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For more demanding industrial settings.
The use of instrumentation cables for the transmission of analogue and digital signals is increasing. Protection against external influences is highly important in order to preserve the information transmitted.
In terms of industrial environments, these external influences can be particularly disruptive. There are numerous possible threats and they are more prevalent than in residential environments.
In this type of environment, it is possible to outline different types of aggressions such as chemical attacks, the possibility of fires, the penetration of moisture and water and electromagnetic interference (EMI).
Aggressions produced by chemical agents have an adverse effect on the cable’s materials, resulting in the deterioration and corrosion of the cable’s cover and subsequently of the insulation of the conductors, reducing or even stopping signal transmission.
These products, such as oils, hydrocarbons, solvents, acids, salts, bases and aggressive gases lead to a reduction of mechanical resistance, fragility or softening of materials and increased permeability.
In uses where the cables may be subject to attacks such as those mentioned, the external cable covering is insufficient, and therefore it is is necessary to use additional protection. The traditional solution for such cases was a lead cover.
Lead pollution is a matter of world importance. This substance is not only harmful for the environment, it also harms the health of people. Lead is one of the substances referred to in the European Union (EU) directive concerning the Restriction of hazardous substances in electrical and electronic equipment (RoHS). It is also a banned substance in many countries across the world.
SUMCAB has developed a new type of protection, for cables to be used for industrial applications, as an alternative to traditional constructions with lead covers. Sumcab’s S-BLOCK barrier performs in a very similar way to lead but offers several advantages:
SUMCAB TAILOR MADE CABLE (STMC), the new Sumcab group production centre aimed at the production of special cables, is responsible for the development of this new product.
S-Block is especially characterised by its additional layer of polyamide on a covering layer of high-density polyethylene (HDPE) thereby managing to create a magnificent solution for Oil & Gas uses. The three layers that form this barrier are:
1- Strip of copolymer/aluminium: impermeable against moisture and excellent protection against electromagnetic interference.
2- High-density polyethylene (HDPE): resistant to inorganic chemical products.
3- Polyamide: resistant to organic chemical products.
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