Military Engineer Services Tender
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Military Engineer Services - MES Tender
Electrical Generators And Transformers
Electrical and Electronics
Eprocure
Opening Date23 Nov 2024
Closing Date21 Dec 2024
Tender Amount₹ 21,00,000
Costs
EMD
₹ 42,000Document Cost
₹ 500Tender Fee
Refer Documents
Description
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Contact
Tender Id
2024_MES_685287_1Bid Award Id
ViewTender No
CWE/P-45/2024-25Tender Authority
Military Engineer Services ViewPurchaser Address
-Website
http://http://mes.gov.in/
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BOQ Items
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(g) Oil (i) The insulating oil shall comply with the requirements of IS 335. Use of recycled oil is not acceptable. The specific resistance of the oil shall be as per IS 335. (ii) Oil shall be filtered and tested for break down voltage (BDV) and removal of moisture content before filling. (iii) The oil shall be filled under vacuum. (iv) The design and all materials and processes used in the manufacture of the transformer, shall be such as to minimise the risk of the development of acidity in the oil. (v) Insulation level impulse voltage 75 KV. (h) Losses (i) Transformer tank construction shall conform in all respect to clause 15 of IS 1180(Part-1):2014. (ii) The internal clearance of tank shall be such, that it shall facilitate easy lifting of core with coils from the tank without dismantling LV bushings (iii) All joints of tank and fittings shall be oil tight and no bulging should occur during service. (iii) Inside of tank shall be painted with varnish/hot oil resistant paint. (iv) The transformer tank shall be of robust construction rectangular/ octagonal/ round/ elliptical in shape and shall be built up of electrically tested welded mild steel plates of thickness of 6 mm and 4 mm respectively above 100 kVA. (v) the corners shall be fully welded ,the corners from inside and outside of the tank to withstand a pressure of 0.8 kg/cm2 for 30 minutes. (vi) The tank shall be further capable of withstanding a pressure of 0.8kg/sq.cm and a vacuum of 0.7 kg/sq.cm without any deformation
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(vii) The radiators can be tube type or fin type or pressed steel type to achieve the desired cooling to limit the specified temperature rise. (viii) Tanks with corrugations shall be tested for leakage test at a Pressure of 0.25kg/ sq cm measured at the top of the tank. (k) Paint Material (i) Heat resistant ( Hot oil proof) paint should be used for inside surface. (ii) For external surfaces one coat of thermo setting powder paint or one coat of epoxy primer followed by two coats of synthetic enamel/ polyurethene base paint. These paints can be either air drying or stoving type. (iii) The painted surface shall be tested for paint thickness. (iv) The painted surface shall pass the cross hatch adhesion test and impact test as acceptance tests and salt spray test and Hardness test as type test as per the relevant ASTM standards. Note :- Supplier shall guarantee the painting performance requirement for a period of not less than 5 years. (l) Bushing (i) The bushings shall conform to the relevant standards specified and shall be of outdoor type. The bushing rods and nuts shall be made of brass material 12 mm diameter for both HT and LT bushings. The bushings shall be fixed to the transformers on side with straight pockets and in the same plane or the top cover for transformers above 100 kVA.
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(ii) Bushing can be of porcelain/ epoxy material. Polymer insulator bushings conforming with relevant IEC can also be used. (iii) Bushings of plain shades as per IS 3347 shall be mounted on the side of the Tank and not on top cover. (iv) Dimensions of the bushings of the voltage class shall conform to the Standards specified and dimension of clamping arrangement shall be as per IS 4257 (v) Minimum external phase to phase and phase to earth clearances of bushing terminals shall be 255mm and 140 mm respectively. (vi) Arcing horns shall be provided on HV bushings. (vii) The core/coil assembly shall be securely held in position to avoid any movement under short ciruit conditions. (viii) Brazing of all inter connections, jumpers from winding to bushing shall have cross section larger than the winding conductor. All the Brazes shall be qualified as per ASME, section - IX. (ix) 1 clamp for LA shall be provided for each HT bushing. Supply LA is not included in DT supplier scope.
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(m) TESTS (i) All the equipment offered shall be fully type tested by the bidder or his collaborator as per the relevant standards including the additional type tests. The type test must have been conducted on a transformer of same design during the last five years at the time of bidding. The bidder shall furnish four sets of type test reports along with the offer. In case, the offered transformer is not type tested, the bidder will conduct the type test as per the relevant standards including the additional type tests at his own cost in CPRV NABL accredited laboratory in the presence of employers representative(s) without any financial liability to employer in the event of order placed on him. (ii) The test certificates for all routine and type tests for the transformers and also for the bushings and transformer oil shall be submitted with the bid. (iii) The procedure for testing shall be in accordance with IS1180 (Part-I) :2014 / 2016 as the case may be except for temperature rise test. (iv) Before dispatch each of the completely assembled transforrners shall be subjected to the routine tests at the manufacturerns works. (v) Checking of weights, dimensions, fitting and accessories, tank sheet oil quality, material, finish and workmanship as per guaranteed technical particulars (GTP) and contract drawings of transformer. (vi) Technical particular against specification :- minimum weight of mtrl core(copper Kg) - 620 Kg
conductor- 390 Kg , minimum thinckness of tank top & bottom 6 mm, side 4 mm, flux density 1.69Tesla
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M&L for trolley for transformer of size (L-14'x W-7'x H-21') made out of mild steel angle /chanels medium weigh beams & MS flates with necessary welding in any position drilling in hot /cold etc for longitute and cross members of trolly made out of ISMC chanel 100 and top of the members covered with 6mm thick MS plate plateform and vertical support over the plateform with MS equal angle of size 50x50x6mm thick angles with MS flate 50x5mm thick for two runs of bracing supports, V type towing frame with hook with spring and checknuts and mounting braket with bush for movement of tow assembly .The assembly made out of ISMC chanel 100 with long and cross member turning plate assembly for front wheel only fitted in the front axle , the front and rear axle made out of medium weight beam ISMB 100 including tyre with tube four Nos new tyres 900x20 JK/appollo with wheel drum,mounting braket, bearings, check nuts, locknuts, Key etc welded with medium beam with nut bolts washers as required for mounting the transformer, including painting & writing including steel jali upto 1 metre above the side edges with angle iron of suitable size all as directed.
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Supply , laying and testing cable XLPE insulated screened,PVC bedded, galvanised steel strip or wire armoured, electric cables (heavyduty ) with stranded aluminium conductor, 11000 volts grade earthed cable of size 95 sqmm 3 core complete all as specified and directed.
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Supply and fix for cable end joint kit 11 KV (earthed) grade cable for outdoor type termination cold shrinkable type joint complete with all jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and directed
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Supply and laying XLPE, LT Cable of size 300 Sqmm, 3.5 core, 1100 Volt grade heavy duty with XLPE insulated standard aluminium conductor served with an inner sheathening of PVC tape armoured with Galvanized steel wire and over all PVC Sheathed stranded conductor conforming to IS- 7098 (Part-I) with latest amendments laid in trenches/fixed to wall/pole/laid in floor including necessary connections and suitable size of thimbling complete all as specified and directed.
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Supply and laying XLPE, LT Cable of size 70 Sqmm, 3.5 core, 1100 Volt grade heavy duty with XLPE insulated standard aluminium conductor served with an inner sheathening of PVC tape armoured with Galvanized steel wire and over all PVC Sheathed stranded conductor conforming to IS- 7098 (Part-I) with latest amendments laid in trenches/fixed to wall/pole/laid in floor including necessary connections and suitable size of thimbling complete all as specified and directed.
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