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56 Technic & Supportwww.leoni-communication-infrastructure.comDesign options/Construction details(according to EN 50288-7)Multi-Element Metallic Cables for Analogue and Digital Communication and Control SystemsConductor■■Copper, plain or tinned■■■■Conductor sizes: 0.5 mm² up to 2.5 mm²Conductor shape: solid, stranded or flexibleInsulation■■■■PVC, PE (solid and foam), XLPE, PP(solid and foam), zero halogen,flame-retardant compoundsAdditional materials under preparationCabling elementsCores, pairs, triples, quads■■Individual screen■■■■■■Plastic laminated metal foilwith drain wirePlain or coated metal braidCombination of a braid and a foilAssembling■■■■Directly or in units in concentric layersWith or without moisture barrierMoisture barriers■ ■ Dry ➔ swellable tapes, and/or cords,■■swellable powderWet ➔ petrojelly filling compoundDesign OptionsScreening ofcabling elementsTypeOptionsConductorInsulationTwistingof pairs, triplesand quadsAssembling ofcabling elements+ / 0 moisturebarriersScreeningof cable elementassemblyMulticoretypesConstruction DetailsReference StandardsConductor■■According to EN 60228, class 1, 2 or 5■■Max. conductor resistancefor multi-element cables (beside cores):Standard value + 2 %Insulation■■Acc. to EN 50290-2-21, 23, 25, 26 a. 29■■Concentricity of insulation: min. 75 %■■Min. insulation thickness depending onvoltage rating and conductor sizeCabling elements■■■■Max. length of lay:up to 1.5 mm² ≤ 100 mm2.5 mm² ≤ 150 mmIdentification: numbered cores or tapesor acc. to IEC 60189-2 or IEC 60708-1Individual screen■■Overlapping of the foil: min. 20 %■■Filling factor of the braid 0.6 and 0.3resp. when combined with a foilAssembling■■Wrappings of non hygroscopic tapesinterstitial fillers, where neccessaryMoisture barriers■■Petrojelly according to EN 50290-2-29Overall screen■■Overlapping of the foil min. 20 %■■Filling factor of the braid > 0.6 and > 0.3■■resp. when combined with a foilOne or both side laminated aluminum tapelongitudinally overlapped, bonded to the innersurface of an extruded sheath, thickness of alum.tape: min. 0.15 mm without coating