How to Identify Low‑Smoke, Halogen‑Free Flame‑Retardant Cables
Category: Blog
Release time: 2023-06-28
Overview: Low‑smoke, halogen‑free, flame‑retardant cables serve as the medium for transmitting electricity in our daily lives and play a critically important role. Different types of low‑smoke, halogen‑free, flame‑retardant cables are used in various applications. As a special kind of low‑smoke, halogen‑free, flame‑retardant cable, most people are unaware of its unique features and functions. So, what exactly is a low‑smoke, halogen‑free, flame‑retardant cable, and how can you identify one?
Low‑smoke, halogen‑free, flame‑retardant cables serve as the medium for transmitting electricity in our daily lives and play a critically important role. Different types of low‑smoke, halogen‑free, flame‑retardant cables are used in various applications. As a special type of low‑smoke, halogen‑free, flame‑retardant cable, most people are unaware of its unique features and functions. So, what exactly is a low‑smoke, halogen‑free, flame‑retardant cable, and how can you identify one?
First: What is low‑smoke, halogen‑free, flame‑retardant cable?
As the name suggests, low smoke means that very little smoke is produced during combustion; no halogen means no release of harmful gases and provides flame retardancy—meaning that in the event of a fire, it can prevent or slow the spread of flames—and is often used in hospitals and other locations with stringent environmental requirements.
Second, how do you identify low-smoke, halogen-free flame‑retardant cables?
1: Product Name Identification Method
Wire – Low‑smoke, halogen‑free, flame‑retardant polyethylene‑insulated wire and cable; Cable – Low‑smoke, halogen‑free, flame‑retardant polyethylene‑insulated, low‑smoke, halogen‑free, flame‑retardant polyethylene‑sheathed power cable—often referred to by different names, such as polyethylene‑insulated low‑smoke, halogen‑free, flame‑retardant power cable.
2: Open-flame combustion method.
Under normal circumstances, it is not easy for a lighter to ignite the cable during grilling. After prolonged burning, the cable’s insulation layer remains relatively intact, with no smoke or irritating odor, while its diameter increases simultaneously. If the cable ignites easily, it can be confirmed that the cable’s insulation layer does not use halogen‑free, low‑smoke materials—likely polyethylene or polyvinyl chloride.
3: Water Soaking Method.
When the wire core or cable is immersed in 90°C hot water under normal conditions, the insulation resistance will remain within the standard range.
4: Density Comparison Method
The density comparison method is based on the density of water. Since halogen‑free, low‑smoke materials have a density higher than that of water, you can remove a small portion of the insulation layer and place it in water. If it floats on the surface of the water, then it is not a halogen‑free, low‑smoke material.
Third, what are the characteristics of low-smoke, halogen-free, flame‑retardant wires?
1: Compared with ordinary PVC wires, it has higher tensile strength.
2: Excellent weather resistance
3: The structure is relatively soft.
4: Relatively high volume resistivity
5: Good elasticity and good adhesion.
In short, when buying low-smoke halogen-free flame-retardant wires, you must clearly understand the identification method to ensure that you give yourself a better use environment.
Keywords: How to Identify Low‑Smoke, Halogen‑Free Flame‑Retardant Cables
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