BANGLADESH POWER DEVELOPMENT BOARD TENDER ... - BPDB

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Rating: To meet the required ofthe specification as stated in Clause 5Voltage ratio of single phase 11 230transformer at full load : / KV√3Connection [HV-LV] :Ynd 1 as shown in singleline diagram.Rated insulation level: HV winding LV windingLighting impulse Withstand : .... kV (Peak) 75 kV PeakVoltage (1.2/50 micro sec.)Power frequency withstand : .......kV 28kVVoltage (for 1 min).Impedance voltage: Shall be within the range of15% and 18%Tap changer: On load at high tensionwinding ±8 x 1.25 %.TerminationHigh tension side:Outdoor bushing for Cable Pot HeadLow tension side:11 kV Isolated & insulated phase busduct and XLPE cables.2) One (1) lot of associated equipment.2.3. Unit Auxiliary Transformer, Station Transformers and AssociatedEquipment1) One (1) set of unit auxiliary transformer and associated equipment withthe following features:TypeRatingRated high voltageRated high voltage: Oil immerse, three phase andtwo windings, outdoor power transformer.: To meet the requirement of theSpecification:11 kV: 6.6 kVConnection : Ynd 11Rated insulation level :HV WindingLV WindingGhorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)12
Lighting impulseWithstand voltage(1.2/50 micro sec) : 75 kV (Peak) 60 kV(Peak)Power frequencyWithstand voltage(For 1 mm). : 28 kV 22 kVImpedance voltage : shall be within the range of 5% and 7.5%Tap changer : Off-current on high tension winding ±5%Neutral grounded: Solidify grounded2) Two (2) sets of station transformer and associated equipment with thefollowing features:TypeRatingRated high voltageRated low voltageConnectionRated insulationLighting impulseWithstand voltage(1.2/50 micro sec.): Oil immersed, three phase andtwo windings, outdoor power transformer: To meet the requirement of the specification:6.6 kV:415 V:Dyn11:HV Winding LV Winding: 60 kV(peak)Power frequencyWithstand voltage(for 1 mm). :28 kV(peak) 4kVImpedance voltage: Not less than 5 %, but notmore than 7.5 %.Tap changer : Off-current on high tension winding ±5%Neutral grounded: Solidly grounded2.4 Control And Protection SystemThe gas turbine generating plant shall be capable of semi-attended operationunder local unit control, and shall also be capable of remote control from thecentral control room within the site area. The automatic start-up and shut downsequences shall be initiated by push button on either the local control panel or thecentral control panel. Synchronisation shall be automatic with provision for localand remote manual control.In addition to the unit local control and protection panels/ HMI, the followingGhorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)13
Page 2 and 3: Volume - 2Technical RequirementsSec
Page 4 and 5: GHORASAL 200 MW to 300 MW GAS TURBI
Page 6: 2. Scope Of Work2.0 Scope of work2.
Page 9 and 10: 3. Generator switchgeara. Outdoor e
Page 11: Rated frequency: 50 HzRated nominal
Page 15 and 16: h. One (1) Lot Control and instrume
Page 17 and 18: 2.13 TestsThe Contractor shall be r
Page 19 and 20: Section 3Power Plant ArrangementGho
Page 21 and 22: 3.0 Power Plant Arrangement3.1 Gene
Page 23 and 24: 3.3.2.4 Compressor Wet Washing Syst
Page 26 and 27: The distillate fuel oil system shal
Page 28 and 29: 6. Sump tankThe sump tank allows dr
Page 30 and 31: provide necessary protection for ma
Page 32 and 33: 4. Generator And Ancillary Equipmen
Page 34 and 35: 4.1.4 Temperature RiseThe temperatu
Page 36 and 37: 4.1.12 Accessoriesa. Temperature de
Page 38 and 39: - Secondary wiring including cable
Page 40 and 41: 4.3.6 Voltage TransformerThe voltag
Page 42 and 43: 3) The rated service voltage shall
Page 44 and 45: Section 5TransformersGhorasal 200 M
Page 46 and 47: 5. TRANSFORMERS5.1 GENERALThe trans
Page 48 and 49: . The tank shall be of the welded s
Page 50 and 51: The wiring shall be connected at th
Page 52 and 53: 5.3 UNIT AUXILIARY TRANSFORMER5.3.1
Page 54 and 55: h. Anchor devicei. Oil preservation
Page 56 and 57: 6. 230 kV OUTDOOR SWITCHGEAR, EQUIP
Page 58 and 59: -Power frequency withstand voltage(
Page 60 and 61: eaker.(6) Dielectric Test Voltagea.
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. Rated insulation level- Lighting
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f. Unless otherwise specified, the
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6.3.2 DESIGN CRITERIAThe steel stru
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6.4 INSULATORS AND WIRING MATERIALS
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Section 76.6 Kv SwitchgearAndLow Te
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7. 6.6 kV SWITCHGEAR AND LOW TENSIO
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- Number of circuit :Determined by
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Section 8Control And ProtectionGhor
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8. CONTROL AND PROTECTION EQUIPMENT
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- Automatic synchronising equipment
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ee. AVR failure xff. Emergency Trip
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can be seen through the window with
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Required no. of 6.6 kV and 415 V vo
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8.10.3 CONTROL EQUIPMENT(1) Transmi
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The test block shall be of the back
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Section 9Cabling And GroundingGhora
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9. CABLING AND GROUNDING9.1 GENERAL
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9.2.4 CONTROL AND INSTRUMENT CABLES
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9.4 CABLE ERECTIONConcrete lined ca
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Section 10DC Power Supply SystemGho
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10 DC POWER SUPPLY SYSTEM10.1 BATTE
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float charge as well as boost charg
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Section 11Lighting And Small Power
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11. LIGHTING AND SMALL POWER SUPPLY
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(ii)Three phase plug socketOutdoor-
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Section 12Fuel Handling FacilitiesG
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12. FUEL OIL SYSTEM AND HANDLING FA
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from unloading base to the fuel tan
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13. FIRE PROTECTION FACILITIES13.1
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System of lock off to (but not exit
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Section 14Communication FacilitiesG
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14. COMMUNICATION FACILITIES14.1 GE
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(2) General CommunicationWhen the o
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(1) BatteryType of batteryCapacityN
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15. MAINTENANCE FACILITIESPage15.1
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15.1.4 RATINGThe rating of the cran
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The main power supply shall have a
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Static tests of all automatic seque
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Section 16Tests And InspectionsGhor
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16 TESTS AND INSPECTIONS16.1 GENERA
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subjected to the following tests by
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c. Stranded Conductors for Overhead
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days from the receipt of the said n
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circuit of unit motor control centr
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Special measures may have to be tak
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Checks shall be made of the local a
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Section 17Civil WorksGhorasal 200 M
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17.9 Sewage Works17.9.1 General17.9
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17.1.4 SITE LABORATORYThe Contracto
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where directed by the Board extra s
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approval regarding the re-measureme
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igidly in position down to the lowe
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on piles together with the apparatu
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than 15 cm in size containing suita
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aggregates shall be washed prior to
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17.6.13 FORMWORK AND TIMBERINGFormw
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he Contractor shall repair at his o
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Sieve designationPercentage by(Squa
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(b) Transverse Joints: The transver
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17.7.2 Gravel SurfacingThe Contract
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extended with sufficient number of
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A written record of the drilling in
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) Control EquipmentThe control equi
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17.12.2 GatesSliding metal gates of
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18 Building WORKS18.1 General18.1.1
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18.1.4 RecordsThe Contractor shall
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FrameRoofExterior wallPartition wal
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18.5 Materials And Workmanship18.5.
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(7) PaintPrior to delivery after sh
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oof cladding shall be less than 1.1
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. Wooden doorsPlywood for panelThic
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The terrazzo is to be trowelled to
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to suit. Stud shall be formed of ap
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Section 19Spare PartsGhorasal 200 M
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19. SPARE PARTS19.1 GENERALThe Cont
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BACKGROUND INFORMATION:Bangladesh P
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- Overhauling of all electrical mot
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3. BASIS OF PRICE3.1 Basis of price
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the delayed services or such other
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13. GENERAL CLAUSES CONCERNING TERM
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17. INSURANCEThe insurance includin
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Appendixes20.1 Site Layout20.2 Grid
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BANGLADESH POWER DEVELOPMENT BOARD TENDER ... - BPDB

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