TTPS ES Circle EM II Major overhauling of 2 Nos fan motors 5 Nos Mill motors and Annual preventive maintenance of 4 Nos fan motor 1 No Mill motor during unit I capital overhauling period of 2025 2026

Charges for the complete overhauling of FD Fan motor 6.6 Kv,1100 KW,1490 rpm as follows. Disconnection of power and control cable and measuring IR value of motor winding,Dismantling of the motor from the bed, transporting the motor to repair bay, opening the end covers and threading out the rotor, cleaning the stator and rotor with compressed air, kada cloth and petrol,Checking and tightening of all loose wedges in the stator winding by adding additional glass texolite liners and replacing all damaged wedges with new glass texolite wedges, pre heating the stator improve the IR value and make ready for high voltage test to ascertain the insulation deterioration value of stator winding, Varnishing the rotor and stator with Dr.Beck insulation, varnish, Threading in the rotor and assembly, erect the motor on bed, alignment of motor,inspection and blue matching the bearing if necessary,cleaning and overhauling the cooler and renewing of all bolts and gaskets, Replacing the wire mesh of the motor wherever necessary, checking PI value of the motor,conducting trail run of the motor,magnetic centre adjustment if necessary for the required coupling gap, painting the motor with two coasts of deep Orange enamel of Asian/British paint including cost of paint & consumables and hire charges and T&P etc.

Charges for the complete major overhauling of mill motor: Charges for the complete overhauling of 6.6 kV,320 KW,990 RPM mill motor with the description of work as follows.Removal of electrical connection and measuring the IR value of motor winding, dismantling the end covers, cooler fans and cooler, threading out the rotor, checking the bearing and changing if necessary, cleaning the rotor and stator with compressed air, gada cloth and petrol.Checking and tightening of all loose wedges, in the stator by adding additional glass textolite wedges, drying of stator by preheating and make ready for tan delta test to ascertain the reinsulation deterioration of stator winding inspection of rotor bars and end rings,varnishing the stator winding and rotor with Dr.Beck or equivalent insulation varnish, checking the IR values and resistance of stator winding, assembling the bearings with proper greasing, threading in the rotor, assembling of cooler and end covers etc., renewing of broken bolts and gaskets replacing the wire mesh of the end cover of the motor.Wherever necessary spray painting the motor with two coats of deep orange enamel paint.(Asian Bristish paint). Erection and fixing up of motor to the required alignment and coupling gap.Taking IR value, PI value and trial running of the motor, observing the vibration, temperature measurement etc. including cost of paint & consumables and hire charges and T&P etc.

Annual Preventive maintenance of ID-1A&1B and PA 1A&1B fan motor for the following works: Labour charge for the dismantling the cooler cover, cleaning the cooler tubes internally with wire brush and pull through and then with compressed air,assembling the cooler cover after inside painting and changing the gasket if necessary including the cost of consumables required except gasket and paint.(ID 2 Nos,FD-2 Nos & PA - 2 Nos.)

Charges for dismantling the end cover, checking and cleaning the end winding, cleaning the motor internally by compressed air,both the bearing cleaning and checking, blue match the bearing, Oil clearance measurement and changing the gaskets if necessary and make ready the motor for trial run during AOH period for ID/FD/PA Fan Motors.(PA-1 No) Including cost of consumable T&P hire charges.

Charges for dismantling the end cover, checking and cleaning the end winding, cleaning the motor internally by compressed air and changing the gaskets if necessary and make ready the motor for trial run during AOH period for ID/FD/PA Fan Motors.(ID-2 Nos & PA-1 No) Including cost of consumable T&P hire charges.

Charges for dismantling the power cable from the motor, checking the misalignment, align the motor with fan within the limit, checking the stator-rotor air gap and keeping the air gap within the limit and make ready the motor with required coupling gap for trial run during AOH period for ID/FD/PA Fan Motors.(PA-1 No.) Including cost of consumable T&P hire charges.(This work will be carried out based on site condition)

Charges for diamantling the power cable from the motor,checking the misalignment, align the motor with fan within the limit and make ready the motor with required coupling gap for trial run during AOH period for ID/FD/PA Fan Motors.(ID-2 Nos,&PA -1 No.) Including cost of consumable T&P hire charges.(This work will be carried out base on site condition

Preventive maintenance of 1 No Mill motor (Mill-1B) Charges for releasing of M.S Grill and Mill motor roof cover from frame and lowering to ground for removal of motor NDE cover and assembling of motor roof cover and M.S Grill after completing the motor cleaning works during AOH period of 320 KW Mill motor.Including cost of consumable T&P hire charges.

Charges for dismantling the cooler cover, cleaning the cooler, cleaning the cooler tubes internally with compressed air and then with wire brush and pull through, assembling the cooler cover after inside painting and changing the gaskets during AOH period of 320 KW Mill motor.Including cost of consumable T&P hire charges.

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