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Low smoke zero halogen wire
Low Smoke Zero Halogen (LSZH) cables, also known as ZHLS, 0HLS, or halogen-free flame retardant (HFFR) cables, are specifically engineered for applications where the emission of smoke and toxic fumes during a fire could pose a significant risk to human health and sensitive equipment. These cables are characterized by their flame retardant properties, making them an ideal choice for environments that require enhanced safety measures, such as public areas, transportation vehicles like cars, aircraft, railway carriages, and ships, as well as in tunnels and underground rail networks.
The core advantage of LSZH cables is their composition, which does not contain halogens such as fluorine, chlorine, bromine, iodine, or astatine. As a result, they do not emit toxic or corrosive fumes and produce minimal smoke when exposed to fire. This feature is crucial in ensuring that in the event of a fire, visibility is maintained, and the risk of exposure to toxic gases is significantly reduced, thereby improving the chances of safe evacuation and minimizing damage to equipment.
LSZH cables are also compliant with various international standards, including BS EN/IEC 60332-1-2 for flame retardancy and IEC/EN 60754-1/2, IEC/EN 61034-1/2 for low smoke halogen-free properties. These standards ensure that the cables meet specific requirements for the production of smoke and the emission of toxic gases in the event of a fire.
In terms of construction, LSZH cables typically feature a copper conductor, cross-linked polyethylene (XLPE) insulation, and a sheath made from LSZH compound. The sheath not only provides protection against external damages but also contributes to the cable's fire-resistant characteristics. The cables are designed to restrict the spread of flames and smoke, making them suitable for use in installations where fire safety is a paramount concern.
Overall, the Low Smoke Zero Halogen cable is an essential component in modern cable management, offering a high level of safety by reducing the risk associated with smoke and toxic fumes during a fire, while also meeting stringent international standards for flame retardancy and low emission of toxic gases.
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