RENSEIGNEMENTS TECHNICAL TECHNIQUES …

1 01 TECHNICALINFOAMATIONSCHOOSING CABLE1) DefinitionThe nominal voltage of a conduc-tor or a cable is the voltage forwhich it has been is expressed in volts or kV with inform of Uo / that :Uo = is the effective value betweenthe core of an insulated conductorand is the effective value betweenthe cores of two phase Low voltage (LV) :The nominal voltage of the cablemust be equal at least to the nominalvoltage of the installation :- 300/300 Vcorr esponding to cablesreference 300/500 V corresponding to cablesreference 450/750 Vcorr esponding to cablesreference 07- 06/1 kV corresponding to cablesreference Medium voltage :The specified voltage, for whichthe cable is conceived, is expressedby three values in kVwhich are Uo/U(Um) knowing that :RENSEIGNEMENTSTECHNIQUESCHOIX D UN CABLE 1) D finition :La tension nominale d un conducteurou d un cable est la tension pour laquel-le il est pr est exprim e en volts ou kV sousla forme Uo / U avec :Uo = est la valeur efficace entre l med un conducteur isol et la est la valeur efficace entre les mes conductrices de deux conducteursde Basse tension (BT) :La tension nominale du c ble doit tre au moins gale la tension nomi-nale de l installation :-300/300 V correspondant aux c blesde r f rence 300/500 Vcorrespondant aux c blesde r f rence 05- 450/750 V correspondant aux c blesde r f rence kV correspondant aux c bles der f rence - Moyenne tension :La tension sp cifi e, pour laquelle unc ble est con u, s exprime par unensemble02 Chute de tension en V/A/kmC bles basse tension isol s PE ou PVC(Temp rature maxi : 70 C)3 et 4 conducteursVoltage drop in V/A/kmLow voltage cables insulated with PE or PVC(Max temperature.

2 70 C)3 and 4 conductorsCuivreCopperAluminiumAluminium Cos SectionCross-section(mm2)Cos ,la section (Sc) corresponding cross section (Sc)is looked up in the tables de tension en V/A/kmC bles basse tension isol s PE ou PR(Temp rature maxi : 85 C)3 et 4 conducteursVoltage drop in V/A/kmLow voltage cables insulated with PE or xlpe (Max temperature : 85 C)3 and 4 conductorsCuivreCopperAluminiumAluminium Cos SectionCross-section(mm2)Cos cas d utilisation du courant mono-phas , ces valeurs doivent tre multipli espar 1, case of use of single phase current,these values should be multiplied by1, ,50,80,750,9811,131,51,382,51,7842,2562, 7636-24,5-18,1-12,1018,107,4112,104,617, 413,084,61 Section nominaleNominal cross section(mm2)Diam tre approximatifde l me circulaireApproximate diameter ofthe circular core(mm)R sistance lin ique maximale de l me 20 CMaximum lineic resistance of the core at 20 C( / km)Ame cuivre nu de sectioncirculaireBare copper core with circularcross sectionAme Aluminium de sectioncirculaireAluminium core with circularcross sectionSeuls sont garantis la r sistancelin ique maximale et le nombre minide brins, qui sont fix s par la norme CEI 60 the max.

3 Lineic resistance andthe min. number of wires are guaran-teed, which are fixed by the standard IEC 60 UTILISESEN CABLERIEMATERIAL USED FORCABLES1) M tauxLes m taux utilis s dans les c bles lectriques sont :- Le cuivre lectrolytique utilis pour :* cuivre recuit nu* cuivre recuit tam * cuivre dur- L aluminium 3/4 dur- L alliage d aluminium de magn -sium et de silicium (ALMELEC)- L acier sous forme de feuillard oufils pour la protection m canique desc ) MetalsThe metals used for electric cablesare :- The electrolytic copper used for :* Annealing bare copper* Annealing tinned copper* Hard copper- 3/4 hard aluminium- The alloy of aluminium, magnesiumand silicium (ALMELEC)- The steel in form of tapes or wiresfor mechanical protection of - Caract ristiques des mes :CLASSE 1(Ame massive) - Cores characteristics :CLASS 1(Massive core)05 Ame circulaire non r treinteNon compacted circular coreAme circulaire r treinteCompacted circular coreAme sectoraleSectoralcoreR sistancelin l me 20 CMaxi ofcore at 20 CSectionnominalenominalcrosssection(mm2) Nombreminimal de wiresDiam treDiametre(mm)Nombre minimal debrinsMin.

4 Numberof wires Diam treDiametre(mm)Nombre minimal debrinsMin. numberof wires (Ohm/km)0,50,7511,52, ,91,121,291,502,012,553,124,055,106,427, 568,910,712,614,315,817,720,322,725,728, 831,566666666612151818303434535353666612 1515153030305353534,65,66,67,79,31112,51 3,915,517,82022,925,729,35,26,57,58,610, 21213,51516,819,221,624,627,631,5 CuAl ,518,112,17,414,613,081,831,150,7270,524 0,3870,2680,1930,1530,1240,09910,07540,0 6010,04700,03660,02831,200,8680,6410,443 0,3200,2530,2060,1640,1250,1000,07880,06 050,0469 CLASSE 2 (Ame c bl e rigide)CLASS 2 (Rigid stranded core)Seuls sont garantis la r sistancelin ique maximale et le nombre minide brins, qui sont fix s par la norme CEI 60 the max. lineic resistance andthe min. number of wires are guaran-teed, which are fixed by the standard IEC 60 ,9106 CLASSE 5 (Ame souple)CLASS 5 (Flexible core)Section nominalenominalcross sectionDiam tre brins de l meMax. diameter ofthe core wiresDiam tre approxi-matif de l meApproximate dia-meter of the coreR sistance lin ique maximale de l me 20 CMaximum lineic resistance of core at 20 CAme cuivre tam Tinned copper coreAme cuivre nuBare copper coremm2mmmmOhm/kmOhm/km0,50,210,940,139, 00,750,211,126,726,010,211,320,019,51,50 ,261,613,713,32,50,262,08,217,9840,312,6 5,094,9560,313,13,393,30100,414,11,951,9 1160,415,61,241,21250,417,00,7950,780350 ,418,30,5650,554500,419,90,3930,386700,5 111,60,2770,272950,5113,60,2100,2061200, 5115,50,1640,1611500,5117,30,1320,129185 0,5119,10,1080,1062400,5121,80,08170,080 13000,5124,40,06540,06414000,5128,00,049 50,04865000,6131,50,03910,0384 Seuls sont garantis la r sistancelin ique maximale et le diam tre debrins qui sont fix s par la norme CEI 60 the max.

5 Lineic resistance andthe max. diameter of wires are gua-ranteed, which are fixed by the stan-dard IEC 60 228 .07 CLASSE 6 (Ame Extra souple)CLASS 6 (Extra Flexible core)Section nominalenominalcross sectionDiam tre brins de l meMax. diameter ofthe core wiresDiam tre approxi-matif de l meApproximate dia-meter of the coreR sistance lin ique maximale de l me 20 CMaximum lineic resistance of core at 20 CAme cuivre tam Tinned copper coreAme cuivre nuBare copper coremm2mmmmOhm/kmOhm/km0,50,161,140,139, 00,750,161,326,726,010,161,520,019,51,50 ,161,813,713,32,50,162,38,217,9840,162,9 5,094,9560,213,43,393,30100,214,81,951,9 1160,215,91,241,21250,217,00,7950,780350 ,218,30,5650,554500,319,90,3930,386700,3 111,60,2770,272950,3113,60,2100,2061200, 3115,50,1640,1611500,3117,30,1320,129185 0,4119,10,1080,1062400,4121,80,08170,080 13000,4124,40,06540,0641 Seuls sont garantis la r sistancelin ique maximale et le diam tre debrins qui sont fix s par la norme CEI 60 the max.

6 Lineic resistance andthe max. diameter of wires are gua-ranteed, which are fixed by the stan-dard IEC 60 ) - Temperatures d emploiVoir tableau des temp ratures enfonction de la nature de l isolant(Page 25) - Propri t sa - Polychlorure de vinyle :Il s agit d un m lange de r sine,(polychlorure de vinyle pure), de plas-tifiant, de charges et de * Bonnes propri t s m caniques* Rigidit di lectrique l v e* Inertie chimique vis vis des produits usuels* Non propagation de la flamme* Non propagation de l incendieavec m lange appropri * Facilement colorableInconv nients* R sistivit lectrique faible* Fragilit aux basses temp ratures* D gagement de gaz corrosifs et defum es opaques en cas d incendie* Faible r sistance aux hydrocarbures aromatiquesb - Poly thyl ne r ticul (PR)La r ticulation du poly thyl neconduit des mat riaux particuli re-ment adapt s aux ) - Temperature of useSee the table of temperatures accor-dings to the nature of the insulating(Page 25) - Characteristicsa - Polyvinyle chloride.

7 It s a compound of resin, (purePolyvinyle chloride), plasticizer, fillerand * Good mechanical properties* High dielectric rigidity* Chemical inertia in front to usual products in commun use* Flame non propagation* Fire non propagation with appropriate compounds* Easily colourableDisadvantages* Weak electric resistivity* Fragility to low temperatures* Emission of corrosive gas andopaque smokes in case of fire* Weak resistance to aromatic - Crosslinked polyethylene ( xlpe )The Crosslinking of polyethyleneleads to materials particularly adap-ted to * Very satisfactory thermomechani-cal properties when heated* Good behaviour in cold* Chemical inertia : excellent resis-tance to ozone, acids and bases* Good resistance to abrasion* High electric insulationDisadvantages* Stiffness that may reduce the usefor flexible cables* Bad behaviour with flame* Sensitiveness to hydrocarbursc - Low density polyethylene (LDPE)Advantages* Lightness* Small dielectric losses* High resistivity* Big chemical inertia* Colourable in bright colours* Good behaviour with coldDisadvantages* Burns as a candle* Risk of flame propagation* Relatively low fusion point 105 Cd - High density polyethylene(HDPE)Advantages* LightnessAvantages* Propri t s thermom caniques chaudtr s satisfaisantes* Bonne tenue froid* Inertie chimique.

8 Excellente r sistan-ce l ozone, aux acides et aux bases* Bonne r sistance l abrasion* Isolement lectrique lev Inconv nients* Raideur susceptible de limiter l em-ploi en c ble souple* Mauvaise tenue la flamme* Sensibilit aux hydrocarburesc - Le poly thyl ne basse densit (PEBD)Avantages* L g ret * Faibles pertes di lectriques* R sistivit lev e* Grande inertie chimique* Colorable en teintes vives* Bonne tenue au froidInconv nients* Br le en coulant comme une bougie* Risques de propagation de la flamme* Point de fusion relativement bas 105 Cd - le poly thyl ne haute densit (PEHD)Avantages* L g ret 10* Faibles pertes di lectiques* R sistivit lev e* Grande inertie chimique* Colorable en teintes vives* Point de fusion lev (130 C)* Meilleure tenue aux courts circuits* Meilleure conductibilit thermique* Temp rature de fonctionnement lev e(80 C)* Small dielectric losses* High resistivity* Big chemical inertia* Colourable in bright colours* High fusion point (130 C)* Better thermal behaviour to short-circuits* Better thermal conducting* High functioning temperature(80 C)Inconv nients* Br le en coulant comme une bougie* Raideur par rapport au PEBDD isadvantages* Burns as a candle* Stiffness in comparison with LDPE3) Comportement au feu des c - C bles cat gorie C2 dites nepropageant pas la flamme Un c ble est dit ne propageant pasla flamme si, pris isol ment etenflamm , il ne propage pas la flam-me et s teint de lui m propri t correspond l essaiN 1 de la norme NFC 32-070 ou CEI60 )

9 Cables behaviour with a - Cable of category C2 called notflame propagating A cable is called not flame propa-gating , if taken away does not propa-gate the flame and set on fire extin-guishes propriety corresponds to the testcontrol N 1 of the standard NFC 32-070 or IEC 60 - C ble cat gorie C1 dits ne pro-pageant pas l incendie Un c ble est dit ne propageant pasl incendie si, en flamme, il ne d ga-ge pas de produit volatils inflam-mables en quantit s suffisante pourdonner naissance un foyer d incen-die qui correspond l essai N 2 de lanorme NFC - Cable of category C1 called notfire propagating A cable is called not fire propaga-ting when, burning, it does not giveinflammable volatile products thatmay generate a second corresponds to the test controlN 2 of the standard NFC - C ble cat gorie CR1 dits r sistantau feu Un c ble est dit r sistant au feu s il nepropage pas la flamme et si, plac aucoeur d un foyer d incendie, il continu assurer son service pendant un tepmslimit.

10 Les essais de qualification sont sui-vant les normes CEI 60-331 et NFC - Cable of catgory CR1 called resistant to fire A cable is called resistant to fire whenit does not propagate the flame and if pla-ced inside a fire, it keeps on servingduring a while. The qualification tests arethese of IEC 60 331 and NFC ,6/6 et 6/6 7,21,8/3 et 3/3 3,6Uo / U(kV)Um(kV)Tension sp cifi e Uo / U (Um)specified voltage Tension nominale entrephases du r seau (kV)Nominal voltage betweenthe net phases (kV)de trois valeurs en kV, sous la formeUo/U (Um) avec :Uo = Tension entre l me d unconducteur et un potentiel de r f ren-ce ( cran ou terre).U = Tension entre les mes de deuxconducteurs de phase (tension compo-s e).Um = Tension maximale qui peutappara tre entre les phases du r seaudans les conditions normales d = Voltage between the conductorcore and a reference potential (screenand earth).U = Voltage between the cores of twophase conductors (compound voltage).