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Tender For corrigendum : custom bid for services - esp hv rectiformer repair at nspcl bhilai ppii - work includes fault finding, repairing, overhauling, testing and replacement of the items as described below for the said transformer to make it functional in all respects. 1)hv winding: preparation of new set of coils as per existing winding and insulation class as per requirement. coils should be made with electrolytic grade new copper. rewinding of hv winding with the new coils. 2)lv winding: repair/re-insulation of lv winding after removal of old insulation. proper annealing of old copper to be done before starting re-insulation job. 3)providing fresh inter layer insulation. 4)providing and fixing new insulation supports of fiber reinforced (frp) wherever missing /damaged. original dimension must be maintained. bakelite materials are to be replaced wherever necessary. 5) sundry items like cotton/glass tape, varnish, bakelite sheets, silica gel, tube, nuts and bolts etc. required for repair are to be supplied by the vendor. however, scrap generated out of these works will be kept by the vendor. 6) complete re-insulation of ac reactor. 7) hv & lv bushings of wsi make or equivalent are to be provided by the vendor. 8) dismantling of defective core and preparation of new transformer core if required. material will be supplied by the vendor. 9) new high voltage resistance column (hind rectifier/ bharat electronics/ ador make) is to be supplied by the vendor. 10) rectifier diode bridge (hind rectifier/ bharat electronics/ ador make), feedback diode stacks are to be replaced by the vendor. 11) studs coming out from the lv bushings for lv cable termination needs to be replaced if threads found damaged. 12) there should be no oil leakage from any part of the transformer after assembly and filling of oil. 13) any unspecified works, to make the transformer more reliable has to be done by the vendor i. works to be done/ items to be replaced: i. replacement of gaskets of suitable thickness at all flanges, joints, top covers with rc-70c grade anchor cork make or equivalent by the vendor ii. all fasteners are to be replaced by the vendor (with gi material). iii. all hv, lv and control bushings oil seals are to be replaced with new ones by the vendor iv. silica-gel breather of capacity 0.5 kg is to be replaced with new one with new silica-gel v. replace view glass/ gasket of the oil conservator. the oil level should be clearly visible in the oil tank gauge glass. vi. oti (precimeasure or equivalent make) and buchholz relay (make- sukrut or equivalent) shall be replaced by the vendor. vii. transformer will be sent with oil filled. if any top up is required at vendor's works will be in scope of vendor. the oil to be used for top up shall be of new ehv grade transformer oil (as per is: 335) with minimum 50kv bdv value and maximum moisture content 15 ppm. after completion of repair job, filtration of complete oil has to be carried out for achieving oil parameter of minimum 50kv bdv value and maximum moisture content 15 ppm. vii. painting inside the tank with epoxy paint and outside with synthetic enamel paint with colour code ral 5012 is to be done. ii. tests to be conducted: i) hot spot test of core at rated amp-turn after removal of all windings. ii) resistance & inductance measurement of all windings. iii)ratio test. iv) induced over voltage test as per is 2026 (part iii) 1981. v) short circuit test. vi) no load current and loss test. vii)insulation resistance test, pi value before and after above tests. viii) bdv of oil as per relevant is code and standard. ix) high voltage test on hv winding as per is 2026 (part iii) 1981. x) voltage and current feedback circuit rectification /calibration and testing up to transformer terminal block
Tender For supply of magnifying glass with stand, lens size- 5", magnification- 4x area, 3.2 dioptre lens, reach- stand i nternal concealed, spring mechanism with 900 mm reach from pivot and 600 mm in vertical plane reach from pi vot 36" and 600 mm in vertical plane 24", illuminationi) i) led ring with 40 leds in twin rings.) ii) power consump tion- 8 watts. iii) lumen output- 800lumens. iv) colour temperature- 6000 degree kelvin v) nominal lux level at working plane 150 mm- 2300 lux. along with accessories for each stand. i) increased magnification attachment dia -50 mm powerful additional lens that can swiung in the field view under the main lens. ii) spot lens dia- 30 m m powerful additional lens that is permanently fused on the main lens to provide 16 x area magnification. brand- lensel optics model no-l104sd / greemito/ toolstar [ warranty period: 30 months after the date of delivery ]
Tender For supply of mmv equipments - allen key set of twelve pieces , calliper inside with spring , callipers outside with spring , center punch , dividers with spring , electrician screw driver , hammer ball peen with handle , hands file for second cut flat , philips screw driver set of 5 pieces , pliers combination , screw driver blade , scriber , spanner de set of 12 pieces , spanner ring set of 12 , spanners socket with speed handle tbar ratchet and universal set of 28 pieces with box , steel rule , steel tool box with lock and key folding type , wire cutter and stripper , adjustable spanner pipe wrench , ac alternator slip ring puller , air blow gun with standard accessories , ammeter dc with external shunt , air ratchet , air impact wrench , anvil with stand , auto electrical test bench , battery charger , blow lamp , belt tensioner gauge , car jet washer with standard accessories , chain pulley block capacity with tripod stand , chisel flat , circlip pliers expanding and contracting , cleaning tray , compression testing gauge , copper bit soldering iron , cylinder bore gauge capacity , depth micrometer , dial gauge type 1 gr a complete with clamping devices and with magnetic stand , different type of engine bearing model , different type of piston model , drift punch copper , drill twist various sizes , electric soldering iron , electric testing screw driver , engineers square , engineers stethoscope , feeler gauge 20 blades metric , file flat bastard , file half round second cut , file square second cut , file square round , file triangular second cut , files assorted sizes and types including safe edge file twenty nos , flat file second cut , flat file bastard , fuel feed pump for diesel , fuel injection pump diesel inline , fuel injection pump ve pump distributor fuel rotary pump dpc pumps along with special tools and accessories , grease gun , growler , hacksaw frame , hammer ball peen , grease gun , growler , hacksaw frame , hammer ball peen , hammer chipping , hammer copper with handle , hammer mallet , hammer plastic , hand operated crimping toolwire , hand vice , hollow punch set of seven pieces , injector multi hole type pintle type , insulated screw driver , magneto spanner set with 8 spanners , magnifying glass , multimeter digital , oil can , automotive oil pump for dismantling and assembling , outside micrometer , philips screw driver set of 5 pieces pozidrivandtorx drive , piston ring compressor , piston ring groove cleaner , pliers flat nose , pliers round nose , pliers side cutting , portable electric drill machine , prick punch , punch letter 4mm number , radiator pressure cap , scraper triangular , scriber with scribing black universal , set of stock and dies metric , sheet metal gauge , spanner t flocks for screwing up and upscrewing inaccessible , spanner adjustable , spark plug spanner 14mm x18mm x size , starter motor axial type pre engagement type and coaxial type , steel measuring tape in a case , steel rule 15 cm inch and metric , straight edge gauge 2 ft , stud extractor set of 3 , stud remover with socket handle , surface gauge with dial test indicator plunger type , tachometer counting type , thermostat , thread pitch gauge metric , turbocharger cut sectional view , tyre pressure gauge with holding nipple , universal puller for removing pulleys bearings , v block 75 multiplied by 38 mm size pair with clamps , vacuum gauge , valve lifter , valve spring compressor universal , vernier calliper , vice grip pliers , automotive water pump for dismantling and assembling , wire gauge metric , work bench , alternator assembly used for lmv , carburetor solex mikuny for dismantling and assembling , chain pulley block 3 ton capacity with tripod stand , cut section model of mock layout of a motor car electrical system working model , cut section models of shock absorbers , cut section of cross ply and radial tyres , cut section working model of automatic transmission gear box , cut section working model of centrifu