In the railway and construction industries, low smoke zero halogen (LSZH cable or LSOH cable) flame retardant cable is a very important material, especially in those environments with extremely high safety requirements. This type of cable is designed to reduce the amount of smoke generated when a fire occurs and avoid the release of harmful halogen gases. The following is a detailed introduction to LSZH flame retardant cable:
Features of low smoke zero halogen cables:
Low smoke characteristics: less smoke is generated during the combustion process, which helps to improve visibility and facilitate personnel evacuation.
Halogen-free characteristics: does not contain halogen elements such as chlorine, bromine, etc., and does not produce toxic and corrosive hydrogen halide gas during combustion, reducing the harm to human health and the impact on the environment.
Flame retardancy: has good flame retardant properties, can slow down the spread of flames, and reduce the risk of fire spread.
Environmental protection: the material can be recycled and meets environmental protection requirements.
Applications of low smoke zero halogen cables:
Commercial buildings: office buildings, shopping malls, hotels, etc.
Public facilities: hospitals, schools, airports, high-speed railways, subway stations, etc.
Industrial sites: chemical plants, nuclear power plants, data centers, etc.
Residential projects: high-end apartments, villas, etc.
Underground space: In underground facilities such as subways and tunnels, it is particularly important to use low-smoke halogen-free cables because the space is closed and ventilation conditions are limited.
High-rise buildings: In high-rise buildings, vertical passages such as elevator shafts and shafts are prone to become ways for smoke to spread during fires, so low-smoke halogen-free cables are needed.
Sensitive areas: Crowded places such as hospitals and schools, as well as equipment-sensitive areas such as data centers and laboratories, all require the use of such low-smoke halogen-free flame-retardant cables to reduce the risk of fire.
Low-smoke halogen-free cable construction materials:
Insulation layer: usually made of polyolefins (such as polyethylene PE), thermoplastic elastomers (TPE) or other special materials.
Sheath layer: LSZH materials such as polyolefin-based mixtures are used, which have good heat resistance and chemical stability.
Fillers and bindings: Non-halogen materials are also used.
Low smoke halogen-free cable test standards and certification:
International standards: IEC 60332-1/2/3 series are the main international standards for evaluating the flame retardant performance of cables.
Domestic standards: China has GB/T 19666-2005 “General Rules for Flame Retardant and Fire Resistant Wires and Cables” and other standards.
Other certifications: UL (Underwriters Laboratory), CE (European Conformity Assessment), BS (British Standard), etc.
Precautions for installing low smoke halogen-free cables:
Temperature limit: Make sure that the operating temperature of the cable does not exceed its design upper limit.
Bending radius: Follow the minimum bending radius recommended by the manufacturer to avoid damaging the cable.
Support system: Choose appropriate supports to ensure that the cable is installed firmly and is easy to maintain.
Related applications of low smoke halogen-free fireproof cables
Fireproof cables, as a special type of cable, are increasingly used in modern society. Not only can they play their unique advantages in daily work and life, but in recent years, they have been increasingly used in key and special places such as high-rise buildings, rail transit, airports, docks and subways. These places have extremely high requirements for the safety performance of cables, and fireproof cables are favored for their excellent fireproof performance.
In places with harsh environments such as nuclear power plants, chemical industries, and mines, the application of fireproof cables is even more indispensable. These places often have dangerous factors such as high temperature, high pressure, flammable and explosive, and ordinary cables are difficult to meet their safety requirements. Fireproof cables, with their excellent fireproof performance and stability, can operate stably in extreme environments to ensure the safety and reliability of the power system.
Compared with ordinary cables, fireproof cables have higher quality requirements and stricter production standards. Not only has it passed relevant professional assessments on fire resistance standards, it also has multiple functions such as waterproof and impact resistance. Its core advantage lies in its unique fireproof characteristics: even in the case of burning, fireproof cables will not short-circuit, and short-circuiting will not cause combustion. This feature is the key to the widespread use of fireproof cables in special places.
The fireproof characteristics of fireproof cables are produced and tested in strict accordance with relevant international standards to ensure that they can perform at their best during use. It is precisely with these advantages that fireproof cables play an increasingly important role in modern society, providing a solid guarantee for the safety of people’s lives and property.
Introduction to the relevant applications of low-smoke halogen-free flame-retardant fire-resistant power cables
Flame-retardant fire-resistant power cables, like the guardian of the city, guard our power safety. This cable has unique flame-retardant properties, just like a warrior in armor, facing high-temperature fire, it can still stick to its post and ensure the continuity and safety of power transmission.
Its flame-retardant properties come from its carefully designed material structure. The outer sheath of the cable is made of special flame-retardant materials. When encountering open flames, this material can quickly form a dense protective layer to isolate oxygen from flames, thereby effectively suppressing the spread of fire. At the same time, the conductor and insulation layer inside the cable have also been specially treated, so that even in high-temperature environments, they can still maintain stable electrical properties and ensure the normal transmission of electricity.
Flame-retardant fire-resistant power cables have a wide range of applications, from the power systems of high-rise buildings, to the power supply facilities of underground rail transit, to the power lines of industrial production. At these critical moments, it always stands up and protects people’s lives and property with its excellent flame retardant performance.
Not only that, flame retardant fire-resistant power cable also has good environmental performance. In the production process, it uses environmentally friendly materials to reduce pollution to the environment; in the use process, due to its flame retardant performance, it reduces the occurrence of fire accidents, thereby reducing damage to the environment.
Flame retardant fire-resistant power cable has become an indispensable and important part of the modern power system with its excellent flame retardant performance, wide range of applications and good environmental performance
Technical points of low smoke halogen-free cable
Fire resistance: In addition to flame retardant performance, cables are also required to have certain fire resistance in some cases, that is, they can still maintain the integrity of the circuit within a certain period of time.
Mechanical strength: The cable needs to have sufficient mechanical strength to withstand the stress of stretching, bending and other stresses during installation.
Electromagnetic compatibility: In some environments with severe electromagnetic interference, the cable also needs to have a good shielding effect to reduce signal interference.
Aging resistance: Cables exposed to harsh environments for a long time need to have good weather resistance and aging resistance.
Recommended selection of low-smoke halogen-free cables
Rated voltage 0.6/1kV and below metal sheathed inorganic mineral insulated cables
Rated voltage 0.6/1kV copper core plastic insulated prefabricated branch power cables
Rated voltage 0.6/1kV and below mica tape mineral insulated corrugated copper sheathed cables
Rated voltage 1kV and below optical fiber composite low-voltage cables
Future trends of low-smoke halogen-free cables
With the advancement of technology and the enhancement of environmental protection awareness, the development trends of low-smoke halogen-free flame-retardant cables include:
Higher performance: Develop new materials with higher flame retardant properties, lower smoke density, and longer service life.
Intelligent: Integrated sensor technology enables cables to have self-detection and early warning functions.
Sustainability: Use more renewable resources to manufacture cables and reduce environmental impact.
The application of low-smoke halogen-free flame-retardant cables in rail transit, construction, power generation, energy, and shipbuilding industries is a complex task that requires comprehensive consideration of multiple factors. From selecting the right cable type to ensuring proper installation and maintenance, every step is critical. By adopting high-quality cables and implementing strict management measures, the safety and reliability of buildings can be effectively improved. With the continuous advancement of new materials and technologies, future cable products will be more efficient, environmentally friendly and intelligent.
In industrial equipment, low smoke halogen-free flame retardant cables are key materials to ensure fire safety and environmental protection. TST CABLES low smoke halogen-free flame retardant cables are made of LSZH cable materials, which can significantly reduce smoke generation and avoid the release of harmful halogen gases when a fire occurs. Its flame retardant properties are superior and are suitable for a variety of environments such as rail transit, commercial buildings, public facilities and industrial sites. Low smoke halogen-free flame retardant cables meet strict international and national standards, providing a reliable solution for building design, ensuring personnel safety and environmental friendliness. We look forward to working with you to create a safer and more efficient future for rail transportation, making every trip a wonderful memory.
If you have a need for custom railway cables, further technical support or customized cable solutions, you can visit the TST CABLES official website or feel free to send an email to the professional cable engineer of TST cable manufacturer (email: lixiangchao@testeck.com, please state your country, your industry, and your needs in the email).
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