What Is LSZH Wire?

Low-smoke halogen-free insulation cables and wires are confusing at first glance. How is low smoke a low method? What does halogen-free mean? What products are low-smoke halogen-free insulation cables and wires, and its advantages lie in Where? Where is the specific application.

Low-smoke halogen-free cable is the material of wire sheath in the cable industry. Low smoke means that the grommet emits a low concentration of smoke when it is heated; halogen-free means that no halogen-containing vapors are released during combustion.

Low-smoke halogen-free cables can only cause shallow fog when burning, and do not release hydrogen chloride or other alkalis, and the operating temperature can reach 150 °C

So what is halogen? Halogen is a group VIIA element in the chemical element table, including fluorine, chlorine, bromine, iodine, astatine, and Ishida.

In the event of fire, chlorine-containing plastic cable grommets will release toxic hydrogen chloride, and will produce sulfuric acid when exposed to water. Hydrogen chloride is a harmful and corrosive gas with a suffocating odor. It not only has a strong reaction to the respiratory tract and lungs, but also erodes the eyes, skin and mucous membranes. When hydrogen chloride meets water, it will cause sulfuric acid. Sulfuric acid has high corrosion and will also cause damage to staff and equipment.

Fire accidents occur in closed or poorly ventilated environments with general cables, which can easily affect people's life safety. Low-smoke halogen-free raw materials can reduce harmful and corrosive gases produced during combustion.

For safety reasons, low-smoke halogen-free wires are generally selected for wiring in densely populated or low-density sites, especially in environments with poor ventilation standards such as airports, high-speed rail carriages, and the internal structure of ships. Insulated cables and wires can reduce the harmful gas accumulated when the route is burned due to short circuit or fire damage, and maintenance workers and equipment are not easily exposed to harmful gases, ensuring life safety.

Such as radiation effect venues, thermal power stations, thermal power transformers, underground power distribution stations, underground bus stations, clean operation departments, purification workshops, hospitals, public libraries, large, medium and small shop business outlets, theaters, historical museums, high-rise buildings , cultural and educational engineering buildings, exhibition buildings and other venues also have clear fire protection design specifications that require the use of low-smoke halogen-free cables.