PROVISION OF TRANSFORMER FOR OTM ACCN (PH-I) AT AF STATION BAGDOGRA UNDER GE (AF) BAGDOGRA

Amount

Note 1: (Applicable for all parts/items) : The bidders/ contractors are advised to read tender documents & all corrigendum/amendments and general condition of contracts before entry/quoting the rates. Note 2:- Attention to bidder is hereby invited to upload revised BOQ if published during their bid submission. Uploading of incorrect/ pre-revised BOQ shall be treated as non bonafide and rejected. Fixed credit has been given in technical documents which shall be taken into account during acceptance of bid/tender.

Supply, installation, commissioning and testing Isolation transformer indoor type three Phase, 50 Hz. AC Oil-Cooled, Double Wound, impregnated Isolation Transformer, maximum ambient temperature of 45 Deg C, conforming to IS 2026 & IS 11171 with load protection with standard fittings, provides overload, surge and under current protection where surge protection against load surges 433/433 volts, 3 phase 4 wire with off load tapping on into vary secondary voltage within limit, insulation class 'A' all as per IS of capacity 750 KVA Primary :433 V, 3-Phase, 50 Hz, AC, Secondary : 433 V AC 3 Phase, 50 Hz Connection : Delta _ Star, Vector Group : Dyn 11 as follows complete all as specified and as directed. (i) Bottom oil filter cum drain valve. (ii) Rating diagram and terminal marking plate (iii) Earthing terminal - 02 Nos (iv) Lifting plugs - 01 Set (v) Under carriage with 4 Nos of bidirectional rollers (vi) Separate neutral bushing shall be brought out for earthing. Notes:- 1. The transformer shall be tested as type test rountine test as per IS 2026 in presence of GE/his rep. 2. The contractor shall submit QAP (quality assurance programme) within 15 days after placement of order for transformer testing at factory. Transformer shall be dispatch only after to inspection clearance by inspecting officer. 3. The contractor/manufacturer shall furnish original MILL certificate (paid voucher and test certificate) for the CRGO manufacturer. 4. The contractor shall get the approval of GE for the make of the transformer they plan to produce. 5. Prior to manufacturing the general arrangement drawing design details of the transformer shall be got approved by GE. 6. Separate neutral bushing shall be brought out for earthing. 7. Necessary foundation shall be provided as per manufacturers recommendation quoted rate shall be deemed to be included accordingly.

M/S MECHANICAL ENGINEERING and ELECTRICAL CONTRACTORS

Instruments and Equipment Co

SARKAR ENGINEERING CO.

M/S POWER ENGINEERS

M/S P K ROY AND CO

M/S BENGAL ENGINEERING ENTERPRISES

M/S SUNNY ENTERPRISE

M/S ALPHA BETA CONSTRUCTION

M/S SARKAR ELECTRIC

M/S R. K. INDUSTRIES

M/S SUPARNA ELECTRICALS