Tamil Nadu Generation And Distribution Corporation Limited Tender

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Tamil Nadu Generation And Distribution Corporation Limited - TANGEDCO Tender

Works
Electrical Generators And Transformers
Electrical and Electronics
Eprocure
Opening Date12 Jun 2024
Closing Date26 Jun 2024
Tender AmountRefer Documents 
Notes
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Costs

Description

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Sleeving the NDE bearing housing to suit the OD of new bearing.

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Sleeving the DE bearing housing to suit the OD of new bearing.

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Dismantling the terminal box of power supply side and CT side and providing new silicon cable for CT side and motor power supply side take off lead and providing of 18 metre length of 70 sq. mm Silicon insulated Fiber Glass sleeved flexible Copper cable, crimping and bracing at motor end & CT end, crimping with 70 sq. mm lug at terminal end and assembling the terminal box of the motor & star side in its original position (including drilling and provide tapping for fixing up of bolts to fix the terminal box).

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ROTOR-RE-BARRING: (IF REQUIRED OPTIONAL) Charges towards rebarring of rotor having 130 bars by mounting the rotor in the lathe, machining both side end ring, stripping out the bars in bar removing machine using special tools and machineries, machining the rotor bars & 2 Nos. end rings made out of electrical conductivity grade copper using copper bars & copper end rings, inserting the rotor bars using special tools and machineries, positioning, locking, machining both side rotor bars for proper bedding of bars.

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ROTOR-BAR-Brazing:Charges towards brazing the bars and end rings using silver brazing rods, flux & oxy-acetylene gas and thermal protection materials, conducting the healthiness of the brazed joints before and after machining the excessive materials, cleaning, dip varnishing the rotor with class F varnish, baking, applying finishing varnishes to the overhang portions.

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ROTOR CORE RESTACKING:Charges towards mounting the rotor in the lathe, machining the lock welding ,shifting the rotor to hydraulic press removing the core locks, lifting the core one by one with special fixtures, segregating the damaged rotor core from core pack, removing the old burnt core plate varnishes by chemical treatment, cleaning, removing the surface kinks, varninshing the stampings in re-varnishing cum conveyor oven to cure the core plate varnish, staggering the core with special tool and machineries, locking and repositioning the core pack to the rotor shaft ,welding the locks in hydralic press and finally conducting the flux loop test to ascertain the restacked core healthiness, cleaning and polishing the slots ready to feeding (inclusive of all materials and labour charges)

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Dismantling of drive end bearing by using hot oil bath, if necessary, checking the new bearing, heating the bearing by using hot oil bath and inserting it on the shaft. (Necessary bearing will be supplied by the TANGEDCO Ltd., at free of cost).

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Dismantling of non-drive end bearing by using hot oil bath, if necessary, checking the new bearing, heating the bearing by using hot oil bath and inserting it on the shaft. (Necessary bearing will be supplied by the TANGEDCO Ltd., at free of cost).

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Dynamic balancing of Rotor of HT Motor of 1050 KW Vertical type Cooling Water Pump.

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Assembling the stator and rotor and assembling of half coupling, lifting to vertical position, painting and transporting the assembled motor to Cooling Water Pump House repair bay.

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Dismantling of motor fan cover, removal of damaged metal mesh by gas cutting and welding with fresh metal mesh, painting and assembling of fan cover. (Required Metal Mesh to be arranged by the Contractor, at his Cost).

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Transporting charges both ways for 1050KW,6.6KV,CwPH motor 14 Ton capacity

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