In the world of power transmission, medium voltage cables connect infrastructure, enable energy flow, and support the reliability of entire networks. As the demands on these systems grow, Mixer S.p.A. has responded with a comprehensive and versatile range of compounds specifically designed for medium voltage applications, offering manufacturers a portfolio of solutions that combine performance, adaptability, and process efficiency.
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The cable industry evolves with new technologies, regulations, and the constant pursuit of better performance. Mixer’s approach to medium voltage insulation reflects this dynamic environment, by developing a portfolio of compounds that address a wide spectrum of technical needs. These materials are part of the EKOPREN® medium voltage family: crosslinkable rubber compounds engineered for insulation in cables rated from 6 to 95 kV, developed with several features and focused on diverse applications.
EKOPREN® compounds are based on EPR (Ethylene Propylene Rubber), EPDM (Ethylene Propylene Diene Monomer), and blends of EPDM and PE. The offer includes lead compounds as well as lead-free grades, offering RoHS compliant solutions. All the EKOPREN® compounds meet the specifications for 90°C and 105°C operating temperature for either single core or multicore cables and they are suitable for static and dynamic applications in extremely cold conditions, reaching as low as to -40°C. In particular, all the grades are compliant with national, international, and US standards like CEI 20-13, IEC 60502, and UL 1072, respectively.
Mixer’s development in medium voltage insulation is shaped by ongoing dialogue with cable manufacturers. Feedback from the field plays a central role in refining existing compounds and developing new ones. This collaborative mindset ensures that the company’s solutions are always grounded in the realities of production worldwide.
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The EKOPREN® range of products continues to evolve, with new grades introduced to meet emerging needs. Therefore, Mixer’s R&D department is continuously carrying out studies for diversifying the EKOPREN® compounds offering, driven by the commitment to its customers. Among them, the company is currently investigating new lead-free grades suitable for applications above 69 kV which will guarantee high electrical properties and resistance in both wet and dry conditions, fulfilling the increasing demand for environmental-friendly solutions.
