EoW September 2012

News Technology

Metal tape forming and welding line RN-W for MV, HV & EHV power cables

▲ ▲ Increased flexibility from Rosendahl

An advantage of this solution is the possibility to fulfil plenty of different demands (cable designs) with high productivity. In addition to this it is possible to have an “offline” or an “inline” (combination with the jacketing process) configuration. Metal tape forming with longitudinal welding gives cable designers and makers the possibility to serve solutions to the market, especially in the field of renewable power generation and transport. The target is to serve lighter cables, which fulfil all requirements and specifications. At the same time these cables offer increased flexibility and cross pressure resistance. In the field of land-cables Rosendahl's RN-W presents an innovative alternative to the commonly known “combined layer technology” where, for example, screen wires and tapes are used. Rosendahl Maschinen GmbH – Austria Website : www.rosendahlaustria.com

For many years it has been popular to shield MV, HV and EHV cables with lead or aluminium or with longitudinal applied glued Al/PE tapes. Based on the growing market demand for alternative solutions for these, Rosendahl Austria has entered this segment of power cable manufacturing equipment. Rosendahl’s metal tape forming and welding line RN-W gives the possibility to produce cables with better properties like increased mechanical stability, water and/ or gas tightness, high-pressure resistance, lower weights, smaller dimensions and short current resistance. At the same time this technology is more environmentally friendly and more flexible. The metal sheathing process starts with a tape out of copper, aluminium or stainless steel, which will be applied around a cable core. These tapes will be formed, longitudinal welded and sized. Depending on the requested product design a corrugation process can follow.

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September 2012

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