CWE/AF AMB/AMB-46/2020-21 PROVISION OF TROLLEY MOUNTED TRANSFORMER AT SITE IV UNDER GE (AF) AMBALA

Amount

Supplying, installation, commissioning and testing of transformer step down, 11 KV/433 volts as per IS-1180-2014 (Level- III), outdoor floor mounted type, copper wound, suitable for AC, three phase, 4 wire, 50 Hz system of capacity 250 KVA, oil immersed having Vector group DYN-11, naturally cooled type with and including first filling of transformer oil, delta connection on HT side, star connection on LT side, manually, operated, off-load tap changer on HT side to vary secondary voltage to + 7.5% & -7.5% in five steps and above of 2.5% each, cable end box at HT & LT side, LT side cable box shall also be fitted with suitable size of cable glands for making connections with all the accessories and the under mentioned fittings complete all as specified and directed:- (a) Rating plate and terminal marking plate. (b) Two earthing terminal for body earthing and two additional for neutral brought out on a bushing.

(c) Lifting lugs. (d) Drain valve with plug or cover plate. (e) Dehydrating breather. (f) Oil level indicator with aluminium and maximum marking. (g) Cooling radiator. (h) Thermometer pocket. (j) Conservator. (k) Oil filling hole with cover. (l) Thermometer 100mm dial/stem type with metal guard having maximum temperature indication with resetting. (m) Silica gel breather duly filled with silica Gel. (n) Any other fittings as recommended by the manufacturer of efficient functioning of the transformer.

Notes for Srl item No. 1.00: - (i) The loading & unloading in trolley shall be included in the quoted rates. (ii) The transformer shall be of latest star rated and energy conservation (Energy conservation Binary Corps) for which necessary test certificate of manufacturer shall be produced by the contractor. (iii) Transformer manufacturer shall be in possession of licence from bureau of Indian standard. (iv) The fitting & accessories of the transformer shall be conforming to is 3639 : 1996. (v) The transformer shall be tested as per IS for all routine tests in the factory premises in the presence of rep of Accepting Officer on the receipt of request from the contractor in addition to routine tests . The transformer shall be tested for 10% over load at factory premises for minimum 01 hour after full load cycle of 08 hours. (vi) The Transformer shall be tested by SEI/EI/AEI beore commissing. (vii)All the test results shall be produced before RAR. All necessary arrangements i.e. Co-ordination with the manufacturer & testing officer, arranging equipments and material to facilitate testing at the manufacture’s premises etc. shall be borne by the contractor.

Supplying, laying, jointing, testing and commissioning of HT XLPE cable, 11000 volts (earthed), insulated, screened, sound compacted aluminium conductor, screening with extruded semi conducting layers, insulation screening with copper tape covers laid up with PVC (ST-2), extruded inner sheathed GI strip armoured PVC (ST-2) out sheathed, ISI marked with IS-7098 Part II with amendment, size cross sectional area 95 Sqmm, 3 core, laid in pipes /ducts /along poles/ walls/ equipment etc complete all as specified and directed. NOTES : (i) Cable shall be of manufacturing date not earlier than Oct 2020. All the cable shall be embossed with year of manufacturing, meterage at every metre, in addition to its own standard markings as per IS i.e. Size, voltage etc. (ii) No straight through joint shall be permitted in less than single drum length. (iii) The contractor shall produce original purchase vouchers duly machine numbered alongwith excise duty gate pass of factory for verification and record.

Supplying, laying, jointing, testing and commissioning XLPE LT electric cable 1100 Volts grade, heavy duty, PVC insulated and sheathed armoued electric power cable with stranded aluminium conductor, of cross sectional area 185 Sqmm 3.5 core conforming to IS- 7098 (Part I) 1988 along the wall/pole through pipe etc served with an inner sheathing of PVC tape and overall PVC sheathed armoured with galvanized steel wire or tape, complete all as specified and directed.

Supply and fixing cable jointing kit for 11 KV earthed grade cable for indoor end termination heat shrinkable type joints with jointing material and accessories for 3 core XLPE armoured aluminium conductor cable of size 95 Sqmm including cutting complete all as specified and as directed.

Supply and fixing cable jointing kit for 11 KV earthed grade cable for outdoor end termination heat shrinkable type joints with jointing material and accessories for 3 core XLPE armoured aluminium conductor cable of size 95 Sqmm including cutting complete all as specified and as directed.

M&L for fabriction of Trolley four wheeled size 3.5 mtr X 2.5mtr fabricated out of following rolled mild steel confirming to Fe 410-W (Gde-E- 250), quality-A complete all as specified and as directed.:- Note: (i) The steel surface of trolley shall be painted by synthetic enamel paint over & including one coat of red oxide primer after preparation of surface and the cost shall deemed to be included in quoted rates. (ii) The drawing of Trolley to be fabricated by contractor shall be produced to GE for approval before fabrication. The cost shall deemed to be included in the quoted rate.

M&L for mild steel XPM, Expanded metal of weight not less than 4Kg per Sqm, cut to length, bent to shape required and tying with and including annealed mild steel wire not less than 0.9mm dia or fixing with galvanised steel staples supplied and fixed complete to wood or steel members complete all as specified & directed.

S&F steel Axle with bearing hub of standard size to be fixed in steel trolley complete all as specified and as directed.

S&F Tyre & tube with out/inner of size 7.00-16 made out of natural and synthetic rubber (Polymer) complete all as specified & directed.

S&F steel RIM size 7.00-16 complete all as specified & directed. Note for Srl item No. 9.00 to 11.00:- (i) The Axle, Tyre & tube and RIM shall be suitable for steel trolley to be fabricated here-in-above and to bear the load of transformer complete all as directed. (ii) All the items shall be approved by GE before execution.

Supply and fixing of galvanised iron strip of size 32mmX6mm complete complete all as specified and directed.

Esha Engineers

Baliyan Electrical Works

M/s Shiksha Enterprises