REPAIR/REWINDING OF 1000 KVA TRANSFORMER INCLUDING CONNECTED ACCESSORIES AT DEF LAB JODHPUR.

Amount

M& L for disconnecting carefully electrical connection from HT/LT sides of the transformer keeping them at safe side and taking out the transformer indoor type 1000 KVA,11 / .433KV step down/step up any make carrying out complete overhauling which shall complete of the following :- (a) Material & Labour for lifting, transporting, handling the transformer to workshop (within 40 km ) and opening top cover of the transformer by unscrewing nuts, bolts,washers etc including disconnecting core assy from HT/LT bushing and lifting the same gently and taking out from the shell (container/body) of the transformer.(b) M&L for draining out transformer oil from the above said transformer in the suitable capacity of container/drums and keeping it in safe custody for reuse. (c) M&L for cleaning of the transformer body from inside, removing deposited dirt/sludge/foreign particles etc from the bottom/body of the transformer and drying/heating up the shell from inside before refilling of the transformer oil.(d) Cleaning/washing through core and windings of the tansformer by hosing down with clean dry oil conforming IS 335/983,removing deposited dirt sludge/foreign particles from the windings/core and revarnishing of the windings with super varnish including heating/drying/packing complete carefully and throughly inside the heating chamber at suitable temperature to obtained required value of insulation resistance etc all as per IS and directed by Engr-in-charge (e) Lifting and refixing core assy inside the transformer shell gently and carefully,connecting of HT/LT/Neutral connections to the bushings assy,fixing of the tap change over incl tightenting of nut,bolts,washers of the core to reduce humming noise all as directed. (f) Refilling the transformer oil in the shell of transformer only after carrying out filteration by heating upto oil 105 degree certigrade to active reqd dielectric strength and submitting the test result before and after filteration of oil in presence of Engr-In-Charge on proper performa duly signed.(g) Refixing the top cover including cork sheet/gasket ,tightenting of nut bolt,washers etc all as directed by Engr-In-Charge.(h) Lifting/shifting to the place from where removed and reinstalling the transformer including connecting HT/LT/Neutral/Earthing connections etc all as directed by Engineer-in-charge.

Note:- (i) Any damage to insulator/bushes/ windings etc while in the custody of the contractor shall be made good at no extra cost to govt.The serviceability of the transformer shall be checked and confirmed by the contractor before taking into his custody. (ii) Rewinding / re-insulation of winding of HT/LT coil will be paid seperately under relavant item of sch.

Supply and replacement of HT/LT coils made out of super enameled T copper winding wire of transformers capacity 1000KVA. (Note:- the coil to be replaced shall have same number of turns gauge, insulation value matching with manufacture, design) Make: ATLAS/BIC/gec.

Supply and replacement of HV/LV bushing suitable for indoor/outdoor type 1000KVA transformer complete with brass stud,brass nuts, brass cup and packing gasket complete all as spd and directed, Make: ATLAS/BIGEC.

Supply and replacement of HV/LV Metal Parts suitable for indoor/outdoor type 1000KVA transformer complete with brass stud,brass nuts, brass cup and packing gasket complete all as specified and directed by Engineer-in-charge Make: ATLAS/BIGEC.

Supply and replacement of gasket and sundry items suitable for trasformer 1000KVA complete all as specified and directed by Engineer-in-charge.

Supply and topping up transformer oil of approved quality ISI marked for filling in transformer complete all as specified and directed by Engineer-in-Charge. Note:- (i) The rates quoted by the contractor deemed to include changing and testing for dielectric strength.

Material and labour, painting of transformer indoor/outdoor type with smoke gray color synthetic enamel paint in one coat over the existing paint after cleaning and removing the durt and cleaning with sand paper complete including writing SM Nos and MES No on transformer body with letters 100 mm high with white synthetic enameled paint complete for transformer of capacity 1000 KVA all as specified and as directed by Engineer-in-charge.

Supply and replacement transformer breather complete with silcagel for capacity 1000KVA complete all as specified and directed by Engineer-in-charge

Supply only silica gel for breather of transformer of any type/capacity complete all as specified and directed Engineer-in -Charge.

M&L XLPE insulated/,screened,PVC bedded,galvanised steel strip or wire armoured heavy duty elelctric cable with aluminium stranded conductor 11000 volts (tearthed) / graded cross sedction area 240 sqmm 3 core complete all as specified and directed by Engineer-in-charge. (Note:- This item also includes laying of cable through the duct )

M/S RAKESH CHOUDHARY