The sheaths of commonly seen wires and cables are usually made of polyethylene (PE), polyvinyl chloride (PVC), or thermoplastic polyurethane (TPU). If a fire occurs, chlorine-containing plastics can release toxic hydrogen chloride gas, which can form hydrochloric acid when it comes into contact with water, posing significant harm to the human body. In Low Smoke Zero Halogen (LSZH) cables, "Low Smoke" means they produce less smoke when burning compared to standard cables, and "Zero Halogen" means they do not release toxic halogen gases harmful to humans, greatly reducing potential injury.
LSZH cables are suitable for places that require halogen-free, low-smoke, and flame-retardant properties with high safety and environmental standards. These include high-rise buildings, railway stations, subways, airports, hospitals, large libraries, stadiums, villas, hotels, office buildings, schools, shopping malls, and other densely populated areas. Their use can help mitigate the adverse consequences of fires.
Utilizing environmentally friendly insulation, sheathing, and special oxygen barrier materials, LSZH cables not only exhibit good electrical and physical mechanical properties but are also guaranteed to be free of halogens. This solves the issue of "secondary pollution" during combustion and avoids the toxic substances produced when traditional PVC cables burn.
The insulation and sheathing do not contain heavy metals harmful to humans, such as lead or cadmium. The cables will not contaminate soil or water sources during use or disposal, making them more environmentally friendly compared to traditional cables.
Environmentally friendly cables are resistant to ignition and can prevent the spread of flames after combustion, thereby containing potential disasters. Especially in modern construction, which features super high-rise buildings and contemporary materials, fire rescue operations can be extremely challenging. Using LSZH cables can increase available rescue time and reduce exposure to harmful gases.
By employing new specialty sheathing materials that are non-polluting to the environment, LSZH cables do not generate toxic gases during production, use, or combustion. They emit minimal acidic gases, reducing harm to personnel and damage to equipment. The use of LSZH cables is particularly necessary in densely populated areas.
Of course, while LSZH cables offer numerous advantages over standard cables, they also come at a higher cost. However, even beyond locations where their use is mandated, opting for LSZH cables in residential homes is advisable when conditions allow. The LSZH cables produced by Henan Shenghua Cable Group fully comply with national standards and can be purchased with confidence.
