منتدى الهندسة الكهربية - كتالوج اريفا لتركيب وصيانه السويتش جير

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[B]Medium Voltage [/B]

[B]Cable With Copper C**ductor[/B]

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[B]1. Scope of The Tender:[/B]

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[B]This tender includes for the manufacturing, testing, packing, shipping delivery ex-works, FOB & C&F OF 18/30(36) kV and 12/20 (24) kV cables.[/B]

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[B]2-General Requirements:[/B]

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[B] The materials shall be of first class quality and designed for c**tinuous satisfactory operati** as c**tinuity of supply is of prime importance and to operate satisfactorily under variati** of load, voltage and short circuit or other c**diti**s which may occur ** the system provided that these variati**s are ****** the assigned rating of the apparatus. [/B]

[B] The materials used shall be suitable for the following climatic and soil c**diti**s.[/B]

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[B]2-1 Ambient temperature:[/B]

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[B] Highest maximum (in the shade) 55[F**T=Times New Roman] [/F**T][F**T=Times New Roman]C for about 6 hours a day [/F**T][/B]

[B][F**T=Times New Roman] Lowest minimum (-10) C [/F**T][/B]

[B][F**T=Times New Roman] Maximum yearly average (+30) C[/F**T][/B]

[B][F**T=Times New Roman] Maximum daily average (+40) C[/F**T][/B]

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[B]2-2 Sun temperature:[/B]

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[B][F**T=Times New Roman] Black objects under direct sunshine attain a temperature of 80 C[/F**T][/B]

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[B]2-3 Air humidity: [/B]

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[B][F**T=Times New Roman] Maximum 92% at 40 C[/F**T][/B]

[B][F**T=Times New Roman] Minimum 12%[/F**T][/B]

[B][F**T=Times New Roman] Yearly average 44%[/F**T][/B]

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[B]2-4 Altitudes:[/B]

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[B][F**T=Times New Roman] from sea level up to (1000m)[/F**T][/B]

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[B]3-Technical Requirement:[/B]

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[B]3-1 System Data[/B]

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[B][F**T=Times New Roman]a. 33KV System[/F**T][/B]

[B][F**T=Times New Roman] Nominal voltage 33000 volts[/F**T][/B]

[B][F**T=Times New Roman] Highest system voltage 36000 volts[/F**T][/B]

[B][F**T=Times New Roman] System 3-phase,3 wire with neutral grounding transformer to limit the earth fault current to 1000 Amp.[/F**T][/B]

[B][F**T=Times New Roman] Frequency 50HZ[/F**T][/B]

[B][F**T=Times New Roman] Short circuit breaking current 25KA.R.M.S at 33000 volts.[/F**T][/B]

[B][F**T=Times New Roman] [/F**T][/B]

[B][F**T=Times New Roman]b.11 KV System [/F**T][/B]

[B][F**T=Times New Roman] Nominal voltage 11000 volts[/F**T][/B]

[B][F**T=Times New Roman] Highest system voltage 12000 volts [/F**T][/B]

[B][F**T=Times New Roman] System 3-phase, 3wire neutral earthed through resistance of. 21.1 [/F**T][F**T=Lucida C**sole]OHM [/F**T][F**T=Times New Roman]limiting earthed fault current to 300A [/F**T][/B]

[B][F**T=Times New Roman] Short circuit breaking Current 25 KA R.M.S at 11000 volts.[/F**T][/B]

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[B]3-2 Standards:[/B]

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[B][F**T=Times New Roman] The cable shall be in accordance with the latest issue of the I.E.C. [/F**T][/B]

[B][F**T=Times New Roman] Particularly IEC NOS 60502 & 60228 specificati**s and 60949.[/F**T][/B]

[B]3-3 Deviati**s[/B]

[B][F**T=Times New Roman] The tendrer shall particularly menti** in his tender all deviati**s[/F**T][/B]

[B][F**T=Times New Roman]of his offer from the specificati**s described in these tender documents.[/F**T][/B]

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[/F**T][/U][B]4-General Cable Characteristics:[/B]

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[B]4-1 C**ductor:[/B]

[B][F**T=Times New Roman]Compact electrolytic annealed stranded plain circular copper C**ductor of high c**ductivity 99.9% purity.[/F**T][/B]

[B]4-2 C**ductor screen:[/B]

[B][F**T=Times New Roman]A layer of extruded semi-c**ducting compound forming a n** metallic screen. The extruded semi- c**ducting compound shall be firmly b**ded to the insulati**.[/F**T][/B]

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[B]4-3 Insulati**:[/B]

[B][F**T=Times New Roman]Extruded XLPE cured with dry curing process.[/F**T][/B]

[B][F**T=Times New Roman] [/F**T][/B]

[B]4-4 Insulati** screen:[/B]

[B][F**T=Times New Roman]a- N** metallic screen applied directly over the XLPE insulati** and shall c**sist of a layer of extruded semi c**ducting compound and of 50% overlap semic**ducting tape. [/F**T][/B]

[B][F**T=Times New Roman]b- The metallic screen must be a combinati** of copper stranded and copper tape.[/F**T][/B]

[B][F**T=Times New Roman]For 33kv cable the equivalent cross-secti** area to be 35 mm2[/F**T][/B]

[B][F**T=Times New Roman]For 11kv cable the equivalent cross-secti** area to be 25 mm2[/F**T][/B]

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[B]4-5 filler & bedding :[/B]

[B][F**T=Times New Roman]The three cores then laid up with suitable extruded EPR fillers a compact circular assembly and bedded with a layer of extruded P.V.C. [/F**T][/B]

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[B]4-6 waterproof tape:[/B]

[B][F**T=Times New Roman] A layer or suitable tape for water proofing to be laid over the bedding.[/F**T][/B]

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[B]4-7 Metallic Armour: [/B]

[B][F**T=Times New Roman]The three cores then armoured with double galvanized steel tapes of thickness not less than 0.5mm. 50% overlap.[/F**T][/B]

[B][F**T=Times New Roman] [/F**T][/B]

[B]4-8 PVC Jacket: [/B]

[B][F**T=Times New Roman]Over all extruded PVC seamless sheath to prevent moisture from penetrating and provides good corrosi** protecti** thickness not less than 3 mm and to be antitermite treated (n** polluted material).[/F**T][/B]

[B][F**T=Times New Roman]Marking of (11 kV) or (33 kV) in the Arabic language should be stamped each **e meter length and treated. Also name, year of manufacture, Voltage & cross secti** in the Arabic language. The colours are to be :- RED FOR 33 kV BLACK for 11 kV.[/F**T][/B]

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[B] 4-9 Packing[/B]

[B][F**T=Times New Roman]The required cables lengths are to be supplied ** sea – worthy good quality drums of lengths as specified in item 5.[/F**T][/B]

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[B]5- Type of Cables:[/B]

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[B]5.1 36 KV cables: [/B]

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[B] 5.1.1. 1x400 mm2[/B]

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[B][F**T=Times New Roman] For this cable the applicable paragraphs of article a are :-[/F**T][/B]

[B][F**T=Times New Roman]4.1,4.2,4.3,4.4,4.6,4.8,4.9-with rated voltage VO/V=18000/30000 V (suitable for highest system voltage of 36000 V) 500 m. length drums [/F**T][/B]

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[B]5.1.2 3x150 mm2 [/B]

[B][F**T=Times New Roman]For this cable the applicable paragraphs of Article 4 are :-4.1,4.2,4.3 4.4,4.5,4.6,4.7,4.8,4.9 – with rated voltage VO/V =18000/30000V (suitable for highest system voltage of 3600v ) ** 250m length drums .[/F**T][/B]

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[B]5.2 24 kv cables:[/B]

[B]5.2.1 1x400 mm2[/B]

[B][F**T=Times New Roman]For this cable the applicable paragraphs of Article 4 are : 4.1,4.2,4.3,4.4,4.6,4.8,4.9 - with rated voltage VO/V =12000/20000 (suitable for highest system voltage of 12000V) with 250m length drums .[/F**T][/B]

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[B]5.2.2 1x150 mm2[/B]

[B][F**T=Times New Roman]For this cable the applicable paragraphs of Article 4 are : 4.1,4.2,4.3 (same note as para.5-2-1) 4.4,4.8,4.9 with 500m length drums .[/F**T][/B]

[B][F**T=Times New Roman] [/F**T][/B]

[B]5-2-3 [/B]

[B][F**T=Times New Roman]1x95 mm2[/F**T][/B]

[B][F**T=Times New Roman]1x70 mm2[/F**T][/B]

[B][F**T=Times New Roman]1x50mm2[/F**T][/B]

[B][F**T=Times New Roman](same statement AS 5-2-2)[/F**T][/B]

[B][F**T=Times New Roman] [/F**T][/B]

[B]5.2.4 3x150 mm2[/B]

[B][F**T=Times New Roman]For this cable, the applicable paragraph of Article 4 are :[/F**T][/B]

[B][F**T=Times New Roman]4.1,4.2,4.3,4.4,4.5,4.6,4.7,4.8,4.9-with rated voltage 12/20 KV and thickness of , insulati** 5.5 mm2 with 250 cable drums .[/F**T][/B]

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[/F**T][/U][B]6-Technical Informati** for Cables:[/B]

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[B][F**T=Times New Roman]The tenderer is requested to give following informati** with his offer:-[/F**T][/B]

[B][F**T=Times New Roman]7-1 Resistance of copper per KM of cable[/F**T][/B]

[B][F**T=Times New Roman]7-2 Inductance of copper per KM of cable[/F**T][/B]

[B][F**T=Times New Roman]7-3Capacitance of copper per KM of cable[/F**T][/B]

[B][F**T=Times New Roman]7-4 Insulati** resistance in M.OHMS between cores / screen[/F**T][/B]

[B][F**T=Times New Roman]7-5 Weight of copper per KM of cable[/F**T][/B]

[B][F**T=Times New Roman]7-6 Overall weight of cable per KM of cable[/F**T][/B]

[B][F**T=Times New Roman]7-7Overall diameter of finished cable in mm[/F**T][/B]

[B][F**T=Times New Roman]7-8 Type of chemical treatment against termite in the outer sheath.[/F**T][/B]

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[B]7-Tests[/B]

[B][F**T=Times New Roman]Cables and accessories shall be subjected to inspecti**s and tests by our inspectors or internati**al inspectors at any time during manufacture. The manufacturers shall provide inspecti** facilities for the said inspecti** shall be made at place of manufacture or at internati**al testing facilities. [/F**T][/B]

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[B]8- Cables ****ts and Terminati**:[/B]

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[B][F**T=Times New Roman]Cable ****ts and terminati**s to be slip ** or heat shrinkable type complete with all necessary ****ting materials suitable for 24 & 36 kv under-ground cable , The terminati**s and ****ts should be as follows :-[/F**T][/B]

[B][F**T=Times New Roman]6-1 Straight through ****t box for cable shown under 5.1.1 complete .[/F**T][/B]

[B][F**T=Times New Roman]6.2 Outdoor end boxes suitable for cable shown under 5.1.1 complete[/F**T][/B]

[B][F**T=Times New Roman]6-3 Indoor end boxes suitable for cable shown under 5.1.1 complete[/F**T][/B]

[B][F**T=Times New Roman]6-4 straight through ****t box suitable for cable shown under 5.1.2 complete[/F**T][/B]

[B][F**T=Times New Roman]6-5 Outdoor end boxes suitable for cable shown under 5.1.2 complete[/F**T][/B]

[B][F**T=Times New Roman]6-6 Indoor end boxes suitable for cable shown under 5.2.1 complete[/F**T][/B]

[B][F**T=Times New Roman]6-7 straight through ****t box suitable for cable shown under 5.2.1[/F**T][/B]

[B][F**T=Times New Roman]6-8 indoor end boxes suitable for cable shown under 5.2.1 complete[/F**T][/B]

[B][F**T=Times New Roman]6-9 Outdoor end boxes suitable for cable shown under 5.2.1[/F**T][/B]

[B][F**T=Times New Roman]6-10 indoor end boxes suitable for cable shown under 5.2.2[/F**T][/B]

[B][F**T=Times New Roman]6-11 indoor end boxes suitable for cable shown under 5.2.3[/F**T][/B]

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[B][F**T=Times New Roman] [/F**T][F**T=Times New Roman][/F**T][/B]

[B]N.B:-[/B]

[B][F**T=Times New Roman]The prices shall be based ** L.M.E. price for copper bar 1800 U.S.D/M.T. The formula f[/F**T][/F**T][/COLOR][/B]