Tables / Explanations AWG-Sizes - Prysmian Group

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TABLES / EXPLANATIONS <strong>AWG</strong>-SIZESconsequent interference must be taken into account.In order to counteract this interference, specialmeasures are required for the power cables. Asa result of an optimized design regarding shield,materials and geometry, this cable type fulfillsall the requirements with respect to mechanicalcharacteristics for flexible cables for festoon systemand cable tender operation and is also distinguishedby superior shield characteristics. Consequentlyinterference emission is reduced to an acceptabledegree or even completely suppressed.Moreover, the overall sreened CORDAFLEX(K) cabledesign helps manufacturers and operators of electricalin stallations to maintain the limit values specified inthe EMC legislation. PROTOLON H.V. reeling cablesand CORDAFLEX (from 35 mm2 conductor crosssection)are also eminently suitable as EMC cables asa result of their precise and symmetrical three-coredesign.Control cables, data transmission andbus cables (e.g. PROFIBUS)Interference-free data transmission can only beachieved, especially when power and data transmissioncables lie close together, by implementation ofspecial measures. Cable designs with twisted andshiel ded pairs have proven their suitability for suchapplications, in particular as bus cables. The laid-uplength and the shield are matched so that the transferimpedance and the shield attenuation are optimizedat 30 MHz. The following cable designs are eminentlysuitable for use as data and bus cables:>>>CORDAFLEX with 3, 6, 9 or 12 twisted andshielded pairsCORDAFLEX with combined pairs / singlecoresPLANOFLEX with 4 or 6 twisted and shieldedpairsTable 4/10 shows the specific characteristics of cranecables with twisted and shielded pairs ...x(2x#16)Cas a function of the frequency.Cables with fibre-opticsThe optimum solution as regards EMC is the useof glass fibre-optics. In addition to the well-knowndesign OPTOFLEX, we are in a position to offer allthe types of cables manufactured by us as combinedcopper / fibre-optic cables to special order. Pricesand delivery times are available on request. In mostcases, the overall diameter of the combined cables isidentical to that of pure copper cables. Attention isdrawn here, in particular, to the PROTOLON designwith integrated fibre-optics, which has formed partof our standard delivery program since 1984.Standards and regulations relevant toEMC of cables> IEC 801-3 This standard defines electromagneticcompatibility for instrumentationand control equipment for industrial processapplications. It describes methods for evaluationof the susceptibility to electromagneticinterference. It further describes tests, bymeans of which the influence of electromagneticinterference from external sources onthe operational behaviour of cables and theirmaximum achievable transmission rates canbe determined.>>>>IEC 801-4 Tests based on this standard revealthe maximum loading limits of LAN cablesas a result of uniform, random and periodicinterference.EN 55011 (DIN VDE 0875, Part 11) Inthis standard the limit values and measuringprocedures for radio frequency interferencecaused by industrial, scientific and medicalhigh-frequency equipment (ISM devices) aredefined.EN 55022 This standard corresponds to DINVDE 0878, Part 3: Limit values and measuringprocedures for radio frequency interferencecaused by information processing equipment(ITE). The radiated energy of a cable can bemeasured in simulated operation. In addition,the limit value classes A and B for radio frequencyinterference voltages are defined.Official Journal Regulation 243/1991 Thisregulation of the German Federal Ministry forPost and Telecommunication deals with radiofrequency interference and interference voltageemission.Information on this subject is also to be found inFTZ TL-6145-3000 issued by the Research andTechnology Centre of the German Post Office.Fig. 4/1
Electrical parametersConstruction Shield EMC evaluation EMCSymmetrical3 + 3Cu braid(possibly with Cu fleece)OptimumpowercablesSymmetrical3-coreCu braid(single core)GoodUnsymmetrical4-coreCu braid(possibly with Cu fleece)GoodSymmetrical3 + 3- SatisfactoryUnsymmetrical4-core- MediocreUnsymmetricalparallel cores or flatcableCu braidMediocreUnsymmetricalparallel cores or flatcable- PoorSymmetrical2-coreCu braid(possibly with Cu fleece)OptimumEMCcontrolcablesSymmetrical2-core- Very goodSymmetrical4-core- Good(with symmetricaloperation)Unsymmetricalconcentrically strandedCu braidoverall shieldOften adequate(with adjacent cores)Unsymmetricalconcentrically strandedCu braidindividually shieldedcoresOften adequate(with adjacent cores)Unsymmetricalconcentrically stranded- PoorFig. 4/2
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Page 19 and 20: Thermal parametersThe different tem
Page 21 and 22: Maximum tensile loadFlexible cables
Page 23 and 24: Travel speedsFlexible electric cabl
Page 25 and 26: Chemical parametersResistance to ch
Page 27 and 28: ConductorsConductors for flexible e
Page 29 and 30: The strands of the flexible conduct
Page 31 and 32: ShieldThe shield is a „protection
Page 33 and 34: Colour designation of the fibre-opt
Page 35 and 36: Anti-torsion braidSupport elementsF

Tables / Explanations AWG-Sizes - Prysmian Group

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