EoW September 2012

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News
Technology
September 2012 31
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.
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:
Metal tape forming and
welding line RN-W for MV,
HV & EHV power cables
▲ ▲ Increased flexibility from Rosendahl