Low smoke halogen-free cross-linked power cable WDZ-YJY23-8.7 refers to the insulation layer material of the wire, which contains halogen substances. In the case of combustion, it does not release halogen containing gases and has a low smoke concentration. The reference standard is JB/T 10491-2004, and the models include WDZ-BYJ, WDZ-RYJ, etc. There are already a large number of manufacturers with production capacity.

characteristic:

Low smoke halogen-free wire

Low smoke: During combustion, there is only a faint mist of water, with a visible distance of over 60 meters

Flame retardant: achieving flame retardant effect on wires through irradiation crosslinking process

Long lifespan: anti-aging, with a lifespan of over 100 years

The working temperature can reach 150 degrees Celsius

The main characteristics of halogen-free, low smoke, flame-retardant wires and cables are that all materials do not contain halogens and release very little smoke during combustion. The toxicity released by halogenated cables in fire is very frightening. If the toxicity of the gas concentration that can cause death within 30 minutes is judged as 1, then the toxicity index of polyvinyl chloride is 15.01, while the toxicity index of halogen-free polymers is 0.79. During a fire, the strong and dense smoke makes it difficult for victims to distinguish their direction, thus prolonging their stay in the fire. According to relevant information, when the transmittance is 70%, the ability of human naked vision to distinguish objects is only about 5m. The light transmittance of the smoke emitted during the combustion of polyvinyl chloride is below 15%, which means that in this thick smoke, the naked visual distance of a person is only about 2 meters. Another characteristic of thick smoke is abnormal propagation with hot air flow, with a speed of over 20m/min. It can be seen that using halogen-free low smoke wires and cables is crucial.