In fire accidents, dense smoke and toxic gases often become fatal threats. Traditional
cables release halogen gases when burning, which not only hinders escape but also
corrodes equipment, exacerbating the disaster. Low Smoke Halogen-Free (LSZH) cables
have emerged as a solution, becoming a core choice for modern buildings and industrial
facilities due to their superior safety and environmental characteristics.
I. Core Advantages: A Dual Innovation in Safety and Environmental Protection
1. Low Smoke Characteristics: Improving Escape and Rescue Efficiency
Extremely low smoke density: When burning, it only produces a light, watery mist-like
smoke, with a smoke transmittance of up to 60%-70%, significantly better than the
10%-20% of traditional PVC cables. This characteristic ensures clear visibility for personnel
during a fire, preventing suffocation or disorientation caused by dense smoke.
2. Halogen-Free and Environmentally Friendly: Eliminating Secondary Damage
No toxic gas release: It does not contain halogen elements such as chlorine and bromine,
and only releases water vapor and a small amount of carbon dioxide when burning,
avoiding the production of highly corrosive gases such as hydrogen chloride and dioxins,
protecting the respiratory system and reducing equipment corrosion.
3.Flame Retardant Performance: Containing Fire Spread
Efficient flame retardant mechanism: Through irradiation cross-linking process or metal
hydroxide flame retardants, it achieves self-extinguishing of flames, with a low peak heat
release rate, effectively delaying the spread of fire and providing a critical window for
rescue.
International standard certification: Complies with standards such as IEC 60332-1-2
(single cable burning) and IEC 61034-2 (smoke density), ensuring that time is gained
for personnel evacuation and equipment protection in the early stages of a fire.
II. Application Scenarios: From Public Safety to Industrial Upgrading
1.Public Buildings: The Preferred Choice for Densely Populated Areas
Hospitals and schools: Ensuring unobstructed escape routes and preventing toxic smoke
from harming patients and students.
Airports and shopping malls: Meeting high safety requirements and reducing the impact of
fires on large crowds. 1. In airport terminals, low-smoke characteristics help passengers
quickly locate exits in smoky conditions, improving emergency response efficiency.
2. Industry and Transportation: A Reliable Choice in Harsh Environments
Chemical Plants and Petroleum Facilities: In flammable and explosive environments,
flame-retardant properties prevent equipment corrosion and secondary disasters.
Subways and High-Speed Rail: In enclosed spaces, low-smoke characteristics ensure
passengers maintain clear visibility during fires, allowing for rapid evacuation. In subway
tunnels, the corrosion resistance of the cables adapts to humid environments, reducing
maintenance frequency.
3. Data Centers and New Energy: Guardians of Precision Equipment
Server Rooms: Prevents corrosive gases from damaging expensive equipment while
meeting high fire safety standards. In data centers, the electrical stability of LSZH cables
ensures uninterrupted server operation and prevents data loss.
Photovoltaic Power Plants: Adapts to complex environments, supporting the sustainable
development of green energy. In outdoor photovoltaic arrays, the weather resistance of
the cables withstands UV radiation and temperature changes, extending system lifespan.
Conclusion
Low-smoke, halogen-free cables are not only a product of technological advancement but
also a concentrated reflection of society's demands for safety and environmental
protection.From urban infrastructure to industrial upgrading, their application scenarios
will continue to expand, providing a solid guarantee for modern life and industrial
development.
