SPL REPAIR TO 01 X 5 MVA TRANSFORMER 33/11 KV AT NEW MRS UNDER GE E/M LUCKNOW

Amount

Disconnecting all electrical connections from defective 5 MVA power transformer, 33/11 KV copper wound at New MRS and dismantling the components of transformer for easly loading, making the transformer air tight, packing , lifting of transformer from foundation smoothly and loading to vehicle and transport to repair workshop , unloading at repair worksop and transported back to New MRS after repair , installation, comissioning and testing complete all as specified and directed by Engr-in -Charge. Make of Existing Transformer : Kirloskar Note:-(i) Any damage during transportation/loading/unloading or at any stage occured contractor shall be responsible for that and damage shall be made good by the contractor. (ii) Transit insuarance shall be made by the contractor before despatch of power transformer and necessary documents shall be submitted by the contractor rates of the same shall deemed to included in the quoted rate. (iii) Rate shall be deemed to inclusive of transportation, T&P and men power charges.

M&L for opening the top cover of transformer and carrying out the folowing work/repairs by speacialist technician/engineer at factory work shop :- (a) Removing of transformer oil from transformer into seperate container. (b) Taking out the core and coil of transformer. (c) Repair of radiator & replacement of defective plate of core as per existing size. (d) Cleaning the transformer inside properly by used transformer oil as per manufacturers guide line and painting with one coat zink painting as per manufacturers norms. (e) Re-tanking and assembling of core and coil. (f) Ovening in vapour phase drying oven at factory workshop for 72 hrs. (g) Filling of new transformer oil. (h) Replacment of gaskets, hardware/consumables, replacement of silica gel breather, replacement of winding temprature indicator gauge , oil temprature indicator gauge , replacement of magnetic type oil level gauge , replacement of HV/LV spindles , replacement of taping switch etc of transformer. Contd/-

Contd/-... (i) Refixing of the transformer top cover with ,gasket, nuts, bolts and washers. (j)) The following routine test as per IS 2026 (Part I) -1977 shall be carried out at repairing workshop having NABL Lab accredition and valid calibration of test equipments :- (i) Measurement of winding resistance. (ii) Measurement of voltage ratio and check of voltage vector relationship. (iii) Measurement of impedance voltage/short circuit impedance (principal tapping) and load loss . (iv) Measurement of no load loss and current. (v) Measurement of insulation resistance. (vi) Dielectric tests (k) The contractor shall give written warranty of one year from the date of sucessfull testing and installation of transformer. The contractor shall submit test report from repair workshop for above mentioned test. Note:- (i) Transformer oil, Gasket, Silica gel breather , WTI, OTI, Temp indicator gauge, Megnatic type oil gauge , HV & LV Spindles & taping switch shall be measured and paid separately under respective items of schedule as supply only.

M&L for replacement of HV leg copper strips/coil with new copper strips/coils with new tripple paper cover (TPC) as per specification of copper conductor for 33/11 KV transformer of capacity 5MVA & matching with existing gauge and same number of turns including best quality insulation, varnishing by vaccuum impregnation and baking of coil assembly complete all as specified and directed to achieve designed voltage ratio all as per manufactures instruction complete all as specified and directed.

M&L for replacement of LV leg copper strips/coil with new copper strips/coils with new tripple paper cover (TPC) as per specification of copper conductor for 33/1 KV transformer of capacity 5 MVA & matching with existing gauge and same number of turns including best quality insulation, varnishing by vaccuum impregnation and baking of coil assembly complete all as specified and directed to achieve designed voltage ratio all as per manufactures instruction complete all as specified and directed.

Supply only transformer oil as per IS 335/93 dielectric strength should be upto 60 KV breaking voltage complete all as specified and directed.

Supply only gasket/hardware/consumables during the rectification work for 5 MVA, 33/11 KV transformer at Workshop complete all as specified and directed.

Supply only new silica gel breather unit for 5 MVA , 33/11 KV transformer complete all as specified and directed.

Supply only new winding temperature indicator gauge with trip and alarm contacts for 5 MVA, 33/11 KV transformer complete all as specified and directed.

Supply only new oil temperature indicator gauge with trip and alarm contacts for 5 MVA,33/11 KV transformer complete all as specified and directed.

Supply only new magnetic type oil level gauge for 5 MVA,33/11 KV transformer complete all as specified and directed.

Supply only new LV spindles (metal part) of brass with nuts and washers for 5 MVA, 33/11 KV transformer complete all as specified and directed.

Supply only new HV spindles (metal part) of brass with nuts and washers for 5 MVA , 33/11 KV transformer complete all as specified and directed.

Supply and fixing taping switch complete with handle for 5 MVA, 33/11 KV transformer complete all as specified and directed.

Unnati Engineers

BHATIA ENTERPRISES