REPAIR OF POWER TRANSFORMER INCLUDING ALLIED WORKS AT BHAGAT LINE AREA UNDER AGE E/M (ES) AT GE (U) MEERUT CANTT

Amount

M&L for disconnecting 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 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 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/ platform with necessary fixing arrengement including connecting up electrically, commissioning and testing all as directed by Engr- in- Charge for the following capaity of Transformer :-

63 to 315 KVA transformer

400 to 630 KVA transformer

5000 KVA Transformer

NOTE :- (i) The contractor shall produce test certificate as per IS-2026 alongwith high voltage test from the firms after repair. (ii) To accertain the fault of transformer at installed location, the transformer will be tested with HT 10KV magger, multimeter in the presence of AGE E/M/JE E/M. All T&P required like HT magger 10KV, multimeter and cables will be arrenged by contractor. (iii) All the transformer shall be opened in presence of Engr- in- Charge/ his rep veryfy the various repairs/replacement involved and the transformer shall be assembled in the presence of Engr- in- Charge/his rep after necessary repairs/replacement. (iv) All the transformer shall be tested in the factory 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 Engr- in- Charge. (v) All the testing arrangement shall be provided by the contractor without any extra payment. (vi) The contractor shall also furnished a guarantee certificate himself for rectification of the defects. If any noticed defect during liability period for 01 year from the certified date of completion. (vii) The above shall however does not absolve the responsibility of the contractor for rectification of any defect, if any noticed during guarantee period of 01 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 01 year. Payment only for dehydration of the transformer oil and painting of the transformers replacement of certain items considered separately here- in- after 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. (viii) The contractor shall also clear the breathers. The unit rate quoted by the contractor shall included this aspect also.

(viii) The contractor shall also clear the breathers. The unit rate quoted by the contractor shall included this aspect also. (ix) Contractor shall provide all arrangement for carefully handling/conveyance of/ transportation of equipment by means of crane/chain pully/recovery van and vehicles as per requirements and directed by Enge- in- Charge. (x) Transformer oil tank rubberised 6.0mm thick gasket sheet pasted using gasket cement, oil level gauge, drain valve, painting inner side tank by zinc chromate paint and outer side by approved paint include in this item rate. (xi) The rate quoted by contractor shall include all these aspect from (i) to (x) while quoting his tender that quoted rate also include the provision of providing electric connection to exisiting system.

M&L for shifting of transformer of capacity 63 to 5000KVA from existing PCC platform/ four pole/two pole structure/MES store yard and fixing on platform/four pole/two pole structure at other location by suitable capacity of crane including necessary connection on HT & LT side and testing on completion complete as directed by Enge-in-Charge.

Segregation of HT/LT leg coil from transformer and making new HT/LT leg coil with insulating copper wire of required gauge craft paper cotton tape HT/LT insulation as per as per IS specification of old transformer including ovening & heating after marking of coil as required of following capacity.

HT leg Coil copper

LT Coil copper

HV /LV leg Coil copper for 5000 KVA (Power transformer)

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

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

63 to 250 KVA.

300 to 400 KVA.

500 to 630 KVA.

1000 to 5000 KVA

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

63 to 250 KVA.

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

63 to 250 KVA.

1000 to 5000 KVA

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

63 to 250 KVA.

300 to 400 KVA.

500 to 630 KVA.

Supply only tap changer switch complete with rod and gasket for any type of transformer at site/in workshop all as directed for the following capacity :-

63 to 250 KVA.

300 to 400 KVA.

500 to 2000 KVA.

Supply only oil drain valve for any type of transformer at site/in workshop all as directed for the following capacity :-

63 to 250 KVA.

300 to 400 KVA.

500 to 2000 KVA.

Supply & replacement De-hydrating breather with first fill of dehydrating agent (silica gel).

63 to 250 KVA.

300 to 400 KVA.

500 to 5000 KVA.

S&F One 100mm 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.

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 of following capacities:-.

63 to 250 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 as directed for transformer of the following capacity:-

63 to 200 KVA.

250 to 315 KVA

M&L for replacement of fresh silica gel complete all as specified and directed.

Replacement of oil level indicator glass for any type/ capacity of transformer complete all as directed .

Repair cooling pipe of transformer of any capacity at site for rectification of any leakage including welding/ Brazing 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 keep 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 all as specified and directed by Engineer-in-Charge of following capacity :-

63 to 200 KVA.

250 to 315 KVA

400 to 500 KVA.

630 to 2000 KVA.

Supply & Fixing Aluminium lugs / PG clamb for HT bushing of suitable size by means of using crimping tool after removing existing unserviceable lugs for the any type/ capacity of transformers all as directed by Enge-in-Charge.

Supply & Fixing Aluminium lugs / PG Clamb for LT bushing of suitable size by means of using crimping tool after removing existing unserviceable lugs for the following capacity of transformers all as directed by Enge-in-Charge :-

63 to 300 KVA transformer

315 to 500 KVA transformer

630 to 5000 KVA transformer

Supply & Filling of transformer oil in transformer in situ/at site for toping up the level of oil having dielectric strength 60 KV during filling after initial filtration conforming to IS-335. Transformer oil shall be supplied in sealed container complete all as directed by Engr-in-Charge.

Dehydration/ filtration of transformer oil of existing transformer installed at site with portable plant to improve the dielectric strength 60 KV during filling after initial filtration including testing of dielectric strength after dihydration at site.

NOTE :- (i) All arrengement of DG set of suitable capacity of electric supply for running of dehydration plant, T&P and other items required will be arranged by contractor and deem to be included in the cost of dehydration/filtration and nothing extra on this account will be admissiable.Any damage after filtration shall be solely responsible of Contractor & same shall be repaired without any additional cost.

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 as directed by EIC for following capacity of transformer ;-

63 to 250 KVA transformer

300 to 400 KVA transformer

500 to 2000 KVA transformer

5000 KVA transformer

Testing of power transformers of Capacity 5 MVA to 10 MVA installed at MRS with Carried out the following test as the desire satisfaction of Engineer in-charge/GE :- (a) Voltage ratio test (b) Magnetization Current Test (c) Voltage balancing Test (d) Short Circuit Test (e) Oil testing having Dielectric strength upto 60 KV NOTE :- (i) The contractor shall produce test certificate against above tests from ser no (a) to (e) from the certified firm.

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