WCA September 2019

Technology news

Medium voltage insulation – the evolution

MIXER SpA is a compounder for medium voltage insulation, with a global presence. Since 1996, the company has prod- uced MV compounds based on EPDM and EPDM/PE blends.

The strategy is to offer innovative and comp- etitive materials to the cable market for new applications. An example of this is that ten years ago the company developed and promoted fully lead-free products, ahead of user demand. Constantly seeking innovation and committed to providing added value to customers, Mixer developed a new version of medium voltage insulation, enabling faster and easier production. In addition, it created cost-efficient grades for applications up to 20kV. Both those latest compounds and the standard ones are suitable for operating temperatures of 90°C and 105°C and are compliant to international standards. Furthermore, several types of semi-conductive shields were tested together with these grades for compatibility and peelability, to offer a full ready-to-go solution to clients. Two new blends were formulated, starting from the established Ekopren ® 3IS731. The first, Ekopren ® 3IS73F, was optimised for faster extrusion. Because of its decreased hardness, it avoids scorch issues and presents higher flexibility. The second, Ekopren ® 3IS73L, responds to the need for a voltage rating between 6 and 20kV, offering cost efficiency combined with easy processing. These improvements were also implemented on the lead-free compound Ekopren ® 3IS751, leading to the variants Ekopren ® 3IS75F and Ekopren ® 3IS75L. Merging the experience of Mixer in MV products with the specific needs of its customers, the company is now offering a wider portfolio for this market segment. The new grades enrich the selection of medium voltage insulation suitable for EPR and HEPR specifications, which can be harder or flexible, with or without lead and for operating voltage from 6kV to 95kV. Mixer SpA – Italy Website : www.mixercompounds.com ❍ The range of Ekopren blends

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Wire & Cable ASIA – September/October 2019