REPAIR/ MAINTENANCE OF TRANSFORMERS OF VARIOUS CAPACITIES AT TECHNICAL AREA AFS CHAKERI KANPUR

Amount

M&L for disconnection of defective transformer from power mains and dismantling the same from 2/4 pole structure/ platform mounted substation or AGE E/M store yard and transporting the same to authorised workshop and opening the transformer cover, draining out of transformer oil, assembling, removing of the burnt parts ie. tape, paper insulating strings etc gently and carefully, washing of the dust, rust and dirt from all parts including taking out HT/LT leg coil core tank and cooling tubes, welding and re-assembling after carrying out required repair and transporting back to site/MES store yard/ installation on existing 2/4 pole structure/ plateform with necessary fixing arrengement including connecting up electrically, commissioning and testing complete all as specified and directed for the following capacity of Transformer :-

(a) 63 to 250 KVA transformer

(b) 300 to 400 KVA transformer

(c) 500 to 630 KVA transformer

(d) 1000 to 2000 KVA transformer

(e) 3000 to 5000 KVA transformer

NOTE :- (i) The transformer shall be got repaired from authorised work shop of transformer. The contractor shall also produce test certificate as per IS-2026 alongwith high voltage test from the firms after repair. (ii) All the transformer shall be opened in presence of Engr- in- Charge/ rep of Engr-in-Charge to verify the various repairs/replacement involved and the transformer shall be assembled in the presence of Engr- in- Charge/his rep after necessary repairs/replacement. (iii) All the transformer shall be tested in the authorised workshop in the presence of Engr- in- Charge/ his rep, as per ser note No 1 above and also in addition the transformer where specified to be installed and commissioned on the 2/4 pole structure, platform and also shall be tested by the contractor in the presence of and as directed by Engr- in- Charge. (iv) All the testing arrangement shall be provided by the contractor without any extra payment. (v) The contractor shall also furnished a guarantee certificate himself and from the firm where the transformers are repaired by the contractor for rectification of the defects. If any defect noticed during liability period for 02 year from the certified date of completion and shall be rectified by the contractor under his own arrengment with no financial assistance from the deptt.

(vi) The above shall however does not absolve the responsibility of the contractor for rectification of any defect, if any noticed during guarantee period of 02 year as per condition 46 of IAFW-2249 and the contractor shall be solely responsible for entire completion of work and for rectification of the defect/replacement of items/parts and required pointed out by the GE during defect liability period of 02 year. Payment only for dehydration of the transformer oil and painting of the transformers replacement of certain items considered separately here- in- before shall only be made for separately. All other minor repair/replacement as required and ordered by the Engr- in- Charge for entire completion of work shall be deemed to be included in the unit rate of the above items. (vii) The contractor shall also clear the breathers. The unit rate quoted by the contractor shall included this aspect also. (viii) Contractor shall provide all arrangement for carefully handling/ transportation of equipment by means of crane/chain pully/recovery van and vehicles as per requirements and directed by Engr- in- Charge. (ix) Transformer oil tank rubberised 6.0mm thick gasket sheet pasted using gasket solvent, oil level gauge, drain valve, painting inner side tank by zinc chromate paint and outer side by approved paint included in this item rate. (x) The rate quoted by contractor shall include all these aspect. While quoting the tender, that quoted rate also include the provisioning of providing electric connection to exisiting system.

M&L for shifting of serviceable/unserviceable Transformer/RMU/VCB panel etc from one location to another location of capacity 63 to 1000KVA from existing PCC platform/ four pole/two pole structure/MES store yard and fixing on platform/four pole/two pole structure by suitable capacity of crane including necessary disconnection and connection on HT & LT side and testing on completion complete all as specified and directed.

Dismantling and segregation of HT/LT leg coil from transformer and making new HT/LT coil with insulated copper wire of required gauge craft paper cotton tape HT/LT insulation as per specification of old transformer including ovening & heating before assembling the winding core and necessary testing as required including takingout unserviceable winding complete all as specified and directed. (NOTE : Rewinding element related to this work includes guarantee for the period of 02 years from the date of completion).

Disconnecting HT & LT connection of any type & capacity transformera and opening of transformer cover at site for carrying out servicing testing/repair such as repalcement of intrnal/external damage parts and re-assembling after carrying out required repair in the transformers and testing complete all as specified and directed. (NOTE :- Parts replaced of transformer shall be measured and paid for separetly under respective items).

S&F in replacement of HT bushing complete with metal part, gasket set, nut, bolts and washers for any type of transformer at site /in workshop complete all as specified and directed for the following capacity :-

(a) 63 to 250 KVA.

(b) 300 to 400 KVA.

(c) 500 to 630 KVA.

(d) 1000 to 2000 KVA

S&F in replacement of LT bushing complete with metal part, gasket set, nut, bolts and washers for any type of transformer at site /in workshop complete all as specified and directed for the following capacity :-

(a) 63 to 250 KVA.

(b) 300 to 400 KVA.

(c) 500 to 630 KVA.

(d) 1000 to 2000 KVA

S&F in replacement of HT bushing rod (brass) complete with nuts, bolts and washers for any type of transformer at site /in workshop complete all as specified and directed for the following capacity :-

(a) 63 to 250 KVA.

(b) 300 to 400 KVA.

(c) 500 to 630 KVA.

(d) 1000 to 2000 KVA

S&F in replacement of LT bushing rod (brass) complete with nuts, bolts and washers for any type of transformer at site /in workshop complete all as specified and directed for the following capacity :-

(a) 63 to 250 KVA.

(b) 300 to 400 KVA.

(c) 500 to 630 KVA.

(d) 1000 to 2000 KVA

S&F in replacement of off load tap changer switch complete with rod and gasket for any type of transformer at site/in workshop complete all as specified and directed for the following capacity :-

(a) 63 to 250 KVA.

(b) 300 to 400 KVA.

(c) 500 to 630 KVA.

(d) 1000 to 2000 KVA.

S&F in replacement of oil drain valve for any type of transformer at site/in workshop complete all as specified and directed for the following capacity :-

(a) 63 to 250 KVA.

(b) 300 to 500 KVA.

(c) 630 to 2000 KVA.

Supply & filling in replacement De-hydrating breather with first fill of dehydrating agent (silica gel) complete all as specified and directed for the following capacity:-

(a) 63 to 250 KVA.

(b) 300 to 500 KVA.

(c) 630 to 2000 KVA.

S & F in replacement 100 mm dia, dial type thermometer, vapour pressure type having range 0-120 degree celsius with metal guard having maximum perimeter temperature reading indicator with re-setting device complete all as specified and directed.

Scraping and removing of worn out transformer oil tank gasket and supply& fixing new rubberized gasket sheet in the tank top cover, 6.0 mm thick and pasted using gasket cement, including fixing the top cover with conservator in the transformer complete all as specified and directed for the following capacities:-.

(a) 63 to 250 KVA.

(b) 300 to 400 KVA.

(c) 500 to 630 KVA.

(d) 1000 to 2000 KVA

Scrapping and removing of worn out gasket from LT and HT bushing and supply & fixing of rubberized gasket duly cut as per the size of bushing and pasted with gasket cement including cleaning and removing of carbon from HT/LT bushing, replacement of rubber oil seals, assembling the LT/HT bushing and fixing connection with terminals complete all as specified and directed for transformer of the following capacity:-

(a) 63 to 200 KVA.

(b) 250 to 315 KVA

(c) 400 to 500 KVA.

(d) 630 to 2000 KVA.

M&L rubberized gasket (cork sheet) for top cover, LT terminal box LT/HV bushing washer, spindle etc suitable complete all as specified and directed for following capacity of transformer:-

(a) 63 to 200 KVA.

(b) 250 to 315 KVA

(c) 400 to 500 KVA.

(d) 630 to 2000 KVA.

M&L for replacement of fresh silica gel of superior quality for air breather of transformer complete all as specified and directed.

S&F in replacement of oil level indicator glass for any type/ capacity of transformer complete all as specified and directed.

Rectifying and arresting the oil leakage of transformer of any capacity, disconnection of HV/LV ends, opening the top cover by using tripod, chain & pulley after removing of all fitments, replacing the components of the transformer such as gasket 'O' rings etc. Rectify the leaks in a variety of areas such as radiator fins, flanges, valves, fastener assemblies, oil leakage through pin hole/ crack joint, drain valve, radiator valve, oil leakages through gasket joint etc complete.Repair leakage by 'M' seal Monoplast where ever necessary including welding/ Brazing, testing complete. Refixing the top cover and all fitments, HV/LV connection and testing complete all as specified and directed .

M& L for dismantling of transformers indoor/outdoor type complete, opening top cover by unscrewing nuts, bolts, unserviceable HT/LT coil of transformer, gaskets, bushing core tap changer, draining out transformer oil and keeping safely for reuse after filtration, cleaning the inner body with caustic soda/detergent and washing to removing sludge etc, painting the inner side tank by Zinc chromate paint and preparing the same for reassembling complete all as specified and directed of following capacity :-

(a) 63 to 250 KVA transformer

(b) 300 to 400 KVA transformer

(c) 500 to 630 KVA transformer

(d) 1000 to 2000 KVA transformer

S&F in replacement of aluminium strip of size as per site requirement 20 to 25 cm long on LT side of transformer at site duly drilled holes for transformer studs & LT cable fixed with GI bolts nuts & washers of appropriate size complete all as specified and directed of following capacity of transformers :-

(a) 63 to 300 KVA transformer

(b) 315 to 500 KVA transformer

(c) 630 to 2000 KVA transformer

Supply & fixing Aluminium lugs for HT bushing of suitable size by means of using crimping tool after removing existing unserviceable lugs for the any type/ capacity of transformers complete all as specified and directed.

Supply & fixing Aluminium lugs for LT bushing of suitable size by means of using crimping tool after removing existing unserviceable lugs complete all as specified and directed for the following capacity of transformers :-

(a) 63 to 250 KVA transformer

(b) 300 to 400 KVA transformer

(c) 500 to 630 KVA transformer

(d) 1000 to 2000 KVA transformer

Supply and filling & topping up of transformer oil at site having dielectric strength 40 - 60 KV during filling after initial filtration conforming to IS-335. Transformer oil shall be supplied in sealed container and empty barrel of transformer oil will be deposited by contractor in E/M store yard complete all as specified and directed. Make :- HP, BPL, IOC, SAVITA or equivalent as approved by GE. (NOTE : Before topping up transformer oil sealed container shall be got checked at MES store yard).

Dehydration/ filtration of transformer oil of existing transformer installed at site with portable plant to improve the dielectric strength 50 to 70 KV including top up transformer oil upto the level complete all as specified and directed. (Note:- (i) Conducting field testing of di-electric strength and acidity test of Tr. Oil to be carried out with acidity test kit before and after filtration. (ii) Transformer oil required for top up shall be measured and paid separately. (iii) The Contractor shall arrange his own the electric power rquired for testing/ de-hydration if required.

M&L for painting of transformer indoor/ outdoor on plinth/ pole/ in workshop with one coat of synthetic enamel paint with compressor spray Gun after removing all dust, Rust, paint shall confirmed to IS-2032 and writing SM & MES No with letter not less than 50mm with white paint on location complete all as specified and directed for following capacity of transformer ;-

(a) 63 to 250 KVA transformer

(b) 300 to 500 KVA transformer

(c) 630 to 2000 KVA transformer

Supply and fixing in replacement of gun metal gate valve , ISI marked suitable for oil inlet/outlet valves of transformer of following sizes complete all as specified and directed.

(a) Gate valve 25 mm dia bore

(b) Gate valve 32 mm dia bore

(c) Gate valve 40 mm dia bore

(d) Gate valve 50 mm dia bore

Supply & Fixing breather for Power transformer of size 5 MVA,33/11KV complete with blue chips silica jel complete all as specified and directed. Make - As per sample.

Supply & Fixing breather of Power transformer of size 3.15 MVA,33/11KV complete with blue chips silica jel complete all as specified and directed. Make - As per sample.

Supply & Fixing 33 KV bushing of HV side as per existing size/Model of the capacity up to 5 MVA transformer complete all as specified and as directed.

Supply & Fixing 33 KV bushing of LV side as per existing size/Model of the capacity up to 5 MVA transformer complete all as specified and as directed.

Supply & Fixing buchholz relay as per existing size/Model suitable for transformer up to 1600 KVA transformer complete all as specified and as directed.

Supply & Fixing buchholz relay as per existing size/Model suitable for transformer up to 2000 KVA transformer complete all as specified and as directed.

Supply & Fixing buchholz relay as per existing size/Model suitable for transformer up to 3.15 to 5 MVA transformer complete all as specified and as directed.

Disconnecting and taking out existing unserviceable current transformer of any description and in any position and Supply, installation, commissioning and testing of oil cooled, out door type 33 KV current transformer having ratio of 300-150/5+5+1 A having protection core class 5P10, burden of 15 VA and metering core class 1.0 and burden of 15 VA breaking cap of 13.1 KV for 1.0 second complete all as specified and directed. (Make: Jyoti / Skipper / Kappa / ABB /Crompton greaves as approved by GE).

Supply, insatallation, testing and commissioning in replacement of isolator 33KV, outdoor duty isolator, hand operated triple pole, off circuit, fault making, horizontal/ vertical mounted,18 insulator type, centre post rotating type, double stac, 33 KV, 400 Amps, as all as specified in particular specification and as per IS-9921 including taking down old unserviceable isolator complete all as specified and as directed. (Make:-Rashtriya/Jaipuria as equivalent as approved by GE).

Taking shut down and earthing the system to carry out repair to off load rotating type 33 KV upto1600 Amp and alignment of isolators, blades, arcing horns moving machanism oiling greasing to isolators gear box assembly, tightening, replacement of nut and bolts, repair to isolator circuit wiring testing commissioning complete all as specified and directed.

Supply & Fix of metallic (brass, alloy) fixed contact set single pole including fixing screwed nuts and washers suitable for air break gang operated switch of cap upto 1600 amp 3 pole 33KV volts grade complete all as specified and directed. (Make :- As per sample kept in GE's office).

Supply & Fix of metallic (brass, alloy) moving contact rod (blades) set single pole including fixing screwed nuts and washers suitable for air break gang operated switch of cap upto 1600 amp 3 pole 33KV volts grade complete all as specified and directed. (Make :- As per sample kept in GE's office).

Supply & Fix of metallic (brass, alloy/steel) arcing horns set single pole including fixing screws, nuts and washers suitable for air break gang operated switch of cap upto 1600 amp 33KV volts grade complete all as specified and directed. (Make :- As per sample kept in GE's office).

Supply & fix of GOD operating handle rod with cover 33 KV grade insulation including hand glove and locking arrengement with 65mm pad lock (Godrage) with two keys complete all as specified and directed.

Supply & fix of post insulator with GI post for holding fixed/moving contact assembly including fixing arrangement suitable for Air break gang operated switch upto 1600 Amps 33KV volts grade complete all as specified and directed.

Supply & fix of metallic (brass, alloy) CT,PT, isolator & LA PG clamps having capacity 33000 volt suitable for painther/zebra/Dog ACSR conductor including fixing screwed nuts and washers complete complete all as specified and directed. Note : - The contractor shall visit the site to check the existing CT,PT, isolator & LA clamp of 33 KV before installation.

Disconnecting of HT supply from 11KV HT panel board/RMU of any capacity and size for over hauling/ repair/re-wiring works, servicing and taking out trolley. Dismantling carefully and replacing defective parts found at the time of servicing complete with decarburizing the contact points, cleaning with CRC solution etc including calibration of relays for tripping time setting over current setting, earth fault setting and testing of panel with the help of primary injection test set for protection CT after repair complete all as specified and directed.

Supply and fix first Aid Box with medicine complete all as specified and directed.

Supply & fix shock treetment chart board with plastic coated and aluminium frame complete all as specified and directed.

S & F lightning arrester Zinc Oxide type complete with all fittings transmission class discharge capacity 65KA suitable for 33000 V including taking down old unserviceable lightning arrester complete all as specified and directed. (Make :- M/s Oblum, M/s BHEL, M/s GEC Elpro, C&G, AREVA , M/s Atlas, M/s Rashtriya, M/s Elpro, M/s Jaipuria as approved by GE).

Scraping, cleaning and preparation of old surfaces of steel tubular pole including MS structure (any size), channels of HT 2/4 pole structure, steel fitting complete and M&L for painting with two coat for aluminium paint after preparation of the steel surfaces and then applied strap with two coats blue & white paint in strap alternatively all round the poles from the bottom of the pole for indication of the poles. Height of the strap shall be 30 cm and number of strap shall be 05 Nos.

M&L painting of steel structure surfaces of CT, PT, LA, SF-6 & isolator, DO etc such as columns, bracing, gantary MS channels, angle iron of any size and shape with two coats of synthetic enamel aluminium paint after preparation of old painted surface complete all as specified and directed. (Make of paint : Berger paints (Luxol)/ Asian paints (Apcolite)/ ICL paints (Dulux).

Material & labour for preparation of old painted steel surface of any description over 10cm width or girth and applying one coat of synthetic enamel paint of approved colour of 33KV sub stn fencing fixed arround the yard complete all as specified & directed. Note for item No 48 & 49 : - The contractor has to visit the site to check the existing CT,PT, isolator, LA, transformer structure for painting of 33 KV sub station.

Cutting of worn out aluminium cable terminal lugs from the HT/LT cable, crimping of new aluminium cable core, lugs suitable size and fixing with transformer, terminal stud including cutting/dressing of cable, excavation surface after providing redressing of excavated surface after providing sand cushioning and brick protection complete all as specified and directed

Dismantling and taking out of wheel 04 Nos from trolley mounted transformer and providing 04Nos jack inside of trolly for support and taking out old damage cover outer and inner from rim carefully and repair inner & outer cover and fill proper air including fixing in trolly welding of angle iron frame at junction point including scraping/ burning old paint through blow lamp and cleaning through kerosene oil after that two coat of red oxide primer on metallic body of trolly and over two coat synthetic enamel paint black gray and red inside and outside of trolley, rim and base plate complete all as specified and directed

M&L 33/11KV Power Transformer control panel testing of WTI, OTI, buchholz relay, outdoor CT, PT and relay cordination setting of any type and capacity with the help of primary injection kit complete with cheking of control cable and properly connection complete all as specified and directed. Note :- Contractor will submit primary and secondary test record at the time of cordination of breaker relay, TR control panel duly signed by the technical rep of manufacturer/authorised dealer to Engineer in Charge. The rate quoted by tender shall deemed to include the cost of this provision incl T&P required for injecting regulated high current.

Supply and errect fire stand of suitable size made out of 50x5mm thick MS angle iron/ chanel duly painted with two coats of synthetic enamelled post office red colour over a coat of red oxide as primer and lettering with white paint including providing the following complete all as specified and directed:- (a) Step type structure standard size with PCC, plastering and brick work complete. (b) Galvanised MS fire buckets 9 litre capacity - 04 No's (c) Portable fire extinguisher CO2 type 4.5 Kg capacity - 04 No's (d) Fire hook - 01 No (e) Fire bitter - 01 No. Make:- Ceasefire / Firex/Omex (ABC)

S & F in replacement of power transformer OTI & WTI meter including necessary connection, testing complete all as specified and directed

S & F in replacement of 33 KV single phase out door oil cooled PT of ratio 33KV/ √3 / 110 V/√3 class 0.5 - 3 . Burden 200 VA. Insulation class 70/170 KV , voltage fector 1.2 cont and 1.9 for 30 sec , confirming to IS : 3156 complete all as specified and directed

S & F of copper strip 32 x 6 mm for extension of earth and connected to transformer/equipment or panel with proper clamp,saddle,nuts,bolts and washers etc properly complete all as specified and as directed.

M&L Earthing complete with copper earth plate electrode 600mm x 600mm x 3.15 mm thick buried directly in ground (earth pit not less than 3.75 M deep below normal ground level) with top edge of the plate not less than 3.15 M below normal ground level, connected to copper earth strip 32 x 6mm by means of bolts, nuts, check nuts and washers of galvanised iron including necessary excavation and earth work ,PCC pit chamber in PCC (1:3:6) type C-1 using 20 mm graded aggregate with 50 mm thick pre-cast RCC cover in (1:2:4) type B-1 using 20 mm graded stone aggregate, reinforced with 8 mm dia bar@75mm c/c both way with two Nos lifting handles of 12 mm dia mild steel plain bar, funnel with wire mesh, lugs, 50mm dia galvanised iron protection pipe light grade ,watering pipe of size 20 mm dia galvanised iron light grade, main Earthing strip upto 7.5M including charcoal dust, common salt etc all as shown in electrical plate No. 3 of SSR Part-I 2009 including testing on completion complete all as specifed and as directed. (Note :- (i) The excess requirement (if more than 7.5 Mtr) of copper strip will be measured and paid separately. (ii) The excavation exceeds if any of the note (i) above will be deemed to be included in this item rate.

M&L Earthing complete with GI earth plate electrode of size 600 mm x 600 mm x 6 mm thick buried directly to ground vertically to a depth not less than 2.25 Mtr below the ground level with top edge of earth plate not less than 1.5 Mtr below normal ground level connected to GI strip 32mm x 6 mm as earthing lead protected with 50mm dia light grade GI pipe, filling around with charcoal dust and salt including excavation, returning filling of earth work and disposal of surplus soil to a distance not exceeding 50 mtr and connected to GI strip by means of GI nuts, bolts and washers strip connected to earth plate including chamber PCC 1 : 3 : 6 type C-1 using 20mm graded stone aggregate and pre cast RCC cover 40 mm thick reinforced with 6 mm dia round at the rate of 75 mm C/C both way with 12 mm dia mild steel plain bar lifting handle 2 Nos funnel with wire mesh, 20 mm dia GI pipe light grade watering pipe and framework complete all as specified and as directed. (Note:- GI strip above 7.5m length shall be measured & paid separately.

S&F Galvanised iron strip 32 x 6 mm for extension of earth and connected to equipment or panel complete all as specified and as directed .

S & F in raplacement of insulating mat suitable for 11 KV having daimentions of 2M x1M x 25mm complete all as specified and directed.

Bharat Sales Corporation

Kumar Electricals