| Reference | BID8798 |
| Date | 8/6/2009 |
| Location | Middle East |
| Scope | Ref. No.: 65.09.5027.01 Issue Date: 06/08/2009 Pre-Tender Meeting Date: 16/08/2009 (will be held in the contracts Dept., North Oil Company (NOC), Kirkuk, Iraq) Bid Closing Date: 02/09/2009 Offer Validity: 5 months from the Bid Closing Date. Document Price: 65 000 Iraqi Dinars Bid Bond: 1% From the total value of tender price. Work Description: Supply of ZIG ZAG transformer, 250 kva, (11/0.38) kv steps down. 1- Technical data: - 3 ph-oil transformer, continuous service, in door type. - Rated power 250 kva - Power definition: design and power definition in line with IEC 76 - Ratio (11/0.4) kv step down. - Vector group (ZNYNI) - Impedance voltage at 75 °c: rated power (kva) 250, impedance voltage 3.64 % - Maximum duration of symmetrical short circuit (3 SCE). - Insulation level - Rated current (13a). - No load current (io = 0.2-0.4 / 0.4-0.8) - Frequency 50 hz - Temperature rise limits (maximum, anbient temp. 55°c) - Cooling method (ONAN) - Noise level: transformer 51 db 2- The transformer should be equipped with the follwing ACC - Dial type thermometer of oil - Oil level indicator - Double float Buchholz relay with (2) contacts for alarm and trip - Air dryer - H.V and L.V bushings - H.V neutral and L.V neutral bushings - Air insulated cable box on h.v and l.v sides - Winding to be manufactured from copper - 50 % spare transformer oil - Spare parts for 5 years of operation for transformer - Lifting eyes |
