High-quality industrial extrusion screw with precision design for efficient plastics processing and manufacturing processes.

horizontal line for both XLPE and PP insulation

Extrusion technology for medium voltage cable production up to 18/30 (36) kV

Extrusion technology
for medium-voltage power cables of up to 18/30 (36) kV

Polypropylene and XLPE: Get a space- and energy-saving production concept for medium voltage cables from one source​

The compact triple-layer insulation line processes the inner semiconductive, insulation, and outer semiconductive layers in a single process. The line is suitable for both PP and XLPE.

In-depth process
know-how

With our comprehensive expertise, we support customers in both XLPE extrusion on horizontal lines and the transition to energy-efficient polypropylene solutions.

Polypropylene on the rise

Having invested in polypropylene insulation technology since 2018, we can help you evaluate the transition from XLPE to PP based on real-world production experience.

your setup to save energy

RoSET - the all-in-1 polypropylene technology package

RoSET is our polypropylene (PP)-based material-and-machinery package for medium-voltage cable insulation. By eliminating energy-intensive cross-linking, RoSET simplifies the entire insulation process, reducing energy consumption, operational overhead, and process complexity.

The result is a leaner, more efficient production system that delivers the same—or even better—cable performance compared to conventional XLPE insulation. Designed for manufacturers seeking higher efficiency and lower operating costs, RoSET represents a smarter approach to MV cable insulation.

Thomas Kulmer

your specialist for medium-voltage cable production machinery

Your advantages with RoSET

The RoSET material-and-machinery package simplifies the entire production process and leads to several advantages for medium-voltage cable manufacturers.

Lower investment costs

Significant energy- and scrap-savings

Higher extruder speeds

Excellent electrical behavior

Small line footprint

Easier operation, maintenance & service

economic extrusion line with a small footprint

The RM-A power cable insulation line is an economic solution to produce a large product range in a small footprint. It stands out due to its flexibility, high productivity, and excellent product quality.

  • Tight tolerance and stable process control
  • Smooth production with low scrap rate
  • Large product range with various polymers
  • Half the space required compared to a high-end CCV extrusion line
  • Short down-times and change-overs due to easy line handling
  • Suitable for both XLPE and PP insulation

technical data

RM-A horizontal extrusion line:
one solution for both PP and XLPE medium-voltage cables

The same production line gives you the flexibility to produce medium-voltage cables with either PP or XLPE insulation. You can adapt to different material requirements and market needs without investing in separate production lines.

RoSET / Polypropylene XLPE
Cable standard IEC 60502-2* IEC 60502-2
Cross section of the conductor 50 – 800 mm² 50 – 800 mm²
Insulation material RoSET PPC material
(or any PP compounds available on the free market)
Borealis LE4421M + LE4431M

Tailor-made in Europe

according to your individual requirements

FAQ

Yes. PP-based medium-voltage cable systems have been in field operation since 2006. More than 10,000 km of medium-voltage cable cores have been produced and the technology has successfully completed IEC type testing and utility qualification programs.

PP systems can operate continuously at up to 110 °C compared with 90 °C for conventional XLPE. This allows higher utilization of existing cable routes and may increase usable network capacity.

Available test data show that modern PP cable systems successfully pass short-circuit tests and meet the relevant requirements for medium-voltage networks.

Studies indicate that modern PP insulation systems achieve at least XLPE-equivalent water tree performance and, in some cases, improved resistance.

Yes. PP is a thermoplastic material and can be reprocessed more easily than crosslinked XLPE, supporting circular economy objectives.

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Are you looking into ways to make your power cable production more efficient? Do you plan on entering a new market or boosting your competitive position? Get in touch. We will be happy to go into more detail about our machines and solutions in a personal meeting.

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