XDRCU-ALT Single-core Cable for 500/290 (550) kV with Copper wire screen and Aluminium laminated sheath Construction * Aluminium conductor, round stranded or segmented, optionally with longitudinal water barrier * Inner semi-conductive layer firmly bonded to the XLPE insulation * XLPE main insulation, cross-linked * Outer semi-conductive layer firmly bonded to the XLPE insulation * Copper wire screen with semi-conductive swelling tapes above and below as longitudinal water barrier * Aluminium foil, overlapped and glued as radial diffusion barrier bonded to the oversheath * Thermoplastic oversheath as mechanical protection, optionally with semi-conductive and/or flame-retardant layer Remarks The inner semi-conductive layer, the XLPE main insulation and the outer semi-conductive layer are extruded in a single operation applying a dry curing and a water or nitrogen cooling method. Features * Very low weight * Low losses * Low cost * Internationally proven design * Suitable for most applications Standards IEC 62067 Technical data 20170415-1 Subject to change without notice Calculation basis: Conductor temperature: 90°C, Frequency: 50 Hz, Laying depth: 1200 mm, Phase distance at flat formation: 30 cm, Earthing method: Single-Point Bonding or Cross-bonding