This is a large size 4 pole 11 KV cylindrical rotor generator, originally manufactured by SIEMENS, GERMANY with VPI technology. The system has been re-designed by our design experts for resin rich system and successfully manufactured by RKEWW using special skills for rotor repair work including removing and re-inserting retaining rings. The damaged stator core is taken out, repaired, and re- staggered just in a span of 46 days. This has been done by RKEWW entirely to the satisfaction of the customer & Tata Power Consultancy.
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18.68 MW 11KV 1500RPM GEC Alstom make Alternator Rotor Client: M/s. Terra Energy Limited, Thiru Arooran Sugars Ltd, Tamil Nadu.

Complete Redesign of winding from Concentric to Cylindrical System.

After completion of winding and banding with Resi Glass Tapes.

15 MW 11 KV 3000 RPM 2 pole machine ALSTOM (France) made Client: M/s. AndhraPradesh Paper Mills Ltd., Andhra Pradesh.

Inspection of damaged rotor overhang portion after removing of End Bell (Retaining) Rings.

Complete stripping of all bars and cleaning the slots.

15 MW 11 KV 3000 RPM 2 pole machine ALSTOM (France) made Client: M/s. AndhraPradesh Paper Mills Ltd., Andhra Pradesh.

Winding of complete rotor with Class H Insulation under Progress.

 

After complete rewinding, inspection of rotor wedges
15MW 11KV 3000 RPM Fong Dong China make alternator's stator belongs to M/s. Gopani Steel & Power Limited. Complete stripping of damaged half coils from the Stator.

15MW 11KV 3000 RPM Fong Dong China make alternator's stator belongs to M/s. Gopani Steel & Power Limited.

Stator ready for winding after conducting Eddy Current Test

 

15MW 11KV 3000 RPM Fong Dong China make alternator's stator belongs to M/s. Gopani Steel & Power Limited.

Stator winding under progress with new manufactured Half Coils

15MW 11KV 3000 RPM Fong Dong China make alternator's stator belongs to M/s. Gopani Steel & Power Limited.

After complete winding,varnishing of Stator.

 

15MW 11KV 3000 RPM BTH Turbo Generator Stator Client: M/s Sree Rayalseema Alkalis & Allied Chemicals Ltd,

Complete rewinding of stator winding in a record time of 45 days in site.

11.8 MW 1500 RPM 10 KV Synchronous Motor Client: M/s Neelachal Ispat Nigam Ltd, Dubri, Orissa.
Complete rewinding of stator and rotor winding with replacing the damper bars and damper rings with matching the parent metal compositions and is running successfully.
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7.5MW 6.6KV 3000RPM, Metropolitan Vickers make STG Stator &Rotor Client: The Sirpur Paper Mills Ltd, Sirpur Kaghaznagar, A.P.

Stator after complete rewinding with new manufactured Half Coils at site.

Rotor after completion of rewinding and ready for Resi-Glass Banding.

Complete rewinding of stator and rotor and replacement of both DE & NDE side with new Retainer Rings imported from Germany in a competitive time.

 

7.5MW 11KV 1500RPM BHEL make Turbo Generator Stator &Rotor Client: M/s Indur Green Power Private Limited.
7.5MW 11KV 1500RPM BHEL make Turbo Generator Stator &Rotor Client: M/s Indur Green Power Private Limited.
7.5MW 11KV 1500RPM BHEL make Turbo Generator Stator &Rotor Client: M/s Indur Green Power Private Limited.
7.5MW 11KV 1500RPM BHEL make Turbo Generator Stator &Rotor Client: M/s Indur Green Power Private Limited.
7.5MW 11KV 1500RPM BHEL make Turbo Generator Stator &Rotor Client: M/s Indur Green Power Private Limited.
6MW 1500 RPM 11KV Jyothi make Turbo Generator Client: M/s Adinath Sahakar Sarkari Kharkhana Ltd, Sholapur, Maharashtra.
6MW 1500 RPM 11KV Jyothi make Turbo Generator Client: M/s Adinath Sahakar Sarkari Kharkhana Ltd, Sholapur, Maharashtra.
6MW 1500 RPM 11KV Jyothi make Turbo Generator Client: M/s Adinath Sahakar Sarkari Kharkhana Ltd, Sholapur, Maharashtra.
Complete rewinding of stator and restaggering of stator with the old core due to lake of time and complete rewinding rotor with new field coils and rectifying the rotor field pole bolts to solve problem.
Complete rewinding of stator and restaggering of stator with the old core due to lake of time and complete rewinding rotor with new field coils and rectifying the rotor field pole bolts to solve problem.
Complete rewinding of stator and restaggering of stator with the old core due to lake of time and complete rewinding rotor with new field coils and rectifying the rotor field pole bolts to solve problem.
7.5MW 3000 RPM BTH make Turbo Generator’s rotor Client: M/s Ballarpur Industries Ltd,Jaipur, Orissa.
7.5MW 3000 RPM BTH make Turbo Generator’s rotor Client: M/s Ballarpur Industries Ltd,Jaipur, Orissa.
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Rewinding (VPI Scheme) of Stator & Rotor for 6 MW,1500 RPM 11 KV BHEL make Turbo Generator Client: M/s Varam Power Pvt Ltd, AndhraPradesh. Stripping out the damaged winding from both the stator & rotor
Rewinding (VPI Scheme) of Stator & Rotor for 6 MW,1500 RPM 11 KV BHEL make Turbo Generator Client: M/s Varam Power Pvt Ltd, AndhraPradesh. Stripping out the damaged winding from both the stator & rotor
Complete rewinding of Stator & is ready for VPI process
Complete rewinding of Stator & is ready for VPI process
Rewinding of Rotor under process
Complete cleaned rotor & ready for rewinding
Complete rewinding of Rotor & ready for VPI process
Complete rewinding of Rotor & ready for VPI process
Upgradation of (7.7-9) MW,3000 rpm 11 KV KALUGA (RUSSIA make) Client: M/s Bhagyanagar Solvents Extracts Ltd, Karnataka
Upgradation of (7.7-9) MW,3000 rpm 11 KV KALUGA (RUSSIA make) Client: M/s Bhagyanagar Solvents Extracts Ltd, Karnataka
Upgradation of (7.7-9) MW,3000 rpm 11 KV KALUGA (RUSSIA make) Client: M/s Bhagyanagar Solvents Extracts Ltd, Karnataka

16/20MVA, 132 KV/11KV, Bharat Bijlee make Power Transformer Client: M/s. Hindustan Petroleum Corporation Limited, Andhra Pradesh.

After complete rewinding of Transformer with New Electrolytic manilla paper covered copper conductor.

Taking out the Transformer Winding from the auto temp controlled oven, which was maintained at 800C.
After placing the Transformer Windings in the Tank and filtered Oil is filled at vacuum condition inside the Tank.

10/12.5MVA, 132 KV/11KV, NGEF make Power Transformer Client: M/s. Hindustan Shipyard Limited, Visakhapatnam, Andhra Pradesh.

Both LV and HV coils are inserted and the top core is to be placed.

 

Transformer is ready for assembling after complete rewinding and is inserted in the tank.
Transformer is ready for assembling after complete rewinding and is inserted in the tank.
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