Ordinary wire and cable will release hydrogen halide or other acid gases when burned in heat, which has certain pollution, and the smoke generated will hinder the visibility of fire fighting and rescue. Low-smoke halogen-free cables solve this problem and can protect personnel and equipment from exposure to toxic and corrosive gases. What else are the differences between low-smoke halogen-free cables and ordinary wires? Let's learn more about it.

What is a low-smoke halogen-free cable

Low-smoke halogen-free cables referred to as LSZH, LSOH, LSOH, LSFH and OHLS are the material classification of wire sheaths in the wire and cable industry. Low smoke halogen-free wire sheath is composed of low smoke emission when heated, and does not contain halogen-free thermoplastic or thermosetting, which can reduce the toxic and corrosive gases generated during natural burning.

Second, performance characteristics

1. Halogen-free

The use of green environmental protection insulation layer, sheath and special oxygen insulation layer material, not only has good electrical properties, physical and mechanical properties, and to ensure that the product does not contain halogen, to solve the "secondary pollution" formed during combustion, to avoid the toxic substances generated when the traditional PVC wire burning.

2, low smoke and low toxicity

The use of new special coating materials that are pollution-free to the environment, the production, use process and natural combustion will not produce toxic gases, and the emission of acid gas is very small, reducing the damage to personnel and equipment. When special personnel are concentrated, it is very necessary to use low-smoke halogen-free cables.

3. Environmental protection

The insulation and sheath do not contain lead, cadmium and other heavy metals harmful to the human body, and will not pollute the soil and water source during the use and disposal of the cable, which is more environmentally friendly than the traditional cable. Low smoke halogen-free cable is also known as environmental protection cable, it can be seen that the environment is still very friendly.

4, high flame retardant

Environmental protection cables ensure that the building requirements for fire protection are high, the cable is not easy to burn in the case of fire, and can prevent the spread of flames and the expansion of disasters after combustion. In particular, the emergence of super high-rise buildings and modern material products in modern construction increases the difficulty of rescue when a fire occurs. The use of low-smoke halogen-free cables can increase the rescue time and reduce the harm of harmful gases to the human body.

Iii. Use

Low-smoke halogen-free cables are mainly used in the military, aerospace, railway and maritime fields. Cost-effective, low-smoke, halogen-free sheathing is often (and sometimes necessary) used in poorly ventilated areas such as aircraft, military vehicles, and ships. In addition, low-smoke halogen-free sheathing is also widely used in railway systems with high pressure or track signal lines in underground tunnels. By using low-smoke halogen-free sheathing in such areas, the potential for toxic gas buildup in the event of a cable fire can be reduced.

Iv. Specifications and models

WDZ-BYJ: resistance type polyethylene wire

WDZ-KYY: Flame retardant polyethylene control wire

WDZN-BYR: flame retardant polyvinyl chloride flexible wire

WDZ-YJFY: Resistive irradiated crosslinked polyethylene cable



Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable