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RENEWABLE energy is booming. Not
only single households, but more and
more companies are also changing
their power supply sources. Solar
energy is one of the sources that is
transmitted through solar cables, and
these have special properties to fulfil
environmental requirements: they need
to be UV resistant, weather resistant
and mechanically resistant, as well as
offering electrical properties with an
ideal lifetime of more than 25 years.
RosendahlNextrom delivers extrusion
technology for the production of
single- and multi-core solar cables.
The process covers insulation and
jacketing in one production step on
two extruders of a similar size. An
optional stripe extruder can be
included in the extruder group.
The latest standard, TÜV2Pfg-
1169/08.07, also allows the process to
run co-extrusion (dual-layer extrusion
with one crosshead).
Some advantages with Rosendahl
co-extrusion are:
• Thinner walls on solar cables
• Higher production speeds
• Easy operation, as it is only one
extruder group
• Lower investment costs
• Shorter line length
The extrusion process calls for intense
product know-how. The material is
typically a polyolefin copolymer which
is then crosslinked using either an
electron beam or the Sioplas method
to achieve the desired product quality.
These two methods help the material
attain a rigid molecular structure for
chemical resistance and mechanical
flexibility. The material characteristics
can be tailored to suit custom needs.
RosendahlNextrom GmbH – Austria
Website
:
www.rosendahlnextrom.com❍
Solar cable co-extrusion from RosendahlNextrom
Cables to meet stringent solar requirements